This page has only limited features, please log in for full access.

Dr. Jose Gere
Consejo Nacional de Investigaciones Científicas y Técnicas - CONICET

Basic Info


Research Keywords & Expertise

0 Enteric methane emission
0 SF6 technique
0 ruminants production
0 GHG emission factor
0 ruminants nutrition

Fingerprints

SF6 technique
Enteric methane emission

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
Profile ImageCecilia Loza Kiel University
Following: 2 users
View all

Feed

Journal article
Published: 19 March 2021 in Animals
Reads 0
Downloads 0

The aim of this study was to measure methane emissions (CH4) and herbage intake, and, on the basis of these results, obtain the methane yield (MY, methane yield as g CH4/kg dry matter intake (DMI) and Ym, methane yield as a percentage of Gross Energy intake), from beef cows grazing on native grasslands. We used forty pregnant heifers, with two treatments of herbage allowance (HA) adjusted seasonally (8 and 5 kg dry matter (DM)/kg cattle live weight (LW), on average), during autumn, winter and spring. Methane emissions (207 g CH4/d), organic matter intake (OMI, 7.7 kg organic matter (OM)/d), MY (23.6 g CH4/kg DMI) and Ym (7.4%), were similar between treatments. On the other hand, all variables had a marked increase in spring (10.8 kg OM/d and 312 g CH4/d), except for Ym. The methane emission factor from Intergovernmental Panel on Climate Change (IPCC) Tier 2 estimated with these results was 78 kg CH4/head/year. The results show that methane emissions and intake were influenced by the season, but not by the HA analyzed in this study. This information for cow–calf systems in native grasslands in Uruguay can be used in National greenhouse gases (GHG) inventories, representing a relevant contribution to global GHG inventories.

ACS Style

M. Orcasberro; Cecilia Loza; José Gere; Pablo Soca; Valentín Picasso; Laura Astigarraga. Seasonal Effect on Feed Intake and Methane Emissions of Cow–Calf Systems on Native Grassland with Variable Herbage Allowance. Animals 2021, 11, 882 .

AMA Style

M. Orcasberro, Cecilia Loza, José Gere, Pablo Soca, Valentín Picasso, Laura Astigarraga. Seasonal Effect on Feed Intake and Methane Emissions of Cow–Calf Systems on Native Grassland with Variable Herbage Allowance. Animals. 2021; 11 (3):882.

Chicago/Turabian Style

M. Orcasberro; Cecilia Loza; José Gere; Pablo Soca; Valentín Picasso; Laura Astigarraga. 2021. "Seasonal Effect on Feed Intake and Methane Emissions of Cow–Calf Systems on Native Grassland with Variable Herbage Allowance." Animals 11, no. 3: 882.

Journal article
Published: 20 February 2021 in Agriculture
Reads 0
Downloads 0

Methane is a major constituent of greenhouse gas (GHG) emissions from ruminants, and mitigation strategies are needed to alleviate this negative environmental impact while maintaining the environmental and other benefits of grazing systems. Forages containing plant-specialized metabolites (PSM), particularly condensed tannins, may help reduce enteric methane (CH4) emissions. However, information on in vivo CH4 emissions from cows grazing mixtures that contain bioactive herbs is scarce. Accordingly, this study compared a binary mixture of perennial ryegrass (Lolium perenne) and white clover (Trifolium repens) against a diverse mixture of six additional species, including tannin-rich species like birdsfoot trefoil (Lotus corniculatus) and salad burnet (Sanguisorba minor), in a full-grazing dairy system. Enteric CH4 emissions were measured using the SF6 tracer technique. Cows grazing diverse mixtures increased their energy-corrected milk (ECM) yield by 4% (p < 0.001) compared with binary mixtures. However, CH4 emissions per kg ECM were also 11% greater for the diverse mixtures (p < 0.05). The very high feed quality and milk yield from both mixtures explained the low CH4 emissions recorded relative to the milk output. The addition of forbs did not provide additional benefits at these intensities, as they were maintained in low yield shares throughout.

ACS Style

Cecilia Loza; Thorsten Reinsch; Ralf Loges; Friedhelm Taube; José Gere; Christof Kluß; Mario Hasler; Carsten Malisch. Methane Emission and Milk Production from Jersey Cows Grazing Perennial Ryegrass–White Clover and Multispecies Forage Mixtures. Agriculture 2021, 11, 175 .

