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Aser García-Rodríguez
NEIKER-Basque Institute for Agricultural Research and Development, Basque Research and Technology Alliance (BRTA), Campus Agroalimentario de Arkaute s/n, 01192 Arkaute, Spain

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Feed

Journal article
Published: 30 August 2021 in Animals
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The aim of this trial was to assess the effect of feeding a concentrate including cold-pressed rapeseed cake (CPRC) on productive performance, milk quality and its sensory properties, ruminal biohydrogenation, and bacterial communities. Eighteen cows were paired, and two experimental diets (control vs. CPRC) were distributed within the pair. Concentrates were iso-energetic and iso-proteic and contained similar amounts of fat. The average days in milk, milk yield, and body weight of the animals were (mean ± SD) 172 ± 112 d, 585 ± 26 kg, and 25.4 ± 6.2 kg/d, respectively. The experiment lasted for 10 wk. Feeding CPRC resulted in lower ruminal saturated (p < 0.001) and higher monounsaturated (p = 0.002) fatty acids. Feeding CPRC increased Ruminococcus, Prevotella, and Entodinium but decreased Blautia; p-75-a5; undefined genera within orders Clostridiaceae and RF39 and within families Christensenellaceae, Lachnospiracease, and Ruminococcaceae; and fungi from the phylum neocallimastigomycota. The milk fatty acid profile was characterized by a lower n6:n3 ratio (p = 0.028). Feeding CPRC did not affect the milk yield, milk quality, or fat corrected milk (p > 0.05). Feeding CPRC improved the overall milk acceptability (p = 0.047). In conclusion, CPRC affected some microbial taxa, modified the biohydrogenation process, and improved the milk fatty acid profile and consumer acceptance without detrimental effects on milk production and composition.

ACS Style

Idoia Goiri; Izaro Zubiria; Jose Luís Lavín; Hanen Benhissi; Raquel Atxaerandio; Roberto Ruiz; Nerea Mandaluniz; Aser García-Rodríguez. Evaluating the Inclusion of Cold-Pressed Rapeseed Cake in the Concentrate for Dairy Cows upon Ruminal Biohydrogenation Process, Ruminal Microbial Community and Milk Production and Acceptability. Animals 2021, 11, 2553 .

AMA Style

Idoia Goiri, Izaro Zubiria, Jose Luís Lavín, Hanen Benhissi, Raquel Atxaerandio, Roberto Ruiz, Nerea Mandaluniz, Aser García-Rodríguez. Evaluating the Inclusion of Cold-Pressed Rapeseed Cake in the Concentrate for Dairy Cows upon Ruminal Biohydrogenation Process, Ruminal Microbial Community and Milk Production and Acceptability. Animals. 2021; 11 (9):2553.

Chicago/Turabian Style

Idoia Goiri; Izaro Zubiria; Jose Luís Lavín; Hanen Benhissi; Raquel Atxaerandio; Roberto Ruiz; Nerea Mandaluniz; Aser García-Rodríguez. 2021. "Evaluating the Inclusion of Cold-Pressed Rapeseed Cake in the Concentrate for Dairy Cows upon Ruminal Biohydrogenation Process, Ruminal Microbial Community and Milk Production and Acceptability." Animals 11, no. 9: 2553.

Journal article
Published: 24 July 2021 in Animal Feed Science and Technology
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This study was conducted to assess the influence of supplementing broiler diets with a commercial biochar on productive performance, pH of digestive organs, cecum short chain fatty acid (SCFA) profile and bacterial community. 720 one day-old male Ross 308 broilers were fed with the following diets at starter (1–21 days) and grower-finisher period (22–42 days): control diet (0 g/kg of inclusion on diet of biochar, CTR) or 30 g/kg of inclusion of biochar. Regarding performance results, at the starter period animals fed a diet with biochar showed lower daily weight gain (DWG, P = 0.045) and higher feed conversion ratio (FCR, P = 0.034) but similar feed intake (FI, P = 0.928) compared to CTR. At the grower-finisher period, feeding broilers with biochar promoted an increase on DWG (P < 0.001) and a reduction on FCR (P < 0.001) with similar FI (P = 0.579) compared to CTR. For the entire period of feeding, animals fed with biochar showed an increased DWG (P < 0.001), body weight (P < 0.001) and European production efficiency factor (P < 0.001), a reduced FCR (P < 0.001) and a similar FI (P = 0.577) compared to CTR. Regarding digesta pH of digestive organs the pH of digesta of crop (P = 0.834), proventriculus (P = 0.846), gizzard (P = 0.850), ileum (P = 0.750) or cecum (P = 0.467) were not affected by biochar. Animals fed with biochar showed increased acetic (P = 0.011) and caproic (P = 0.003) contents, and similar propionic (P = 0.724), butyric (P = 0.568), isobutyric (P = 0.436), valeric (P = 0.898) and isovaleric (P = 884) contents compared to CTR. Biochar did not influence cecal bacterial species richness and diversity but altered community structure by increasing relative abundance of [Ruminococcus], Ruminococcus, Blautia and undefined genera (family Ruminococcaceae, Lachnospiraceae and Erysipelotrichaceae) and decreasing Lactobacillus, Coprococcus, Desulfotomaculum, Oscillospira, Clostridium (family Clostridiaceae) and undefined genera (families Lachnospiraceae and Ruminococcaceae). In conclusion although the inclusion on diet of 30 g/kg biochar reduced the productive performance during the starter phase, an enhanced growth of animals during the grower-finisher period was observed, resulting in a greater performance and efficiency of production for the entire cycle without affecting the pH of digestive organs and increasing acetate contents in the caecum. The greater performance could be explained by minor microbiota shifts observed at OTU (Operational Taxonomic Unit) level without disturbing the native beneficial intestinal bacteria as expressed by the retained richness and diversity of the broilers caecal microbiota.

ACS Style

Idoia Goiri; Roberto Ruiz; Raquel Atxaerandio; José Luis Lavin; Xabier Díaz de Otálora; Aser García-Rodríguez. Assessing the potential use of a feed additive based on biochar on broilers feeding upon productive performance, pH of digestive organs, cecum fermentation and bacterial community. Animal Feed Science and Technology 2021, 279, 115039 .

AMA Style

Idoia Goiri, Roberto Ruiz, Raquel Atxaerandio, José Luis Lavin, Xabier Díaz de Otálora, Aser García-Rodríguez. Assessing the potential use of a feed additive based on biochar on broilers feeding upon productive performance, pH of digestive organs, cecum fermentation and bacterial community. Animal Feed Science and Technology. 2021; 279 ():115039.

Chicago/Turabian Style

Idoia Goiri; Roberto Ruiz; Raquel Atxaerandio; José Luis Lavin; Xabier Díaz de Otálora; Aser García-Rodríguez. 2021. "Assessing the potential use of a feed additive based on biochar on broilers feeding upon productive performance, pH of digestive organs, cecum fermentation and bacterial community." Animal Feed Science and Technology 279, no. : 115039.

