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Amr Abd El-Wahab
Institute for Animal Nutrition, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, D-30173 Hannover, Germany

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Journal article
Published: 27 August 2021 in Animals
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Insect larvae meal has been proposed as a sustainable protein source for animal diets. This study aimed to provide information on including black soldier fly larvae meal (BSFL; Hermetia illucens) in comparison to poultry meal (PM) in the canine diet with regard to digestibility and fecal characteristics. In light of this trend, the levels of PM or BSFL meal were added to replace about 30% of dry matter of the basic extruded diet. Six Beagle dogs (BW 9.64 kg) were included in a cross-over experiment. Dogs fed a BSFL meal-based diet showed higher (p< 0.05) apparent protein digestibility (82.3%) compared to those offered a PM-based diet (80.5%). Apparent digestibility for fat was higher (p< 0.05) in groups fed the BSFL meal-based diet (94.5%) compared to those offered the PM-based diet (91.6%). The fecal consistency scores for dogs fed both diets were within an acceptable range (well-formed and firm). Fecal dry matter content was higher (p< 0.05) for dogs fed the PM-based diet (33.0%) compared to those offered the BSFL meal-based diet (28.0%). Including BSFL meal in dog food can be an appropriate source of protein without any negative effects on nutrient digestibility and fecal quality.

ACS Style

Amr Abd El-Wahab; Laura Meyer; Mareike Kölln; Bussarakam Chuppava; Volker Wilke; Christian Visscher; Josef Kamphues. Insect Larvae Meal (Hermetia illucens) as a Sustainable Protein Source of Canine Food and Its Impacts on Nutrient Digestibility and Fecal Quality. Animals 2021, 11, 2525 .

AMA Style

Amr Abd El-Wahab, Laura Meyer, Mareike Kölln, Bussarakam Chuppava, Volker Wilke, Christian Visscher, Josef Kamphues. Insect Larvae Meal (Hermetia illucens) as a Sustainable Protein Source of Canine Food and Its Impacts on Nutrient Digestibility and Fecal Quality. Animals. 2021; 11 (9):2525.

Chicago/Turabian Style

Amr Abd El-Wahab; Laura Meyer; Mareike Kölln; Bussarakam Chuppava; Volker Wilke; Christian Visscher; Josef Kamphues. 2021. "Insect Larvae Meal (Hermetia illucens) as a Sustainable Protein Source of Canine Food and Its Impacts on Nutrient Digestibility and Fecal Quality." Animals 11, no. 9: 2525.

Supplement article
Published: 07 July 2021 in Journal of Animal Physiology and Animal Nutrition
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Despite quite similar contents of starch and crude fibre of wheat and rye, the unique non-starch-polysaccharide fraction of rye (e.g. high levels of arabinoxylans and fructans) might have an impact on physicochemical properties of the digesta in pigs. Forty pigs (age: 46.8 ± 5.28 days; bodyweight: 16.1 ± 4.13 kg) were divided into four treatment groups. During four weeks, the pigs received diets consisting of wheat and/or rye, barley, soy, potato protein and a mineral supplement. The sum of wheat and rye was 69% in all diets, whereby the compound feed of each group was characterized by a different ratio (%) of wheat/rye (69/0; 46/23; 23/46; 0/69, respectively). In the stomach, ‘doughballs’ occurred more frequently with increasing dietary rye levels (9/10; 69% rye). With higher DM content and extract-viscosity of gastric digesta, the stomach emptying tended to be retarded in rye groups. Compared to the control group (69% wheat), maximum dietary rye levels (69%) resulted in significantly higher concentrations of lactic acid in digesta of the stomach and small intestine. With increasing lactic acid concentrations, the pH tended to be lower in small intestinal digesta. With an intensified formation of lactic acid, effects against Gram-negative bacteria, for example Salmonella, can be expected. Moreover, because of higher viscosity and the retarded stomach emptying, there could be advantages of including rye in compound feeds when a longer lasting satiety is intended, for example when feeding pregnant sows (regularly fed restrictively).

ACS Style

Volker Wilke; Richard Grone; Andreas von Felde; Amr Abd El‐Wahab; Petra Wolf; Josef Kamphues. Effects of increasing dietary rye levels on physicochemical characteristics of digesta and its impact on stomach emptying as well as the formation of ‘doughballs’ in stomachs of young pigs. Journal of Animal Physiology and Animal Nutrition 2021, 1 .