AMA Style

Cecilia Loza, Thorsten Reinsch, Ralf Loges, Friedhelm Taube, José Gere, Christof Kluß, Mario Hasler, Carsten Malisch. Methane Emission and Milk Production from Jersey Cows Grazing Perennial Ryegrass–White Clover and Multispecies Forage Mixtures. Agriculture. 2021; 11 (2):175.

Chicago/Turabian Style

Cecilia Loza; Thorsten Reinsch; Ralf Loges; Friedhelm Taube; José Gere; Christof Kluß; Mario Hasler; Carsten Malisch. 2021. "Methane Emission and Milk Production from Jersey Cows Grazing Perennial Ryegrass–White Clover and Multispecies Forage Mixtures." Agriculture 11, no. 2: 175.

Journal article
Published: 05 January 2021 in Veterinary World
Reads 0
Downloads 0

Background and Aim: Nitrate (NO3–) reduces enteric methane emissions and could be a source of non-protein nitrogen in ruminant feeds. Nonetheless, it has a potential toxic effect that could compromise animal health and production. The purpose of this study was to determine the effects of progressive inclusion of NO3– in the diet on the hematological, biochemical, and blood gases parameters, in turn, the effects on feed intake and live weight gain (LWG) in Holstein calves. Materials and Methods: Eighteen Holstein heifers and steers (nine animals/treatment) were maintained in individual pens for 45 days. Animals were randomly allocated to either a control or nitrate diet (ND) (containing 15 g of NO3–/kg of dry matter [DM]). The biochemical parameters and blood gases were analyzed only in the NO3– group on days: -1, 1, 7, 13, 19, and 25 corresponding to 0, 20, 40, 60, 80, and 100% of the total inclusion of NO3– in the diet, respectively. In addition, DM intake (DMI) and LWG were evaluated among dietary treatments. Results: Feeding the ND did not influence DMI or LWG (p>0.05). Methemoglobin (MetHb) and deoxyhemoglobin increased according to the NO3– concentrations in the diet (p0.05). However, glucose, urea, aspartate aminotransferase (AST), and retinol concentrations increased (p

ACS Style

Abimael Ortiz-Chura; Gisela Marcoppido; José Gere; Gustavo Depetris; Francisco Stefañuk; Marcos D. Trangoni; Silvio L. Cravero; Claudia Faverín; Angel Cataldi; María E. Cerón-Cucchi. Changes in hematological, biochemical, and blood gases parameters in response to progressive inclusion of nitrate in the diet of Holstein calves. Veterinary World 2021, 14, 61 -69.

AMA Style

Abimael Ortiz-Chura, Gisela Marcoppido, José Gere, Gustavo Depetris, Francisco Stefañuk, Marcos D. Trangoni, Silvio L. Cravero, Claudia Faverín, Angel Cataldi, María E. Cerón-Cucchi. Changes in hematological, biochemical, and blood gases parameters in response to progressive inclusion of nitrate in the diet of Holstein calves. Veterinary World. 2021; 14 (1):61-69.

Chicago/Turabian Style

Abimael Ortiz-Chura; Gisela Marcoppido; José Gere; Gustavo Depetris; Francisco Stefañuk; Marcos D. Trangoni; Silvio L. Cravero; Claudia Faverín; Angel Cataldi; María E. Cerón-Cucchi. 2021. "Changes in hematological, biochemical, and blood gases parameters in response to progressive inclusion of nitrate in the diet of Holstein calves." Veterinary World 14, no. 1: 61-69.

Short communication
Published: 24 May 2019 in New Zealand Journal of Agricultural Research
Reads 0
Downloads 0

To determine the methane (CH4) emission factors for beef cows in Argentina, we carried out two experiments to test the effect of different diets on methane emission from grazing conditions. In experiment 1, diet consisted of native grass-based pasture vs. sorghum-based pasture (63.1% and 63.5% of dry matter digestibility (DMD) respectively), and in experiment 2, it consisted of native grass-based pasture vs. alfalfa hay (45.2% and 43.6% of DMD respectively). In both experiments, CH4 production showed statistically significant differences (202.7 ± 11.5 and 157.5 ± 10.6 g/d for native grass-based pasture and sorghum respectively; 157.4 ± 8.9 and 190.6 ± 9.4 g/d for native grass-based pasture and lucerne hay respectively). The energy lost through eructation of CH4 was less for cows grazing sorghum than for cows grazing native grass-based pasture (4.3% ± 0.3% vs 5.6% ± 0.4%), and it was similar between the latter and cows grazing alfalfa hay (7.1% ± 0.6% vs 8.2% ± 0.5%). The results support that low quality diets increase methane yield (Ym).