Journal article
Published: 01 July 2021 in Journal of Dairy Science
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ACS Style

Alejandro Saborío-Montero; Adrían López-García; Mónica Gutiérrez-Rivas; Raquel Atxaerandio; Idoia Goiri; Aser García-Rodriguez; José A. Jiménez-Montero; Carmen González; Javier Tamames; Fernando Puente-Sánchez; Luis Varona; Magdalena Serrano; Cristina Ovilo; Oscar González-Recio. A dimensional reduction approach to modulate the core ruminal microbiome associated with methane emissions via selective breeding. Journal of Dairy Science 2021, 104, 8135 -8151.

AMA Style

Alejandro Saborío-Montero, Adrían López-García, Mónica Gutiérrez-Rivas, Raquel Atxaerandio, Idoia Goiri, Aser García-Rodriguez, José A. Jiménez-Montero, Carmen González, Javier Tamames, Fernando Puente-Sánchez, Luis Varona, Magdalena Serrano, Cristina Ovilo, Oscar González-Recio. A dimensional reduction approach to modulate the core ruminal microbiome associated with methane emissions via selective breeding. Journal of Dairy Science. 2021; 104 (7):8135-8151.

Chicago/Turabian Style

Alejandro Saborío-Montero; Adrían López-García; Mónica Gutiérrez-Rivas; Raquel Atxaerandio; Idoia Goiri; Aser García-Rodriguez; José A. Jiménez-Montero; Carmen González; Javier Tamames; Fernando Puente-Sánchez; Luis Varona; Magdalena Serrano; Cristina Ovilo; Oscar González-Recio. 2021. "A dimensional reduction approach to modulate the core ruminal microbiome associated with methane emissions via selective breeding." Journal of Dairy Science 104, no. 7: 8135-8151.

Journal article
Published: 02 June 2021 in Animals
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This research aimed to evaluate in vitro organic matter digestibility, fermentation characteristics and methane production of fruit and vegetable discards processed by solid state fermentation (SSF) by Rhizopus sp. Mixtures were composed of approximately 28% citric fruits, 35% other fruits and 37% vegetables. Fruit and vegetables were processed and fermented to obtain a stabilized product. Nutritional characterization and in vitro ruminal fermentation tests were performed to determine the effect of fungal bioconversion on digestibility, end products and gas production kinetics. Results indicate that SSF reduced organic matter and reducing sugars, while it increased crude protein and neutral detergent fiber, acid detergent fiber and neutral detergent insoluble protein. The in vitro gas production showed that SSF led to a reduction of the organic matter digestibility (p< 0.001), short chain fatty acids (SCFA; p = 0.003) and CH4 (p = 0.002). SSF reduced the gas production from the insoluble fraction (p = 0.001), without modifying the production rate (p = 0.676) or the lag time (p = 0.574). Regarding SCFA profile, SSF increased acetic (p = 0.020) and decreased propionic (p = 0.004) and butyric (p = 0.006) acids proportions, increasing acetic to propionic (p = 0.008) and acetic plus butyric to propionic (p = 0.011) ratios. SSF succeeded in obtaining a stabilized material enriched in protein, but at the expense of a reduction of protein availability and organic matter digestibility. These changes should be considered before including them in a ruminant’s rations.

ACS Style

Jone Ibarruri; Idoia Goiri; Marta Cebrián; Aser García-Rodríguez. Solid State Fermentation as a Tool to Stabilize and Improve Nutritive Value of Fruit and Vegetable Discards: Effect on Nutritional Composition, In Vitro Ruminal Fermentation and Organic Matter Digestibility. Animals 2021, 11, 1653 .

AMA Style

Jone Ibarruri, Idoia Goiri, Marta Cebrián, Aser García-Rodríguez. Solid State Fermentation as a Tool to Stabilize and Improve Nutritive Value of Fruit and Vegetable Discards: Effect on Nutritional Composition, In Vitro Ruminal Fermentation and Organic Matter Digestibility. Animals. 2021; 11 (6):1653.

Chicago/Turabian Style

Jone Ibarruri; Idoia Goiri; Marta Cebrián; Aser García-Rodríguez. 2021. "Solid State Fermentation as a Tool to Stabilize and Improve Nutritive Value of Fruit and Vegetable Discards: Effect on Nutritional Composition, In Vitro Ruminal Fermentation and Organic Matter Digestibility." Animals 11, no. 6: 1653.

Journal article
Published: 11 May 2021 in Livestock Science
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Rumen microbiota has been previously related to phenotypic complex traits of relevance in dairy cattle. The joint analysis of the host's genetic background and its microbiota can be statistically modelled using similarity matrices between microorganism communities in the different hosts. Microbiota relationship matrices (K) enable considering the whole microbiota and the cumbersome interrelations between taxa, rather than analyzing single taxa one at the time. Several methods have been proposed to ordinate these matrices. The aim of this study was to compare the performance of twelve K built from different microbiome distance metrics, within a variance component estimation framework for methane concentration in dairy cattle. Phenotypic, genomic and rumen microbiome information from simulations (n = 1000) and real data (cows = 437) were analyzed. Four models were considered: an additive genomic model (GBLUP), a microbiome model (MBLUP), a genetic and microbiome effects model (HBLUP) and a genetic, microbiome and genetic × microbiome interaction effects model (HiBLUP). Results from simulation were obtained from 25 replicates. Results from simulated data suggested that Ks with flattened off-diagonal elements were more accurate in variance components estimation for all compared models that included Ks information (MBLUP, HBLUP and HiBLUP). Multidimensional scaling (MDS), redundancy analysis (RDA) and constrained correspondence analysis (CCA) performed better in simulation to estimate heritability and microbiability. The models including Ks from the MDS, RDA and CCA methods were also between the most plausible models in the real data set, according to the deviance information criteria (DIC). Real data was analyzed under the same framework as in the simulation. The most plausible model in real data was HiBLUP. Estimates variated depending on K; methane heritability (0.15-0.17) and microbiability (0.15-0.21) were lower than the proportion of the phenotypic variance attributable to the host-microbiome holobiont effect (0.42-0.59), which we have defined here as “holobiability”. The holobiability including the genomic × microbiome interaction from the HiBLUP was between 0.01 and 0.15 larger than the holobiability explained from the sum of the genetic and microbiome effects without interaction between them, from the HBLUP, depending on K. The findings in this study support the potential of the joint analysis of genomic and microbiome information. Accounting for the hologenome effect (genomic and microbiome) could improve the accuracy in variance component estimation of complex traits relevant in livestock science.

ACS Style

Alejandro Saborío-Montero; Mónica Gutiérrez-Rivas; Adrián López-García; Aser García-Rodríguez; Raquel Atxaerandio; Idoia Goiri; José Antonio Jiménez-Montero; Oscar González-Recio. Holobiont effect accounts for more methane emission variance than the additive and microbiome effects on dairy cattle. Livestock Science 2021, 250, 104538 .

AMA Style

Alejandro Saborío-Montero, Mónica Gutiérrez-Rivas, Adrián López-García, Aser García-Rodríguez, Raquel Atxaerandio, Idoia Goiri, José Antonio Jiménez-Montero, Oscar González-Recio. Holobiont effect accounts for more methane emission variance than the additive and microbiome effects on dairy cattle. Livestock Science. 2021; 250 ():104538.