AMA Style

Volker Wilke, Richard Grone, Andreas von Felde, Amr Abd El‐Wahab, Petra Wolf, Josef Kamphues. Effects of increasing dietary rye levels on physicochemical characteristics of digesta and its impact on stomach emptying as well as the formation of ‘doughballs’ in stomachs of young pigs. Journal of Animal Physiology and Animal Nutrition. 2021; ():1.

Chicago/Turabian Style

Volker Wilke; Richard Grone; Andreas von Felde; Amr Abd El‐Wahab; Petra Wolf; Josef Kamphues. 2021. "Effects of increasing dietary rye levels on physicochemical characteristics of digesta and its impact on stomach emptying as well as the formation of ‘doughballs’ in stomachs of young pigs." Journal of Animal Physiology and Animal Nutrition , no. : 1.

Journal article
Published: 13 February 2021 in Animals
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Cereals with low environmental input like rye and animal by-products which cannot be used for human food like feather meal are receiving growing interest as sustainable feed sources. Thus, eight Beagle dogs were included in a 4 × 4 Latin Square design and received a vegetarian basic diet or the same diets supplemented with hydrolyzed feather meal (2.7%) and either 20.1% of corn meal, 60.4% of fermented rye or 20.1% of rye as is basis (moisture content of the diets about 42%). Compared to other groups the dry matter (DM) content of feces from dogs fed the basic diet was higher (30.0%, p < 0.05), while dogs fed the basic diet + rye had the lowest DM-content (26.5%, p < 0.05). However, the fecal scores were considered to be within an acceptable range (well-formed and firm). Starch digestibility was lower (p < 0.05) for dogs fed the basic diet + corn meal. The dogs showed a high and identical acceptance (scoring of food intake) of the experimental diets. As a comparable quality of feces and a high nutrient digestibility were observed when rye was used in the experimental diets—it can be considered an alternative carbohydrate source in dog foods.

ACS Style

Amr El-Wahab; Volker Wilke; Richard Grone; Christian Visscher. Nutrient Digestibility of a Vegetarian Diet with or without the Supplementation of Feather Meal and Either Corn Meal, Fermented Rye or Rye and Its Effect on Fecal Quality in Dogs. Animals 2021, 11, 496 .

AMA Style

Amr El-Wahab, Volker Wilke, Richard Grone, Christian Visscher. Nutrient Digestibility of a Vegetarian Diet with or without the Supplementation of Feather Meal and Either Corn Meal, Fermented Rye or Rye and Its Effect on Fecal Quality in Dogs. Animals. 2021; 11 (2):496.

Chicago/Turabian Style

Amr El-Wahab; Volker Wilke; Richard Grone; Christian Visscher. 2021. "Nutrient Digestibility of a Vegetarian Diet with or without the Supplementation of Feather Meal and Either Corn Meal, Fermented Rye or Rye and Its Effect on Fecal Quality in Dogs." Animals 11, no. 2: 496.

Journal article
Published: 24 October 2020 in Processes
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Improving the hygienic status of feed ingredients by biotechnological processes as fermentation is of the greatest concern. This preliminary study aimed to investigate whether there are relevant effects of fermented liquid feed (FLF) on the survival of potential pathogens in vitro. The feed (fresh basis) consisted of 50% rye, 30% rapeseed extracted meal, 10% barley and 10% wheat. Glass bottles were filled about 14.1 g water (38 °C) containing the diluted starter culture and feed (8.81 g). Fermentation led to high levels of lactate (5–7% of dry matter), low pH values (Salmonella enterica serovar Typhimurium, Escherichia coli and Clostridium perfringens after 6 h of controlled fermentation, was significantly reduced (10 CFU/g). The counts of Candida krusei in FLF at 3 h and 6 h post inoculation remained almost unchanged regardless of the incubation time. Even adding sodium-benzoate at a concentration of up to 0.25% in the liquid feed did not reduce the survival of C.krusei during fermentation. Based on this in vitro study, feeding of FLF seems a promising strategy to reduce pathogen transmission but has to be confirmed on natural feeds by pathogens for increasing the hygienic properties.

ACS Style

Sebastian Bunte; Birgit Keller; Bussarakam Chuppava; Josef Kamphues; Christian Visscher; Amr Abd El-Wahab. Influence of Fermented Diets on In Vitro Survival Rate of Some Artificially Inoculated Pathogens—A Preliminary Study. Processes 2020, 8, 1345 .