ACS Style

José I. Gere; Ricardo A. Bualó; Ariel L. Perini; Ricardo D. Arias; Facundo M. Ortega; Adan E. Wulff; Guillermo Berra. Methane emission factors for beef cows in Argentina: effect of diet quality. New Zealand Journal of Agricultural Research 2019, 64, 260 -268.

AMA Style

José I. Gere, Ricardo A. Bualó, Ariel L. Perini, Ricardo D. Arias, Facundo M. Ortega, Adan E. Wulff, Guillermo Berra. Methane emission factors for beef cows in Argentina: effect of diet quality. New Zealand Journal of Agricultural Research. 2019; 64 (2):260-268.

Chicago/Turabian Style

José I. Gere; Ricardo A. Bualó; Ariel L. Perini; Ricardo D. Arias; Facundo M. Ortega; Adan E. Wulff; Guillermo Berra. 2019. "Methane emission factors for beef cows in Argentina: effect of diet quality." New Zealand Journal of Agricultural Research 64, no. 2: 260-268.

Journal article
Published: 01 May 2019 in Journal of Environmental Quality
Reads 0
Downloads 0

Residential use of natural gas (NG) for heating and cooking purposes may contribute significantly to CH4 emissions to the atmosphere. To analyze whether the NG demand in the city of Tandil, Argentina, contributes to the increase in atmospheric CH4 concentration, we conducted systematic collections of time-integrated air samples for a year in six city sites with different population and built-up density. Some meteorological parameters and NG consumption were registered. Atmospheric CH4 concentration ranged from 1.12 to 1.95 mg m−3 (1.72 to 2.84 ppm) with significant seasonal and spatial variations. In all the sites, with the exception of a peri-urban site bordering rural areas, the maximum CH4 concentrations were measured during the coldest months, with a statistically significant correlation between residential and commercial NG consumption with respect to air temperature (p < 0.001, R = −0.84 to −0.69) and atmospheric CH4 concentration (p < 0.05, R = 0.58 to 0.94). In Argentina, the most popular home heating system is the balanced-draft heater, which has a thermal efficiency of 39 to 63%. This low efficiency allows us to attribute the highest atmospheric CH4 concentration found during the coldest months mainly to the leaks of the heating systems and the greater residential use of NG. Repairing the gas leaks by increasing thermal efficiency or replacing heating systems with more efficient ones will bring economic, environmental, and health benefits. This study is important for our country where the dependence on the use of NG from heating systems is significant. Copyright © 2019. . © 2019 The Authors. Re-use requires permission from the publisher.

ACS Style

Victoria S. Fusé; José I. Gere; Daiana Urteaga; M. Paula Juliarena; Sergio A. Guzmán; Roberto Gratton. Atmospheric Methane Concentration Allows Estimating Natural Gas Leaks in Heating Systems in Tandil, Argentina. Journal of Environmental Quality 2019, 48, 762 -769.

AMA Style

Victoria S. Fusé, José I. Gere, Daiana Urteaga, M. Paula Juliarena, Sergio A. Guzmán, Roberto Gratton. Atmospheric Methane Concentration Allows Estimating Natural Gas Leaks in Heating Systems in Tandil, Argentina. Journal of Environmental Quality. 2019; 48 (3):762-769.

Chicago/Turabian Style

Victoria S. Fusé; José I. Gere; Daiana Urteaga; M. Paula Juliarena; Sergio A. Guzmán; Roberto Gratton. 2019. "Atmospheric Methane Concentration Allows Estimating Natural Gas Leaks in Heating Systems in Tandil, Argentina." Journal of Environmental Quality 48, no. 3: 762-769.

Journal article
Published: 12 October 2018 in Translational Animal Science
Reads 0
Downloads 0