Chicago/Turabian Style

Alejandro Saborío-Montero; Mónica Gutiérrez-Rivas; Adrián López-García; Aser García-Rodríguez; Raquel Atxaerandio; Idoia Goiri; José Antonio Jiménez-Montero; Oscar González-Recio. 2021. "Holobiont effect accounts for more methane emission variance than the additive and microbiome effects on dairy cattle." Livestock Science 250, no. : 104538.

Journal article
Published: 10 December 2020 in Microorganisms
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Antimicrobial and antioxidant properties of spent coffee grounds (SCG) make them a potential ingredient in a diet for ruminants. This study investigated the effects of SCG on rumen microbiota. For 51 days, 36 dairy ewes were assigned to the experimental treatments (0, 30, 50, and 100 g SCG/kg). Ruminal samples were collected on day 50. DNA was extracted and subjected to paired-end Illumina sequencing of the V3-V4 hypervariable region of the 16S rRNA genes. Bioinformatic analyses were performed using QIIME (v.1.9.0). SCG increased dose-dependently bacterial diversity and altered bacterial structure. Further, 60, 78, and 449 operational taxonomic unit (OUT) were different between control and 30, 50 and 100 g/kg SCG groups, respectively. Higher differences were observed between the control and 100 g/kg SCG group, where OTU of the genera Treponema, CF231, Butyrivibrio, BF331, Anaeroplasma, Blautia, Fibrobacter, and Clostridium were enriched with SCG. Correlations between volatile fatty acids (VFA) and bacterial taxa were sparser in the SCG groups and had little overlap. Certain bacterial taxa presented different signs of the correlation with VFA in SCG and control groups, but Butyrivibrio and Blautia consistently correlated with branched-chain VFA in all groups. SCG induced shifts in the ruminal bacterial community and altered the correlation networks among bacterial taxa and ruminal VFA.

ACS Style

Idoia Goiri; Xabier Díaz De Otálora; Roberto Ruiz; Jagoba Rey; Raquel Atxaerandio; Jose Luis Lavín; David San Martin; Mikel Orive; Bruno Iñarra; Jaime Zufia; Jabi Urkiza; Aser García-Rodríguez. Spent Coffee Grounds Alter Bacterial Communities in Latxa Dairy Ewes. Microorganisms 2020, 8, 1961 .

AMA Style

Idoia Goiri, Xabier Díaz De Otálora, Roberto Ruiz, Jagoba Rey, Raquel Atxaerandio, Jose Luis Lavín, David San Martin, Mikel Orive, Bruno Iñarra, Jaime Zufia, Jabi Urkiza, Aser García-Rodríguez. Spent Coffee Grounds Alter Bacterial Communities in Latxa Dairy Ewes. Microorganisms. 2020; 8 (12):1961.

Chicago/Turabian Style

Idoia Goiri; Xabier Díaz De Otálora; Roberto Ruiz; Jagoba Rey; Raquel Atxaerandio; Jose Luis Lavín; David San Martin; Mikel Orive; Bruno Iñarra; Jaime Zufia; Jabi Urkiza; Aser García-Rodríguez. 2020. "Spent Coffee Grounds Alter Bacterial Communities in Latxa Dairy Ewes." Microorganisms 8, no. 12: 1961.

Journal article
Published: 01 August 2020 in Journal of Dairy Science
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Records of methane emissions from 1,501 cows on 14 commercial farms in 4 regions of Spain were collected from May 2018 to June 2019. Methane concentrations (MeC) were measured using a nondispersive infrared methane detector installed within the feed bin of the automatic milking system during 14- to 21-d periods. Rumination time (RT; min/d) was collected using collars with a tag that registered time (minutes) spent eating and ruminating. The means of MeC and methane production (MeP) were 1,254.28 ppm and 182.49 g/d, respectively; mean RT was 473.38 min/d. Variance components for MeC, MeP, and RT were estimated with REML using pedigree and genomic information in a single-step model. Heritabilities for MeC and MeP were 0.11 and 0.12, respectively. Rumination time showed a slightly larger heritability estimate (0.17). The genetic correlation between MeP and MeC was high (>0.95), suggesting that selection on either trait would lead to a positive correlated response on the other. Negative correlations were estimated between RT and MeC (-0.24 ± 0.38) and MeP (-0.43 ± 0.35). Methane concentration and MeP had slightly positive correlations with milk yield (0.17 ± 0.39 and 0.21 ± 0.36), protein percentage (0.08 ± 0.32 and 0.30 ± 0.45), protein yield (0.22 ± 0.41 and 0.31 ± 0.35), fat percentage (0.02 ± 0.40 and 0.27 ± 0.36), and fat yield (0.27 ± 0.28 and 0.29 ± 0.28) from bivariate analyses. Rumination time had positive correlations with milk yield (0.41 ± 0.75) and protein yield (0.26 ± 0.57) and negative correlations with fat yield (-0.45 ± 0.32), protein percentage (-0.15 ± 0.38), and fat percentage (-0.40 ± 0.47). A positive approximated genetic correlation was estimated between fertility and MeC (0.10 ± 0.05) and MeP (0.18 ± 0.05), resulting in slightly higher CH4 production when selecting for better fertility [days open estimated breeding values (EBV) are expressed with mean 100 and SD 10, inversely related to days from calving to conception; that is, greater days open EBV implies better fertility]. Positive correlations were also estimated for stature with MeC and MeP (0.30 ± 0.04 and 0.43 ± 0.04, respectively). Other type traits (chest width, udder depth, angularity, and capacity) were positively correlated with methane traits, possibly because of higher milk yield and higher feed intake from these animals. Rumination time showed positive EBV correlations with production traits and type traits, and negative correlations with somatic cell count and body condition score. Based on the genetic correlations and heritabilities estimated in this study, methane is measurable and heritable, and estimates of genetic correlations suggest no strong opposition to current breeding objectives in Spanish Holsteins.

ACS Style

J. López-Paredes; I. Goiri; R. Atxaerandio; A. García-Rodríguez; E. Ugarte; J.A. Jiménez-Montero; R. Alenda; O. González-Recio. Mitigation of greenhouse gases in dairy cattle via genetic selection: 1. Genetic parameters of direct methane using noninvasive methods and proxies of methane. Journal of Dairy Science 2020, 103, 7199 -7209.

AMA Style

J. López-Paredes, I. Goiri, R. Atxaerandio, A. García-Rodríguez, E. Ugarte, J.A. Jiménez-Montero, R. Alenda, O. González-Recio. Mitigation of greenhouse gases in dairy cattle via genetic selection: 1. Genetic parameters of direct methane using noninvasive methods and proxies of methane. Journal of Dairy Science. 2020; 103 (8):7199-7209.

Chicago/Turabian Style

J. López-Paredes; I. Goiri; R. Atxaerandio; A. García-Rodríguez; E. Ugarte; J.A. Jiménez-Montero; R. Alenda; O. González-Recio. 2020. "Mitigation of greenhouse gases in dairy cattle via genetic selection: 1. Genetic parameters of direct methane using noninvasive methods and proxies of methane." Journal of Dairy Science 103, no. 8: 7199-7209.