AMA Style

Sebastian Bunte, Birgit Keller, Bussarakam Chuppava, Josef Kamphues, Christian Visscher, Amr Abd El-Wahab. Influence of Fermented Diets on In Vitro Survival Rate of Some Artificially Inoculated Pathogens—A Preliminary Study. Processes. 2020; 8 (11):1345.

Chicago/Turabian Style

Sebastian Bunte; Birgit Keller; Bussarakam Chuppava; Josef Kamphues; Christian Visscher; Amr Abd El-Wahab. 2020. "Influence of Fermented Diets on In Vitro Survival Rate of Some Artificially Inoculated Pathogens—A Preliminary Study." Processes 8, no. 11: 1345.

Journal article
Published: 22 October 2020 in Microorganisms
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Public health concerns and the potential for food-borne zoonotic transmission have made Salmonella a subject of surveillance programs in food-producing animals. Forty-two piglets (25 d of age and initially 7.48 kg) were used in a 28 d infection period to evaluate the effects of a high proportion of rye on reducing Salmonella Typhimurium. Piglets were divided into two diet groups: control diet (wheat 69%) and experimental diet (rye 69%). After a one-week adaptation period, all piglets were orally infected with Salmonella Typhimurium (107 log CFU/mL; 2mL/pig). Salmonella in fecal shedding were evaluated at day 1, 3, 5, 7 and then weekly after infection. At the end of the experimental period (at day 28 after infection), the piglets were euthanized to sample feces, cecal digesta contents and ileocecal lymph nodes to determine the bacterial counts of Salmonella. The results suggest that the bacterial counts in the experimental group fed rye diets showed evidence of reducing Salmonella fecal shedding from day 14 onwards and decreasing the number of Salmonella in cecal digesta. However, the translocation of Salmonella in ileocecal lymph nodes was not affected. Furthermore, feed intake, weight gain and feed conversion did not differ between the groups (p > 0.05).

ACS Style

Bussarakam Chuppava; Volker Wilke; Clara Hartung; Amr El-Wahab; Richard Grone; Andreas Von Felde; Josef Kamphues; Christian Visscher. Effect of a High Proportion of Rye in Compound Feed for Reduction of Salmonella Typhimurium in Experimentally Infected Young Pigs. Microorganisms 2020, 8, 1629 .

AMA Style

Bussarakam Chuppava, Volker Wilke, Clara Hartung, Amr El-Wahab, Richard Grone, Andreas Von Felde, Josef Kamphues, Christian Visscher. Effect of a High Proportion of Rye in Compound Feed for Reduction of Salmonella Typhimurium in Experimentally Infected Young Pigs. Microorganisms. 2020; 8 (11):1629.

Chicago/Turabian Style

Bussarakam Chuppava; Volker Wilke; Clara Hartung; Amr El-Wahab; Richard Grone; Andreas Von Felde; Josef Kamphues; Christian Visscher. 2020. "Effect of a High Proportion of Rye in Compound Feed for Reduction of Salmonella Typhimurium in Experimentally Infected Young Pigs." Microorganisms 8, no. 11: 1629.

Journal article
Published: 19 September 2020 in Sustainability
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Rye could offer diverse benefits in terms of sustainability if it could replace parts of the main cereals, corn and wheat, in broiler diets. A total of 256 broilers, Ross 308, were randomly allocated into 32 pens. From day 14 till day 42, the birds were divided into four feeding groups (eight replicates each). The control group received a conventional finisher diet “control”, whereas in the other groups, a pelleted supplementary feed was offered (SFI to corn and SFII to rye), to which crushed corn (SFI-Corn) or squashed rye (SFII-Rye) was added. The fourth group received a mixture of 50% SFI-Corn and 50% SFII-Rye. The cereal level was increased weekly (5%, 10%, 20%, 30%) at the expense of the supplementary feeds. No significant effects were observed for body weight at d 42 and excreta viscosity between all groups. Overall, foot pad health was excellent. Compared to the control group, birds fed SFI-Corn displayed a significant increase in gizzard relative weight, whereas, in contrast to all other groups, ileal villus height was significantly lower. In conclusion, feeding SFI-Corn or SFII-Rye diets had no negative influences on performance, litter quality and digesta viscosity, whereas SFI-Corn partially affected ileal morphology.