The objective of this study was to quantify the emissions of enteric CH4 from growing Hereford steers raised under feedlot conditions based on contrasting levels of residual feed intake (RFI). A repeated measurements experiment was conducted over 20 d to determine CH4 production from two groups of nine Hereford steers, with contrasting RFI values (mean ± SD): low RFI (LRFI group; −0.78 ± 0.22 kg DMI/d) vs. high RFI (HRFI group; 0.83 ± 0.34 kg DMI/d). Steers were selected from a larger contemporary population in which the RFI was evaluated. Steers were maintained under confined conditions with ad libitum access to water and feed, comprising a total mixed ration of 55% sorghum silage, 21% barley silage, 21% corn grain, and 3% protein–mineral–vitamin–premix, provided twice a day. Before the beginning of CH4 measurements, the live weight of both groups of animals was determined, which on average (±SEM) was 357.0 ± 5.11 and 334.0 ± 10.17 kg in the LRFI and HRFI groups, respectively. Methane emission (g/d) was measured on each animal with the sulfur hexafluoride (SF6) tracer technique, during two consecutive periods of 5 d. Individual daily intake and feeding behavior characteristics were measured using a GrowSafe automated feeding system (Model 6000, GrowSafe Systems Ltd, Airdrie, Alberta, Canada). Methanogens in the ruminal content were quantified using quantitative polymerase chain reaction with primers targeting the mcrA gene. Methane emission was near 27% lower in animals with LRFI when expressed in absolute terms (g/d; 26.8%; P = 0.009), by unit of dry matter intake (g CH4/kg; 27.9%, P = 0.021), or as % of gross energy intake (26.7%; P = 0.027). These differences could not be explained by differences in amount of total of methanogens (average = 9.82 log10 units; P = 0.857). However, there were some differences in animal feeding behavior that could explain these differences (e.g., LRFI animals tended to spend less time in feeders). Our results suggest that, in Hereford steers, the selection by RFI values is a promising mitigation strategy for the reduction of the emission of enteric CH4.

ACS Style

Yoana Dini; Cecilia Cajarville; José Ignacio Gere; Sofía Fernández; Martin Fraga; Maria Isabel Pravia; Elly Ana Navajas; Verónica S Ciganda. Association between residual feed intake and enteric methane emissions in Hereford steers. Translational Animal Science 2018, 3, 239 -246.

AMA Style

Yoana Dini, Cecilia Cajarville, José Ignacio Gere, Sofía Fernández, Martin Fraga, Maria Isabel Pravia, Elly Ana Navajas, Verónica S Ciganda. Association between residual feed intake and enteric methane emissions in Hereford steers. Translational Animal Science. 2018; 3 (1):239-246.

Chicago/Turabian Style

Yoana Dini; Cecilia Cajarville; José Ignacio Gere; Sofía Fernández; Martin Fraga; Maria Isabel Pravia; Elly Ana Navajas; Verónica S Ciganda. 2018. "Association between residual feed intake and enteric methane emissions in Hereford steers." Translational Animal Science 3, no. 1: 239-246.

Research article
Published: 24 September 2018 in Journal of the Science of Food and Agriculture
Reads 0
Downloads 0

BACKGROUND Copper (Cu) is an essential microelement to the health and proper functioning of metabolic processes in animals, but the particular function of Cu in fermentation processes and the formation of methane in the rumen have been poorly analyzed. The innovative aspect of this study was to investigate the effects of high doses of Cu as CuSO4 on in vitro ruminal degradation, fermentation patterns, and methane (CH4) production. RESULTS There was a decrease (P < 0.04) on in vitro dry matter and organic matter degradability from 60 to 100 μg of Cu g‐1 of DM. Ammonia concentration decreased drastically with increasing Cu levels (linear effect, P < 0.01). Total bacteria and volatile fatty acids (quadratic effect, P < 0.02) were reduced with 80 and 100 μg of Cu g‐1 of DM. Methane production (mL g‐1 digestible organic matter) was decreased when dosages of Cu were increased (linear effect, P < 0.003). CONCLUSION Overall, the addition of increasing levels of Cu to 40 μg of Cu g‐1 of DM did not have an adverse impact on ruminal bacteria growth and decreased CH4 production, without affecting the ruminal kinetics. This article is protected by copyright. All rights reserved.

ACS Style

David Hernandez; Daniel Cervantes-Gómez; J. Efrén Ramírez‐Bribiesca; Mario Cobos-Peralta; René Pinto-Ruiz; Laura Astigarraga‐Fernández; José Ignacio Gere. The influence of copper levels on in vitro ruminal fermentation, bacterial growth and methane production. Journal of the Science of Food and Agriculture 2018, 99, 1073 -1077.

AMA Style

David Hernandez, Daniel Cervantes-Gómez, J. Efrén Ramírez‐Bribiesca, Mario Cobos-Peralta, René Pinto-Ruiz, Laura Astigarraga‐Fernández, José Ignacio Gere. The influence of copper levels on in vitro ruminal fermentation, bacterial growth and methane production. Journal of the Science of Food and Agriculture. 2018; 99 (3):1073-1077.

Chicago/Turabian Style

David Hernandez; Daniel Cervantes-Gómez; J. Efrén Ramírez‐Bribiesca; Mario Cobos-Peralta; René Pinto-Ruiz; Laura Astigarraga‐Fernández; José Ignacio Gere. 2018. "The influence of copper levels on in vitro ruminal fermentation, bacterial growth and methane production." Journal of the Science of Food and Agriculture 99, no. 3: 1073-1077.