Journal article
Published: 03 March 2020 in Animal Feed Science and Technology
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Spent coffee grounds (SCG) represent one of the main residues derived from restoration and hostelry. The aim of this study was to evaluate the effect of SCG, included in the concentrate at different concentrations (0, 30, 50 and 100 g/kg), on milk yield and quality, feeding behaviour, dry matter intake, apparent digestibility and ruminal short chain fatty acid profile. In this trial of 51 days of duration, 48 Latxa dairy ewes were used. The ewes were blocked in quartets according to milk yield (1918 ± 287 g) and days in milk (35.7 ± 8.9 days). All of the concentrates were formulated to be isoenergetic (1.01 UFL), isoproteic (166 g/kg), isofat (76 g/kg) and to meet the production needs. The concentrate was given in two doses of 450 g of dry matter during the morning and afternoon milkings, and fescue hay was offered ad libitum. Milk production was recorded and samples were taken for fat, protein and lactose composition analysis. Dry matter intake and apparent dry matter digestibility were estimated using two markers, and feeding behaviour data was recorded. Increasing doses of SCG in the concentrate up to 100 g/kg resulted in a linear (P < 0.001) increase in the rumen of the isovaleric and isobutyric acid contents which could explain the observed quadratic response (P < 0.001) in milk yield and a linear increase (P < 0.001) in milk protein. A linear increase (P < 0.001) in milk fat was found which could be explained by the observed linear increase (P < 0.001) in ruminal acetic and butyric acid contents. Increasing doses of SCG in the concentrate linearly decreased ruminal (P < 0.001) propionic acid content, resulting in a concomitant linear increase (P < 0.001) in acetic:propionic ratio. Furthermore, no differences were found in intake, apparent dry matter digestibility and feeding behaviour. In conclusion, inclusion of SCG up to 100 g/kg in the concentrate modified ruminal fermentation pattern towards an increase in isoacids and acetic and butyric acid contents in the rumen with a concomitant improvement in milk production and composition without impairing feeding behaviour or apparent digestibility.

ACS Style

X. Díaz de Otálora; R. Ruiz; I. Goiri; J. Rey; Raquel Atxaerandio; David San Martin; M. Orive; Bruno Iñarra; J. Zufia; J. Urkiza; Aser Garcia. valorisation of spent coffee grounds as functional feed ingredient improves productive performance of Latxa dairy ewes. Animal Feed Science and Technology 2020, 264, 114461 .

AMA Style

X. Díaz de Otálora, R. Ruiz, I. Goiri, J. Rey, Raquel Atxaerandio, David San Martin, M. Orive, Bruno Iñarra, J. Zufia, J. Urkiza, Aser Garcia. valorisation of spent coffee grounds as functional feed ingredient improves productive performance of Latxa dairy ewes. Animal Feed Science and Technology. 2020; 264 ():114461.

Chicago/Turabian Style

X. Díaz de Otálora; R. Ruiz; I. Goiri; J. Rey; Raquel Atxaerandio; David San Martin; M. Orive; Bruno Iñarra; J. Zufia; J. Urkiza; Aser Garcia. 2020. "valorisation of spent coffee grounds as functional feed ingredient improves productive performance of Latxa dairy ewes." Animal Feed Science and Technology 264, no. : 114461.

Original article
Published: 25 January 2020 in Biomass Conversion and Biorefinery
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EU countries are the most important worldwide coffee consumers with about 2.52 million tons. Coffee processing and consumption lead to substantial amounts of residues, mainly coffee silver skin and spent coffee grounds (SCG) as follows: 1 kg of coffee generates around 2 kg of wet SCG. Around 46% of this total SCG generation is landfilled with the subsequent soil, water and air pollution. So, an alternative solution for large SCG volumes currently sent to landfills is necessary. Livestock products are projected to increase up to by 70% by 2050. Many of the ingredients in the diets of EU livestock are sourced from imported raw materials from the Americas: mainly soybeans, etc. This deficit presents already a risk to social, economic and environmental progress in Europe due to the increasing scarcity of global resources. Hence, the inclusion of biowaste in animal feed is necessary to lead to additional benefits for animal feed sector: availability of environmentally friendly ingredient sources and decrease of dependence on foreign sources. This study demonstrates that coffee spent ground stands as a potential alternative ingredient in dairy cattle due to their availability in Europe, their nutritional characteristics and the results of the growing trials with animals: feeding of 5% SCG in the concentrate did not affect milk yields or fat contents and only a negligible decrease in crude protein (by 1.8%). This is because SCG was formulated as a functional ingredient in the concentrate and therefore would not impair animal performance.

ACS Style

D. San Martin; M. Orive; Bruno Iñarra; Aser Garcia; I. Goiri; Raquel Atxaerandio; J. Urkiza; J. Zufía. Spent coffee ground as second-generation feedstuff for dairy cattle. Biomass Conversion and Biorefinery 2020, 11, 589 -599.

AMA Style

D. San Martin, M. Orive, Bruno Iñarra, Aser Garcia, I. Goiri, Raquel Atxaerandio, J. Urkiza, J. Zufía. Spent coffee ground as second-generation feedstuff for dairy cattle. Biomass Conversion and Biorefinery. 2020; 11 (2):589-599.

Chicago/Turabian Style

D. San Martin; M. Orive; Bruno Iñarra; Aser Garcia; I. Goiri; Raquel Atxaerandio; J. Urkiza; J. Zufía. 2020. "Spent coffee ground as second-generation feedstuff for dairy cattle." Biomass Conversion and Biorefinery 11, no. 2: 589-599.

Research article
Published: 01 January 2020 in Animal Production Science
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The objective of the present study was to delineate the effect of different vegetable lipid supplements on apparent nutrients digestibility, nitrogen (N) metabolism and microbial protein synthesis in sheep reared under intensive conditions. Three Latxa sheep were used in a 3 × 3 Latin square design, with three 21-day periods (14-day adaptation and a 7-day sample collection each period), and were fed barley straw plus a concentrate mixture supplemented with (1) prilled palm fat (PALM), (2) cold-pressed rapeseed cake (CPRC) or (3) cold-pressed sunflower cake (CPSC). Organic matter intake did not differ among dietary treatments (P = 0.246). No significant differences were found between PALM and CPRC for apparent nutrients digestibility (P > 0.05), (N) balance (P > 0.05) or microbial protein synthesis (P > 0.05). The CPSC diet did not affect (N) intake (P = 0.481) and faecal losses (P = 0.753), but increased urinary N excretion (P = 0.030), and decreased N retention (P = 0.034), compared with PALM. Daily microbial protein synthesis, expressed as mmol of microbial N/day, was reduced by 18% with CPSC, compared with PALM (P = 0.001). Decreased microbial (N) supply was mainly due to a decline in the amount of substrate available for microbial protein synthesis due to a lower organic matter digestibility in CPSC-fed sheep. Overall, substituting palm fat with cold-pressed rapeseed cake in a high-concentrate fattening diet of sheep did not alter feed digestibility, efficiency of N utilisation or microbial protein synthesis. In contrast, replacing palm fat with cold-pressed sunflower cake reduced organic matter digestibility, increased (N) urinary losses and reduced microbial protein supply to the host animal.

ACS Style

H. Benhissi; I. Beltrán De Heredia; Aser Garcia. Apparent nutrient digestibility, nitrogen metabolism and microbial protein synthesis in sheep supplemented with different vegetable fats. Animal Production Science 2020, 60, 790 .