ACS Style

Amr El-Wahab; Jan Lingens; Bussarakam Chuppava; Marwa Ahmed; Ahmed Osman; Marion Langeheine; Ralph Brehm; Venja Taube; Richard Grone; Andreas Von Felde; Josef Kamphues; Christian Visscher. Impact of Rye Inclusion in Diets for Broilers on Performance, Litter Quality, Foot Pad Health, Digesta Viscosity, Organ Traits and Intestinal Morphology. Sustainability 2020, 12, 7753 .

AMA Style

Amr El-Wahab, Jan Lingens, Bussarakam Chuppava, Marwa Ahmed, Ahmed Osman, Marion Langeheine, Ralph Brehm, Venja Taube, Richard Grone, Andreas Von Felde, Josef Kamphues, Christian Visscher. Impact of Rye Inclusion in Diets for Broilers on Performance, Litter Quality, Foot Pad Health, Digesta Viscosity, Organ Traits and Intestinal Morphology. Sustainability. 2020; 12 (18):7753.

Chicago/Turabian Style

Amr El-Wahab; Jan Lingens; Bussarakam Chuppava; Marwa Ahmed; Ahmed Osman; Marion Langeheine; Ralph Brehm; Venja Taube; Richard Grone; Andreas Von Felde; Josef Kamphues; Christian Visscher. 2020. "Impact of Rye Inclusion in Diets for Broilers on Performance, Litter Quality, Foot Pad Health, Digesta Viscosity, Organ Traits and Intestinal Morphology." Sustainability 12, no. 18: 7753.

Journal article
Published: 06 September 2020 in Microorganisms
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Anthropomorphism of dogs has affected feeding and the choice of components present in diets for dogs. Conflicting trends are present: raw or vegetarian appear more prevalent. Animal-derived proteins seem to have unfavourable impacts on intestinal microflora by decreasing the presence of Bacteroidetes. This preliminary study evaluates whether effects of diets with animal proteins on intestinal microbiota can be compensated by the addition of certain carbohydrates to dog diet. Eight female beagles were included in a cross-over study and fed a vegetarian diet or the same diet supplemented with feather meal (2.7%) and either 20% of cornmeal, fermented or non-fermented rye (moisture content of the diets about 42%). A 16S rRNA gene amplification was performed within the hypervariable region V4 on faecal samples and sequenced with the Illumina MiSeq platform. The Firmicutes/Bacteroidetes ratio tended to shift to the advantage of Firmicutes when feather meal and cornmeal were added (Firmicutes/Bacteroidetes ratio of 5.12 compared to 2.47 when offered the vegetarian diet) and tended to switch back to the advantage of Bacteroidetes if rye: fermented (2.17) or not (1.03) was added. The addition of rye might have the potential to compensate possible unfavourable effects of diets with animal proteins on intestinal microbiota of dogs.

ACS Style

Julia Hankel; Amr Abd El-Wahab; Richard Grone; Birgit Keller; Eric Galvez; Till Strowig; Christian Visscher. Faecal Microbiota of Dogs Offered a Vegetarian Diet with or without the Supplementation of Feather Meal and either Cornmeal, Rye or Fermented Rye: A Preliminary Study. Microorganisms 2020, 8, 1363 .

AMA Style

Julia Hankel, Amr Abd El-Wahab, Richard Grone, Birgit Keller, Eric Galvez, Till Strowig, Christian Visscher. Faecal Microbiota of Dogs Offered a Vegetarian Diet with or without the Supplementation of Feather Meal and either Cornmeal, Rye or Fermented Rye: A Preliminary Study. Microorganisms. 2020; 8 (9):1363.

Chicago/Turabian Style

Julia Hankel; Amr Abd El-Wahab; Richard Grone; Birgit Keller; Eric Galvez; Till Strowig; Christian Visscher. 2020. "Faecal Microbiota of Dogs Offered a Vegetarian Diet with or without the Supplementation of Feather Meal and either Cornmeal, Rye or Fermented Rye: A Preliminary Study." Microorganisms 8, no. 9: 1363.