Research article
Published: 01 January 2018 in Animal Production Science
Reads 0
Downloads 0

Enteric methane (CH4) emissions are directly related to the quantity and type of feed intake. Existing mitigation strategies, for example, the addition of legumes to grass-based diets and increased use of grains, have been thoroughly researched and applied in different production systems. In this paper, we propose a need to expand the capacity to mitigate enteric CH4 emissions in cattle under grazing conditions. The objective of this paper was to contribute to evaluate a mitigation strategy under grazing conditions of using contrasting levels of pasture quality. The study was performed with 20 heifers twice during the year: winter and spring. Each season, the study employed a crossover design with two treatments and two 5-day measurement periods. The treatments were two pastures with different nutritional values, including a pasture with a low quality (70% of neutral detergent fibre, 1% of ether extract, 8% of non-fibre carbohydrates), 9% of crude protein, 35% of dry matter digestibility and a pasture with a high quality (42% neutral detergent fibre, 1.3% ether extract, 24% non-fibre carbohydrates, 21% crude protein and 63% dry matter digestibility). Enteric CH4 emissions were measured with sulfur hexafluoride tracer technique. The dry matter intake (kg/day) was measured indirectly using titanium dioxide as an external marker. CH4 emissions from animals grazing the high-quality pasture were 14% lower expressed as % of gross energy intake, and 11% lower expressed by unit of dry matter intake (g CH4/kg). These results quantitative showed the alternative to mitigate CH4 emissions from grazing bovines exclusively through the improvement of the forage quality offered.

ACS Style

Y. Dini; José Ignacio Gere; Cecilia Cajarville; Verónica S. Ciganda. Using highly nutritious pastures to mitigate enteric methane emissions from cattle grazing systems in South America. Animal Production Science 2018, 58, 2329 .

AMA Style

Y. Dini, José Ignacio Gere, Cecilia Cajarville, Verónica S. Ciganda. Using highly nutritious pastures to mitigate enteric methane emissions from cattle grazing systems in South America. Animal Production Science. 2018; 58 (12):2329.

Chicago/Turabian Style

Y. Dini; José Ignacio Gere; Cecilia Cajarville; Verónica S. Ciganda. 2018. "Using highly nutritious pastures to mitigate enteric methane emissions from cattle grazing systems in South America." Animal Production Science 58, no. 12: 2329.

Article
Published: 26 September 2016 in Environmental Monitoring and Assessment
Reads 0
Downloads 0

The global methane (CH4) emission of lakes is estimated at between 6 and 16 % of total natural CH4 emissions. However, these values have a high uncertainty due to the wide variety of lakes with important differences in their morphological, biological, and physicochemical parameters and the relatively scarse data from southern mid-latitude lakes. For these reasons, we studied CH4 fluxes and CH4 dissolved in water in a typical shallow lake in the Pampean Wetland, Argentina, during four periods of consecutive years (April 2011–March 2015) preceded by different rainfall conditions. Other water physicochemical parameters were measured and meteorological data were reported. We identified three different states of the lake throughout the study as the result of the irregular alternation between high and low rainfall periods, with similar water temperature values but with important variations in dissolved oxygen, chemical oxygen demand, water turbidity, electric conductivity, and water level. As a consequence, marked seasonal and interannual variations occurred in CH4 dissolved in water and CH4 fluxes from the lake. These temporal variations were best reflected by water temperature and depth of the Secchi disk, as a water turbidity estimation, which had a significant double correlation with CH4 dissolved in water. The mean CH4 fluxes values were 0.22 and 4.09 mg/m2/h for periods with low and high water turbidity, respectively. This work suggests that water temperature and turbidity measurements could serve as indicator parameters of the state of the lake and, therefore, of its behavior as either a CH4 source or sink.

ACS Style

Victoria S. Fusé; M. Eugenia Priano; Karen E. Williams; José Ignacio Gere; Sergio A. Guzmán; Roberto Gratton; M. Paula Juliarena. Temporal variation in methane emissions in a shallow lake at a southern mid latitude during high and low rainfall periods. Environmental Monitoring and Assessment 2016, 188, 590 .

AMA Style

Victoria S. Fusé, M. Eugenia Priano, Karen E. Williams, José Ignacio Gere, Sergio A. Guzmán, Roberto Gratton, M. Paula Juliarena. Temporal variation in methane emissions in a shallow lake at a southern mid latitude during high and low rainfall periods. Environmental Monitoring and Assessment. 2016; 188 (10):590.