AMA Style

H. Benhissi, I. Beltrán De Heredia, Aser Garcia. Apparent nutrient digestibility, nitrogen metabolism and microbial protein synthesis in sheep supplemented with different vegetable fats. Animal Production Science. 2020; 60 (6):790.

Chicago/Turabian Style

H. Benhissi; I. Beltrán De Heredia; Aser Garcia. 2020. "Apparent nutrient digestibility, nitrogen metabolism and microbial protein synthesis in sheep supplemented with different vegetable fats." Animal Production Science 60, no. 6: 790.

Research article
Published: 01 January 2020 in Animal Production Science
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Context Cold-pressed rapeseed cake is a by-product of biodiesel manufacturing that can be obtained on-farm after simple mechanical extraction of the oil. It has a high crude fat content and contains significant amounts of linoleic acid, which make it a promising lipid supplement to modulate meat fatty acid profile. However, previous studies have indicated that using unsaturated fats in beef cattle diets could promote lipid oxidation and reduce meat redness. Aims The present study aimed to evaluate the effects of supplementation of intensively fattened beef steers with cold-pressed rapeseed cake on the fatty acid composition of beef fat and changes in measures of meat colour and lipid oxidation during 6 days of aerobic storage. Methods Sixteen Limousin steers were divided into two homogeneous groups and were fed ad libitum with barley straw and a concentrate mixture supplemented with either PROGRAS (PROGRAS at 2.7% of the diet, high in palmitic acid C16:0 from palm oil; CTR, experimental control; n = 8) or cold-pressed rapeseed cake (CPRC at 14.8% of the diet; CPRC treatment; n = 8) for a period of 9 months. The growth performance and carcass traits were assessed. The intramuscular fatty acids were analysed and the colour stability and lipid oxidation were measured in meat stored aerobically at 4°C for 0, 3 or 6 days. Key results Slaughter bodyweight and average daily gain were not affected by the inclusion of CPRC in the diet. Nor were there any changes in carcass weight, conformation or fatness. The longissimus thoracis from CPRC-fed animals depicted a higher UFA–SFA ratio and a lower atherogenic index than did that from animals fed CTR. Feeding CPRC increased the oleic acid , the vaccenic acid and the rumenic acid proportions in the muscle fat without affecting the ratio of C18:1 trans-10 to C18:1 trans-11. The extents of lipid oxidation and colour deterioration during aging were not affected by the dietary treatments. Conclusions The use of cold-pressed rapeseed cake as a lipid supplement in beef-steer diet improved the fatty acid profile of muscle fat without compromising meat oxidative stability, animal growth performance and carcass characteristics. Implications The supplementation of beef-steer diet with cold-pressed rapeseed cake could be an advantageous economical strategy allowing exploitation of an important by-product of small-scale biodiesel manufacturing to provide consumers with healthier meat.

ACS Style

H. Benhissi; Aser Garcia; I. Beltrán De Heredia. The effects of rapeseed cake intake during the finishing period on the fatty-acid composition of the longissimus muscle of Limousin steers and changes in meat colour and lipid oxidation during storage. Animal Production Science 2020, 60, 1103 .

AMA Style

H. Benhissi, Aser Garcia, I. Beltrán De Heredia. The effects of rapeseed cake intake during the finishing period on the fatty-acid composition of the longissimus muscle of Limousin steers and changes in meat colour and lipid oxidation during storage. Animal Production Science. 2020; 60 (8):1103.

Chicago/Turabian Style

H. Benhissi; Aser Garcia; I. Beltrán De Heredia. 2020. "The effects of rapeseed cake intake during the finishing period on the fatty-acid composition of the longissimus muscle of Limousin steers and changes in meat colour and lipid oxidation during storage." Animal Production Science 60, no. 8: 1103.

Journal article
Published: 14 October 2019 in Animals
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Cold-pressed sunflower cake (CPSC) is a cheap by-product of oil-manufacturing. Supplementing diets with CPSC, rich in fat and linoleic acid, could be an effective tool for increasing healthy fatty acids (FA) in milk. To test this hypothesis, 10 cows were used in a crossover design with two experimental diets fed during two 63-day periods. Cows' milk production was recorded and samples were taken for fat, protein, lactose, and for FA composition analysis. Dry matter intake (DMI) and dry matter apparent digestibility (DMD) were estimated using two markers. Milk acceptance test was carried out. CPSC decreased milk C12:0 (10%, p = 0.023) and C16:0 (5%, p = 0.035) and increased C18:1 cis-12 (37%, p = 0.006), C18:1 trans-11 (32%, p = 0.005), C18:2 cis-9 cis-12 (13%, p = 0.004), and cis-9 trans-11 CLA (35%, p = 0.004). CPSC increased total trans-monounsaturated FA (21%, p = 0.003), total CLA (31%, p = 0.007), and PUFA:SFA ratio (18%, p = 0.006). CPSC did not affect milk production, DMD, DMI and milk composition, but reduced fat yield (9%, p = 0.013) and FCM (7%, p = 0.013). CPSC improved milk overall acceptability. In conclusion, CPSC could modify milk FA profile without a detrimental effect on digestibility, production performance, or milk acceptance.

ACS Style

Idoia Goiri; Izaro Zubiria; Hanen Benhissi; Raquel Atxaerandio; Roberto Ruiz; Nerea Mandaluniz; Aser Garcia-Rodriguez. Use of Cold-Pressed Sunflower Cake in the Concentrate as a Low-Input Local Strategy to Modify the Milk Fatty Acid Profile of Dairy Cows. Animals 2019, 9, 803 .

AMA Style

Idoia Goiri, Izaro Zubiria, Hanen Benhissi, Raquel Atxaerandio, Roberto Ruiz, Nerea Mandaluniz, Aser Garcia-Rodriguez. Use of Cold-Pressed Sunflower Cake in the Concentrate as a Low-Input Local Strategy to Modify the Milk Fatty Acid Profile of Dairy Cows. Animals. 2019; 9 (10):803.

Chicago/Turabian Style

Idoia Goiri; Izaro Zubiria; Hanen Benhissi; Raquel Atxaerandio; Roberto Ruiz; Nerea Mandaluniz; Aser Garcia-Rodriguez. 2019. "Use of Cold-Pressed Sunflower Cake in the Concentrate as a Low-Input Local Strategy to Modify the Milk Fatty Acid Profile of Dairy Cows." Animals 9, no. 10: 803.

Journal article
Published: 01 October 2019 in Animals
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Cold-pressed sunflower cake (CPSC), by-product of oil-manufacturing, has high crude fat and linoleic acid concentrations, being a promising supplement to modulate rumen fatty acid (FA) profile. This trial studied CPSC effects on ruminal fermentation, biohydrogenation and the bacterial community in dairy cows. Ten cows were used in a crossover design with two experimental diets and fed during two 63-day periods. The cows were group fed forage ad libitum and the concentrate individually. The concentrates, control and CPSC, were isoenergetic, isoproteic and isofat. The ruminal samples collected at the end of each experimental period were analyzed for short-chain fatty acid, FA and DNA sequencing. CPSC decreased butyrate molar proportion (4%, p = 0.005). CPSC decreased C16:0 (28%, p < 0.001) and increased C18:0 (14%, p < 0.001) and total monounsaturated FA, especially C18:1 trans-11 (13%, p = 0.023). The total purine derivative excretion tended to be greater (5%, p = 0.05) with CPSC, resulting in a 6% greater daily microbial N flow. CPSC did not affect the diversity indices but increased the relative abundances of Treponema and Coprococcus, and decreased Enterococcus, Ruminococcus and Succinivibrio. In conclusion, the changes in ruminal fermentation and the FA profile were not associated with changes in microbial diversity or abundance of dominant populations, however, they might be associated with less abundant genera.