Chicago/Turabian Style

Victoria S. Fusé; M. Eugenia Priano; Karen E. Williams; José Ignacio Gere; Sergio A. Guzmán; Roberto Gratton; M. Paula Juliarena. 2016. "Temporal variation in methane emissions in a shallow lake at a southern mid latitude during high and low rainfall periods." Environmental Monitoring and Assessment 188, no. 10: 590.

Journal article
Published: 01 August 2016 in Small Ruminant Research
Reads 0
Downloads 0
ACS Style

G.A. Amaral; D.B. David; José Ignacio Gere; Jean V. Savian; M.M. Kohmann; L.B. Nadin; F. Sánchez Chopa; C. Bayer; P.C.F. Carvalho. Methane emissions from sheep grazing pearl millet (Penissetum americanum (L.) Leeke) swards fertilized with increasing nitrogen levels. Small Ruminant Research 2016, 141, 118 -123.

AMA Style

G.A. Amaral, D.B. David, José Ignacio Gere, Jean V. Savian, M.M. Kohmann, L.B. Nadin, F. Sánchez Chopa, C. Bayer, P.C.F. Carvalho. Methane emissions from sheep grazing pearl millet (Penissetum americanum (L.) Leeke) swards fertilized with increasing nitrogen levels. Small Ruminant Research. 2016; 141 ():118-123.

Chicago/Turabian Style

G.A. Amaral; D.B. David; José Ignacio Gere; Jean V. Savian; M.M. Kohmann; L.B. Nadin; F. Sánchez Chopa; C. Bayer; P.C.F. Carvalho. 2016. "Methane emissions from sheep grazing pearl millet (Penissetum americanum (L.) Leeke) swards fertilized with increasing nitrogen levels." Small Ruminant Research 141, no. : 118-123.

Journal article
Published: 01 August 2014 in Animal Feed Science and Technology
Reads 0
Downloads 0
ACS Style

M.E. Priano; V.S. Fusé; J.I. Gere; A.M. Berkovic; K.E. Williams; Sergio A. Guzmán; R. Gratton; M.P. Juliarena. Strong differences in the CH4 emission from feces of grazing steers submitted to different feeding schedules. Animal Feed Science and Technology 2014, 194, 145 -150.

AMA Style

M.E. Priano, V.S. Fusé, J.I. Gere, A.M. Berkovic, K.E. Williams, Sergio A. Guzmán, R. Gratton, M.P. Juliarena. Strong differences in the CH4 emission from feces of grazing steers submitted to different feeding schedules. Animal Feed Science and Technology. 2014; 194 ():145-150.

Chicago/Turabian Style

M.E. Priano; V.S. Fusé; J.I. Gere; A.M. Berkovic; K.E. Williams; Sergio A. Guzmán; R. Gratton; M.P. Juliarena. 2014. "Strong differences in the CH4 emission from feces of grazing steers submitted to different feeding schedules." Animal Feed Science and Technology 194, no. : 145-150.

Journal article
Published: 01 June 2014 in Agriculture, Ecosystems & Environment
Reads 0
Downloads 0
ACS Style

Jean V. Savian; Armindo Barth Neto; Diego Bitencourt de David; Carolina Bremm; Radael Marinho Três Schons; Teresa Cristina Moraes Genro; Glaucia Azevedo Do Amaral; José Ignacio Gere; Concepta Margaret McManus; Cimélio Bayer; Paulo César De Faccio Carvalho. Grazing intensity and stocking methods on animal production and methane emission by grazing sheep: Implications for integrated crop–livestock system. Agriculture, Ecosystems & Environment 2014, 190, 112 -119.

AMA Style

Jean V. Savian, Armindo Barth Neto, Diego Bitencourt de David, Carolina Bremm, Radael Marinho Três Schons, Teresa Cristina Moraes Genro, Glaucia Azevedo Do Amaral, José Ignacio Gere, Concepta Margaret McManus, Cimélio Bayer, Paulo César De Faccio Carvalho. Grazing intensity and stocking methods on animal production and methane emission by grazing sheep: Implications for integrated crop–livestock system. Agriculture, Ecosystems & Environment. 2014; 190 ():112-119.

Chicago/Turabian Style

Jean V. Savian; Armindo Barth Neto; Diego Bitencourt de David; Carolina Bremm; Radael Marinho Três Schons; Teresa Cristina Moraes Genro; Glaucia Azevedo Do Amaral; José Ignacio Gere; Concepta Margaret McManus; Cimélio Bayer; Paulo César De Faccio Carvalho. 2014. "Grazing intensity and stocking methods on animal production and methane emission by grazing sheep: Implications for integrated crop–livestock system." Agriculture, Ecosystems & Environment 190, no. : 112-119.

Journal article
Published: 12 December 2013 in Agroforestry Systems
Reads 0
Downloads 0

We assessed the rates of methane uptake (CH4) by soils of different tree plantations and a control to provide information regarding potential greenhouse gas sequestration by tree plantations of pines, mixed deciduous species and eucalyptus in a natural grassland around 37S, 59W (Argentinean Pampa). A naturalized pasture was used as control. All sites had been agricultural and livestock lands. Each site was sampled three times from December 2012 to May 2013, using five static chambers randomly distributed across an area of ~100 m2 in each site. In the control, methane fluxes were very weak; both negative (uptake) and positive (emission) values were found. Below tree plantations, fluxes were always negative, with statistically significant intersite differences. The highest uptake rates were observed in the mixed deciduous plantation (~10 ng m−2 s−1), followed by pines and eucalyptus plantations. Intrasite differences associated with spatial variation were also found. A significant inverse correlation between CH4 uptake and soil water content was found in the pine and deciduous species plantations (R2 > 0.94, p

ACS Style

M. E. Priano; V. S. Fusé; José Ignacio Gere; A. M. Berkovic; K. E. Williams; Sergio A. Guzmán; R. Gratton; M. P. Juliarena. Tree plantations on a grassland region: effects on methane uptake by soils. Agroforestry Systems 2013, 88, 187 -191.

AMA Style

M. E. Priano, V. S. Fusé, José Ignacio Gere, A. M. Berkovic, K. E. Williams, Sergio A. Guzmán, R. Gratton, M. P. Juliarena. Tree plantations on a grassland region: effects on methane uptake by soils. Agroforestry Systems. 2013; 88 (1):187-191.

Chicago/Turabian Style

M. E. Priano; V. S. Fusé; José Ignacio Gere; A. M. Berkovic; K. E. Williams; Sergio A. Guzmán; R. Gratton; M. P. Juliarena. 2013. "Tree plantations on a grassland region: effects on methane uptake by soils." Agroforestry Systems 88, no. 1: 187-191.

Journal article
Published: 08 June 2012 in Animals
Reads 0
Downloads 0

The daily sample collection protocol of the sulphur hexafluoride (SF6) tracer technique for the estimation of methane (CH4) emissions from ruminants may not be practical under extensive grazing systems. Here, under controlled conditions, we evaluated extended periods of sampling as an alternative to daily sample collections. Eight rumen-fistulated cows were housed and fed lucerne silage to achieve common daily feed intakes of 6.4 kg dry matter per cow. Following SF6 permeation tube dosing, eight sampling lines were fitted to the breath collection harness, so that a common gas mix was available to each line. Half of the lines collected samples into PVC yokes using a modified capillary system as commonly used in New Zealand (NZL), and half collected samples into stainless steel cylinders using a ball-bearing flow restrictor as used in Argentina (ARG), all within a 10-day time frame, either daily, across two consecutive 5-day periods or across one 10-day period (in duplicate). The NZL system had greater sampling success (97.3 vs. 79.5%) and yielded more consistent CH4 emission estimates than the ARG system. Emission estimates from NZL daily, NZL 5-day and NZL 10-day samplings were 114, 110 and 111 g d−1, respectively. Extended sample collection protocol may be feasible, but definitive evaluation of this alternative as well as sample collection systems is required under grazing situations before a decision on recommendation can be made.

ACS Style

César Pinares-Patiño; José Gere; Karen Williams; Roberto Gratton; Paula Juliarena; German Molano; Sarah MacLean; Edgar Sandoval; Grant Taylor; John Koolaard. Extending the Collection Duration of Breath Samples for Enteric Methane Emission Estimation Using the SF6 Tracer Technique. Animals 2012, 2, 275 -287.

AMA Style

César Pinares-Patiño, José Gere, Karen Williams, Roberto Gratton, Paula Juliarena, German Molano, Sarah MacLean, Edgar Sandoval, Grant Taylor, John Koolaard. Extending the Collection Duration of Breath Samples for Enteric Methane Emission Estimation Using the SF6 Tracer Technique. Animals. 2012; 2 (2):275-287.

Chicago/Turabian Style

César Pinares-Patiño; José Gere; Karen Williams; Roberto Gratton; Paula Juliarena; German Molano; Sarah MacLean; Edgar Sandoval; Grant Taylor; John Koolaard. 2012. "Extending the Collection Duration of Breath Samples for Enteric Methane Emission Estimation Using the SF6 Tracer Technique." Animals 2, no. 2: 275-287.