ACS Style

Izaro Zubiria; Aser Garcia-Rodriguez; Raquel Atxaerandio; Roberto Ruiz; Hanen Benhissi; Nerea Mandaluniz; Jose Luis Lavín; Leticia Abecia; Idoia Goiri; Garcia- Rodriguez; Ruiz. Effect of Feeding Cold-Pressed Sunflower Cake on Ruminal Fermentation, Lipid Metabolism and Bacterial Community in Dairy Cows. Animals 2019, 9, 755 .

AMA Style

Izaro Zubiria, Aser Garcia-Rodriguez, Raquel Atxaerandio, Roberto Ruiz, Hanen Benhissi, Nerea Mandaluniz, Jose Luis Lavín, Leticia Abecia, Idoia Goiri, Garcia- Rodriguez, Ruiz. Effect of Feeding Cold-Pressed Sunflower Cake on Ruminal Fermentation, Lipid Metabolism and Bacterial Community in Dairy Cows. Animals. 2019; 9 (10):755.

Chicago/Turabian Style

Izaro Zubiria; Aser Garcia-Rodriguez; Raquel Atxaerandio; Roberto Ruiz; Hanen Benhissi; Nerea Mandaluniz; Jose Luis Lavín; Leticia Abecia; Idoia Goiri; Garcia- Rodriguez; Ruiz. 2019. "Effect of Feeding Cold-Pressed Sunflower Cake on Ruminal Fermentation, Lipid Metabolism and Bacterial Community in Dairy Cows." Animals 9, no. 10: 755.

Original article
Published: 16 August 2019 in Journal of Animal Breeding and Genetics
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The advent of metagenomics in animal breeding poses the challenge of statistically modelling the relationship between the microbiome, the host genetics and relevant complex traits. A set of structural equation models (SEMs) of a recursive type within a Markov chain Monte Carlo (MCMC) framework was proposed here to jointly analyse the host–metagenome–phenotype relationship. A non‐recursive bivariate model was set as benchmark to compare the recursive model. The relative abundance of rumen microbes (RA), methane concentration (CH4) and the host genetics was used as a case of study. Data were from 337 Holstein cows from 12 herds in the north and north‐west of Spain. Microbial composition from each cow was obtained from whole metagenome sequencing of ruminal content samples using a MinION device from Oxford Nanopore Technologies. Methane concentration was measured with Guardian® NG infrared gas monitor from Edinburgh Sensors during cow's visits to the milking automated system. A quarterly average from the methane eructation peaks for each cow was computed and used as phenotype for CH4. Heritability of CH4 was estimated at 0.12 ± 0.01 in both the recursive and bivariate models. Likewise, heritability estimates for the relative abundance of the taxa overlapped between models and ranged between 0.08 and 0.48. Genetic correlations between the microbial composition and CH4 ranged from −0.76 to 0.65 in the non‐recursive bivariate model and from −0.68 to 0.69 in the recursive model. Regardless of the statistical model used, positive genetic correlations with methane were estimated consistently for the seven genera pertaining to the Ciliophora phylum, as well as for those genera belonging to the Euryarchaeota (Methanobrevibacter sp.), Chytridiomycota (Neocallimastix sp.) and Fibrobacteres (Fibrobacter sp.) phyla. These results suggest that rumen's whole metagenome recursively regulates methane emissions in dairy cows and that both CH4 and the microbiota compositions are partially controlled by the host genotype.

ACS Style

Alejandro Saborío‐Montero; Mónica Gutiérrez‐Rivas; Aser García‐Rodríguez; Raquel Atxaerandio; Idoia Goiri; Evangelina López De Maturana; José Antonio Jiménez‐Montero; Rafael Alenda; Oscar González‐Recio. Structural equation models to disentangle the biological relationship between microbiota and complex traits: Methane production in dairy cattle as a case of study. Journal of Animal Breeding and Genetics 2019, 137, 36 -48.

AMA Style

Alejandro Saborío‐Montero, Mónica Gutiérrez‐Rivas, Aser García‐Rodríguez, Raquel Atxaerandio, Idoia Goiri, Evangelina López De Maturana, José Antonio Jiménez‐Montero, Rafael Alenda, Oscar González‐Recio. Structural equation models to disentangle the biological relationship between microbiota and complex traits: Methane production in dairy cattle as a case of study. Journal of Animal Breeding and Genetics. 2019; 137 (1):36-48.

Chicago/Turabian Style

Alejandro Saborío‐Montero; Mónica Gutiérrez‐Rivas; Aser García‐Rodríguez; Raquel Atxaerandio; Idoia Goiri; Evangelina López De Maturana; José Antonio Jiménez‐Montero; Rafael Alenda; Oscar González‐Recio. 2019. "Structural equation models to disentangle the biological relationship between microbiota and complex traits: Methane production in dairy cattle as a case of study." Journal of Animal Breeding and Genetics 137, no. 1: 36-48.

Journal article
Published: 15 August 2019 in Animals
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The aim of this trial was to study the agreement between the non-dispersive infrared methane analyzer (NDIR) method and the hand held laser methane detector (LMD). Methane (CH4) was measured simultaneously with the two devices totaling 164 paired measurements. The repeatability of the CH4 concentration was greater with the NDIR (0.42) than for the LMD (0.23). However, for the number of peaks, repeatability of the LMD was greater (0.20 vs. 0.14, respectively). Correlation was moderately high and positive for CH4 concentration (0.73 and 0.74, respectively) and number of peaks (0.72 and 0.72, respectively), and the repeated measures correlation and the individual-level correlation were high (0.98 and 0.94, respectively). A moderate concordance correlation coefficient was observed for the CH4 concentration (0.62) and for the number of peaks (0.66). A moderate-high coefficient of individual agreement for the CH4 concentration (0.83) and the number of peaks (0.77) were observed. However, CH4 concentrations population means and all variance components differed between instruments. In conclusion, methane concentration measurements obtained by means of NDIR and LMD cannot be used interchangeably. The joint use of both methods could be considered for genetic selection purposes or for mitigation strategies only if sources of disagreement, which result in different between-subject and within-subject variabilities, are identified and corrected for.

ACS Style

Jagoba Rey; Raquel Atxaerandio; Roberto Ruiz; Eva Ugarte; Oscar González-Recio; Aser Garcia-Rodriguez; Idoia Goiri; Rey; Ruiz; González- Recio; Garcia- Rodriguez. Comparison Between Non-Invasive Methane Measurement Techniques in Cattle. Animals 2019, 9, 563 .

AMA Style

Jagoba Rey, Raquel Atxaerandio, Roberto Ruiz, Eva Ugarte, Oscar González-Recio, Aser Garcia-Rodriguez, Idoia Goiri, Rey, Ruiz, González- Recio, Garcia- Rodriguez. Comparison Between Non-Invasive Methane Measurement Techniques in Cattle. Animals. 2019; 9 (8):563.