Journal article
Published: 08 June 2012 in Animals
Reads 0
Downloads 0

Understanding the impact of changing pasture composition on reducing emissions of GHGs in dairy grazing systems is an important issue to mitigate climate change. The aim of this study was to estimate daily CH4 emissions of dairy cows grazing two mixed pastures with contrasting composition of grasses and legumes: L pasture with 60% legumes on Dry Matter (DM) basis and G pasture with 75% grasses on DM basis. Milk production and CH4 emissions were compared over two periods of two weeks during spring using eight lactating Holstein cows in a 2 × 2 Latin square design. Herbage organic matter intake (HOMI) was estimated by chromic oxide dilution and herbage organic matter digestibility (OMD) was estimated by faecal index. Methane emission was estimated by using the sulfur hexafluoride (SF6) tracer technique adapted to collect breath samples over 5-day periods. OMD (0.71) and HOMI (15.7 kg OM) were not affected by pasture composition. Milk production (20.3 kg/d), milk fat yield (742 g/d) and milk protein yield (667 g/d) were similar for both pastures. This may be explained by the high herbage allowance (30 kg DM above 5 cm/cow) which allowed the cows to graze selectively, in particular in grass sward. Similarly, methane emission expressed as absolute value (368 g/d or 516 L/d) or expressed as methane yield (6.6% of Gross Energy Intake (GEI)) was not affected by treatments. In conclusion, at high herbage allowance, the quality of the diet selected by grazing cows did not differ between pastures rich in legumes or rich in grasses, and therefore there was no effect on milk or methane production.

ACS Style

Yoana Dini; José Gere; Carolina Briano; Martin Manetti; Paula Juliarena; Valentín Picasso; Roberto Gratton; Laura Astigarraga. Methane Emission and Milk Production of Dairy Cows Grazing Pastures Rich in Legumes or Rich in Grasses in Uruguay. Animals 2012, 2, 288 -300.

AMA Style

Yoana Dini, José Gere, Carolina Briano, Martin Manetti, Paula Juliarena, Valentín Picasso, Roberto Gratton, Laura Astigarraga. Methane Emission and Milk Production of Dairy Cows Grazing Pastures Rich in Legumes or Rich in Grasses in Uruguay. Animals. 2012; 2 (2):288-300.

Chicago/Turabian Style

Yoana Dini; José Gere; Carolina Briano; Martin Manetti; Paula Juliarena; Valentín Picasso; Roberto Gratton; Laura Astigarraga. 2012. "Methane Emission and Milk Production of Dairy Cows Grazing Pastures Rich in Legumes or Rich in Grasses in Uruguay." Animals 2, no. 2: 288-300.

Original articles
Published: 01 June 2008 in New Zealand Journal of Agricultural Research
Reads 0
Downloads 0

We report the first measurements of methane emitted by cattle of the Argentinean beef system, one of the largest in the world. Special care was taken to keep the animals under production conditions typical of the Pampa, the main livestock region of the country. Therefore, we applied the SF6 tracer technique to 20 young Aberdeen Angus steers randomly chosen in a commercial farm, in which paddocks they were left to graze. The live‐weight change of the animals, the herbage allowance and quality were followed during the research. The magnitudes varied significantly throughout the experiment (which included two separate periods of time, the first during December 2005 and the second in February‐March 2006) and from paddock to paddock. In spite of these differences, the average daily methane emissions per head rarely depart from 170 g/day However, larger variations were observed in the methane yield and, specially, in the methane em itted per weight gained. The work was also useful to analyse some technical features of importance in making the technique suitable for growing steers under the extensive condition prevailing in the Argentinean beef system.

ACS Style

N. Barbaro; J. Gere; R. Gratton; R. Rubio; K. Williams. First measurements of methane emitted by grazing cattle of the Argentinean beef system. New Zealand Journal of Agricultural Research 2008, 51, 209 -219.

AMA Style

N. Barbaro, J. Gere, R. Gratton, R. Rubio, K. Williams. First measurements of methane emitted by grazing cattle of the Argentinean beef system. New Zealand Journal of Agricultural Research. 2008; 51 (2):209-219.

Chicago/Turabian Style

N. Barbaro; J. Gere; R. Gratton; R. Rubio; K. Williams. 2008. "First measurements of methane emitted by grazing cattle of the Argentinean beef system." New Zealand Journal of Agricultural Research 51, no. 2: 209-219.