Chicago/Turabian Style

Jagoba Rey; Raquel Atxaerandio; Roberto Ruiz; Eva Ugarte; Oscar González-Recio; Aser Garcia-Rodriguez; Idoia Goiri; Rey; Ruiz; González- Recio; Garcia- Rodriguez. 2019. "Comparison Between Non-Invasive Methane Measurement Techniques in Cattle." Animals 9, no. 8: 563.

Communication
Published: 06 May 2019 in Microorganisms
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Diet has an essential influence in the establishment of the cecum microbial communities in poultry, so its supplementation with safe additives, such as probiotics, prebiotics, and synbiotics might improve animal health and performance. This study showed the ceca microbiome modulations of laying hens, after feeding with dry whey powder as prebiotics, Pediococcus acidilactici as probiotics, and the combination of both as synbiotics. A clear grouping of the samples induced per diet was observed (p < 0.05). Operational taxonomic units (OTUs) identified as Olsenella spp., and Lactobacillus crispatus increased their abundance in prebiotic and synbiotic treatments. A core of the main functions was shared between all metagenomes (45.5%), although the genes encoding for the metabolism of butanoate, propanoate, inositol phosphate, and galactose were more abundant in the prebiotic diet. The results indicated that dietary induced-changes in microbial composition did not imply a disturbance in the principal biological roles, while the specific functions were affected.

ACS Style

Carolina Pineda-Quiroga; Daniel Borda Molina; Diego Chaves-Moreno; Roberto Ruiz; Raquel Atxaerandio; Amélia Camarinha-Silva; Aser García-Rodríguez. Microbial and Functional Profile of the Ceca from Laying Hens Affected by Feeding Prebiotics, Probiotics, and Synbiotics. Microorganisms 2019, 7, 123 .

AMA Style

Carolina Pineda-Quiroga, Daniel Borda Molina, Diego Chaves-Moreno, Roberto Ruiz, Raquel Atxaerandio, Amélia Camarinha-Silva, Aser García-Rodríguez. Microbial and Functional Profile of the Ceca from Laying Hens Affected by Feeding Prebiotics, Probiotics, and Synbiotics. Microorganisms. 2019; 7 (5):123.

Chicago/Turabian Style

Carolina Pineda-Quiroga; Daniel Borda Molina; Diego Chaves-Moreno; Roberto Ruiz; Raquel Atxaerandio; Amélia Camarinha-Silva; Aser García-Rodríguez. 2019. "Microbial and Functional Profile of the Ceca from Laying Hens Affected by Feeding Prebiotics, Probiotics, and Synbiotics." Microorganisms 7, no. 5: 123.

Journal article
Published: 20 April 2019 in Small Ruminant Research
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A lactation study was carried out utilizing 72 ewes in a 2 × 3 factorial arrangement involving two forages: Tall fescue (FES) and sainfoin (SAIN) hays; and 3 concentrates, which contained hydrogenated prilled palm fat (CTR), cold-pressed sunflower cake (SUN) or cold-pressed rapeseed cake (RPS) as fat sources. Ewes were divided into 6 equilibrated groups of 12 ewes each, according to milk yield and days in milk. Concentrates were offered individually and forage was group fed ad libitum. Milk yield was daily recorded; individual samples of milk were taken for fat, protein, lactose and for fatty acid (FA) composition analysis. Dry matter intake (DMI) and organic matter apparent digestibility (OMD) were estimated using two markers. Feeding behaviour was recorded for 48 h. Blood samples were collected for non-esterified fatty acids, blood urea nitrogen and IGF-1 determinations. Curd acceptance test was carried out using a non-trained sensory panel using a 10-point line scale for the attributes of appearance, flavour, odour, texture and overall acceptability. Milk yield and composition were analysed using the MIXED procedure for repeated measures with fixed effects of concentrate, forage and week, their interaction and the initial record measured at week 0 as covariate, and day and ewe as random effects. Total, hay and concentrate DMI, OMD, plasma metabolites and milk FA profile were analysed using the GLM procedure. Feeding behaviour and sensorial data were analysed using the previous statistical model but without including a covariate. SUN reduced milk total saturated fatty acids (SFA) compared to CTR with both forages, while RPS only reduced SFA with SAIN. Polyunsaturated FA were increased with both cakes and SAIN. SUN increased n-6:n-3 ratio compared to CTR (+54%) and RPS (+62%), and SAIN reduced this ratio compared to FES (-27%). SUN reduced milk index of atherogenicity compared to CTR (up to -33%) with both forages, while RPS reduced (up to -31%) this index only with SAIN. Concentrate did not affect milk production, digestibility and intake, but SAIN increased these traits together with plasma IGF-1. Neither concentrate nor forage affected curd acceptance traits. Healthier milk can be obtained with cakes. Nevertheless the forage used in the ration seems to be of great importance. Neither cakes nor SAIN had a detrimental effect on digestibility, production performance or curd acceptance in lactating ewes.

ACS Style

A. Pascual; C. Pineda-Quiroga; I. Goiri; R. Atxaerandio; R. Ruiz; A. García-Rodríguez. Effects of feeding UFA-rich cold-pressed oilseed cakes and sainfoin on dairy ewes’ milk fatty acid profile and curd sensory properties. Small Ruminant Research 2019, 175, 96 -103.

AMA Style

A. Pascual, C. Pineda-Quiroga, I. Goiri, R. Atxaerandio, R. Ruiz, A. García-Rodríguez. Effects of feeding UFA-rich cold-pressed oilseed cakes and sainfoin on dairy ewes’ milk fatty acid profile and curd sensory properties. Small Ruminant Research. 2019; 175 ():96-103.

Chicago/Turabian Style

A. Pascual; C. Pineda-Quiroga; I. Goiri; R. Atxaerandio; R. Ruiz; A. García-Rodríguez. 2019. "Effects of feeding UFA-rich cold-pressed oilseed cakes and sainfoin on dairy ewes’ milk fatty acid profile and curd sensory properties." Small Ruminant Research 175, no. : 96-103.

Journal article
Published: 01 March 2018 in Journal of Dairy Science
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This study aimed to evaluate whether the host genotype exerts any genetic control on the microbiome composition of the rumen in cattle. Microbial DNA was extracted from 18 samples of ruminal content from 2 breeds (Holstein and Brown Swiss). Reads were processed using mothur (https://www.mothur.org/) in 16S and 18S rRNA gene-based analyses. Then, reads were classified at the genus clade, resulting in 3,579 operational taxonomic units (OTU) aligned against the 16S database and 184 OTU aligned against the 18S database. After filtering on relative abundance (>0.1%) and penetrance (95%), 25 OTU were selected for the analyses (17 bacteria, 1 archaea, and 7 ciliates). Association with the genetic background of the host animal based on the principal components of a genomic relationship matrix based on single nucleotide polymorphism markers was analyzed using Bayesian methods. Fifty percent of the bacteria and archaea genera were associated with the host genetic background, including Butyrivibrio, Prevotella, Paraprevotella, and Methanobrevibacter as main genera. Forty-three percent of the ciliates analyzed were also associated with the genetic background of the host. In total, 48% of microbes were associated with the host genetic background. The results in this study support the hypothesis and provide some evidence that there exists a host genetic component in cattle that can partially regulate the composition of the microbiome.

ACS Style

O. Gonzalez-Recio; I. Zubiria; A. García-Rodríguez; A. Hurtado; R. Atxaerandio. Short communication: Signs of host genetic regulation in the microbiome composition in 2 dairy breeds: Holstein and Brown Swiss. Journal of Dairy Science 2018, 101, 2285 -2292.

AMA Style

O. Gonzalez-Recio, I. Zubiria, A. García-Rodríguez, A. Hurtado, R. Atxaerandio. Short communication: Signs of host genetic regulation in the microbiome composition in 2 dairy breeds: Holstein and Brown Swiss. Journal of Dairy Science. 2018; 101 (3):2285-2292.

Chicago/Turabian Style

O. Gonzalez-Recio; I. Zubiria; A. García-Rodríguez; A. Hurtado; R. Atxaerandio. 2018. "Short communication: Signs of host genetic regulation in the microbiome composition in 2 dairy breeds: Holstein and Brown Swiss." Journal of Dairy Science 101, no. 3: 2285-2292.

Journal article
Published: 01 January 2018 in Animal
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Dietary interventions are a common practice in the poultry industry to promote optimal performance and health of animals. Here, we aim at assessing the influence of supplementing broiler diets with dry whey powder (DWP) and whey protein concentrate (WPC) on nutrient coefficient of apparent ileal digestibility (CAID) and productive performance. Cecal microbiota composition was also determined using Illumina amplicon sequencing. Dietary treatments were control diet (no supplementation of DWP or WPC), 60-DWP (60 g/kg of DWP), and 80-WPC (80 g/kg of WPC). One-day-old male broilers were randomly assigned to one of three treatments, and housed in floor pens. In Trial 1, 90 1-day-old chicks were allocated to three pens/treatment, with 10 birds/pen, during 21 days for CAID evaluation. Diet 60-DWP increased Ca CAID (P=0.041), while diet 80-WPC improved Ca and P CAID (PPPP=0.048 for ADG), and during the entire feeding period (PPP=0.048), when compared to control diet. At day 42, cecal microbial communities of chickens that were fed with 60-DWP and 80-WPC differed from those fed with control diet (R=0.776, P=0.008; and R=0.740, P=0.008, respectively). The abundance of Bacteroides fragilis, Bacteroides spp., Escherichia coli/Shigella flexneri and Megamonas furniformis increased when 60-DWP and 80-WPC diets were offered, while the presence of Helicobacter pullorum decreased. Lactobacillus salivarius consistently increased in chickens with better feed conversion ratio, which were those fed with 60-DWP. The results obtained in the present study indicate that growth of chickens is improved by DWP and WPC supplementation because of a higher mineral digestibility, increased feed intake and modulation of cecal microbiota communities.

ACS Style

C. Pineda-Quiroga; Amélia Camarinha Silva; Daniel Borda Molina; Raquel Atxaerandio; R. Ruiz; Aser Garcia. Feeding broilers with dry whey powder and whey protein concentrate affected productive performance, ileal digestibility of nutrients and cecal microbiota community. Animal 2018, 12, 692 -700.

AMA Style

C. Pineda-Quiroga, Amélia Camarinha Silva, Daniel Borda Molina, Raquel Atxaerandio, R. Ruiz, Aser Garcia. Feeding broilers with dry whey powder and whey protein concentrate affected productive performance, ileal digestibility of nutrients and cecal microbiota community. Animal. 2018; 12 (4):692-700.

Chicago/Turabian Style

C. Pineda-Quiroga; Amélia Camarinha Silva; Daniel Borda Molina; Raquel Atxaerandio; R. Ruiz; Aser Garcia. 2018. "Feeding broilers with dry whey powder and whey protein concentrate affected productive performance, ileal digestibility of nutrients and cecal microbiota community." Animal 12, no. 4: 692-700.

Research article
Published: 01 January 2018 in Animal Production Science
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The present study aimed to evaluate the effect of substituting high-linoleic cold-pressed rapeseed or sunflower cakes for palm fat on fatty acids biohydrogenation in an artificial rumen. Three isoproteic and isolipidic diets (forage : concentrate ratio 10 : 90) were evaluated. The three diets consisted of barley straw plus a concentrate mixture supplemented with (1) prilled palm fat (CTR, Control), (2) cold-pressed rapeseed cake (CPRC treatment) or (3) cold-pressed sunflower cake (CPSC treatment) as a lipid source. The assay was conducted using a Rusitec unit consisting of six vessels (two vessels per treatment). After 7-day adaptation period, nutrients disappearance, rumen fermentation parameters and fatty acid profile of rumen digesta were determined for 3 days. CPRC treatment had no effect on nutrients disappearances and rumen fermentation. In contrast, CPSC reduced neutral detergent fibre (P = 0.04), acid detergent fibre (P = 0.01), protein (P = 0.01), organic matter (P < 0.01) and dry matter (P = 0.01) disappearances, compared with CTR and CPRC. CPSC also decreased total volatile fatty acids (P = 0.01) production and shifted rumen fermentation pattern towards lower acetate (P = 0.03) and higher propionate proportion (P = 0.01), in comparison to CTR and CPRC. Both CPRC and CPSC altered the fatty acids composition of ruminal digesta by decreasing the total saturated fatty acids (P < 0.01) and increasing the accumulation of C18:0 (P < 0.01), total C18:1 cis (P < 0.01) and total C18:1 trans (P < 0.01). Vaccenic acid was increased (P < 0.01) 2.18-fold by CPRC and 4.09-fold by CPSC. C18:1 trans-10 : trans-11 ratio remained constant among treatments (P = 0.31). Rumenic acid was not affected by CPRC but was increased (P = 0.04) 4.25- and 2.83-fold by CPSC compared with CTR and CPRC, respectively. Overall, feeding CPRC or CPSC to ruminants might improve the ruminal fatty acid profile mainly by reducing saturated fatty acids and promoting cis-monounsaturated fatty acids and vaccenic acid accumulation without altering the trans-10 : trans-11 ratio. These changes in rumen fatty acid composition could occur without detrimental effects on ruminal fermentation for CPRC but they might be associated with impaired rumen function for CPSC.

ACS Style

H. Benhissi; I. Beltrán De Heredia; Aser Garcia. Effect of replacing palm fat with high-linoleic cold-pressed rapeseed or sunflower cakes on fatty acid biohydrogenation in an artificial rumen (Rusitec). Animal Production Science 2018, 58, 499 -506.

AMA Style

H. Benhissi, I. Beltrán De Heredia, Aser Garcia. Effect of replacing palm fat with high-linoleic cold-pressed rapeseed or sunflower cakes on fatty acid biohydrogenation in an artificial rumen (Rusitec). Animal Production Science. 2018; 58 (3):499-506.

Chicago/Turabian Style

H. Benhissi; I. Beltrán De Heredia; Aser Garcia. 2018. "Effect of replacing palm fat with high-linoleic cold-pressed rapeseed or sunflower cakes on fatty acid biohydrogenation in an artificial rumen (Rusitec)." Animal Production Science 58, no. 3: 499-506.