Journal article
Published: 24 July 2020 in Animals
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The aim of the present study was to evaluate the effects of feed particle size and flooring designs on organ traits, performance and pododermatitis in broilers. A total of 480 broilers (Ross 308) of both sexes were randomly assigned to two feeding groups (finely or coarsely ground pelleted diets; with addition of 5% to 10% intact wheat in coarsely diets) and four different housing systems (litter; litter with floor heating; partially or fully slatted floor) with three subgroups each. A coarse diet increased the final gizzard and pancreas weights (p < 0.001) while decreasing the risk of Isthmus gastrici dilatation compared to a fine diet (p < 0.001). Broilers fed a coarse diet displayed an increased final body weight (p = 0.023) and led to a favourable feed conversion ratio. Final body weight was the highest (p < 0.001) for birds housed on partially or fully slatted floor. Housing birds on litter with floor heating showed the lowest pododermatitis scoring (p < 0.001). It seems to be favourable to use coarse diets for organ development, whereas slatted floors seem to foster enlargement of the Isthmus gastrici. Increasing growth performance was possible both when using coarse diets or slatted floors.

ACS Style

Amr Abd El-Wahab; Jan-Philip Kriewitz; Julia Hankel; Bussarakam Chuppava; Christine Ratert; Venja Taube; Christian Visscher; Josef Kamphues. The Effects of Feed Particle Size and Floor Type on the Growth Performance, GIT Development, and Pododermatitis in Broiler Chickens. Animals 2020, 10, 1256 .

AMA Style

Amr Abd El-Wahab, Jan-Philip Kriewitz, Julia Hankel, Bussarakam Chuppava, Christine Ratert, Venja Taube, Christian Visscher, Josef Kamphues. The Effects of Feed Particle Size and Floor Type on the Growth Performance, GIT Development, and Pododermatitis in Broiler Chickens. Animals. 2020; 10 (8):1256.

Chicago/Turabian Style

Amr Abd El-Wahab; Jan-Philip Kriewitz; Julia Hankel; Bussarakam Chuppava; Christine Ratert; Venja Taube; Christian Visscher; Josef Kamphues. 2020. "The Effects of Feed Particle Size and Floor Type on the Growth Performance, GIT Development, and Pododermatitis in Broiler Chickens." Animals 10, no. 8: 1256.

Journal article
Published: 01 April 2020 in The Pakistan Veterinary Journal
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ACS Style

Amr Abd El-Wahab. Effects of Yeast Addition to the Diet of Japanese Quails on Growth Performance, Selected Serum Parameters and Intestinal Morphology as well as Pathogens Reduction. The Pakistan Veterinary Journal 2020, 40, 219 -223.

AMA Style

Amr Abd El-Wahab. Effects of Yeast Addition to the Diet of Japanese Quails on Growth Performance, Selected Serum Parameters and Intestinal Morphology as well as Pathogens Reduction. The Pakistan Veterinary Journal. 2020; 40 (2):219-223.

Chicago/Turabian Style

Amr Abd El-Wahab. 2020. "Effects of Yeast Addition to the Diet of Japanese Quails on Growth Performance, Selected Serum Parameters and Intestinal Morphology as well as Pathogens Reduction." The Pakistan Veterinary Journal 40, no. 2: 219-223.

Original research article
Published: 08 November 2019 in Frontiers in Microbiology
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Carriage of resistant bacteria and spread of antimicrobial resistance (AMR) in the environment through animal manure pose a potential risk for transferring AMR from poultry and poultry products to the human population. Managing this risk is becoming one of the most important challenges in livestock farming. This study focused on monitoring the prevalence of multi-drug resistance (MDR) bacteria and development of AMR depending on flooring. In two experiments (2 × 15,000 birds), broilers were always divided in two different stables. In the control group, the entire floor pen was covered with litter material and in the experimental group, the flooring system was partly modified by installing elevated slat platforms equipped with water lines and feed pans. Over the whole fattening period, excreta and manure samples were taken (days 2, 22, and 32). In total, 828 commensal E. coli isolates were collected. The development and prevalence of resistance against four different antibiotic classes (quinolones, β-lactams, tetracyclines, and sulfonamides) were examined by using broth microdilution. At the end of the trials, the amount of manure per square metre was twice as high below the elevated platforms compared to the control group. Approximately 58% of E. coli isolates from excreta showed resistance against at least one antibacterial agent at day 2. During and at the end of the fattening period, resistant E. coli isolates at least against one of the four antibacterial agents were observed in excreta (46 and 46%, respectively), and manure samples (14 and 42%, respectively), despite the absence of antibacterial agent usage. In spite of less contact to manure in the experimental group, the prevalence of resistant E. coli isolates was significantly higher. Birds preferred the elevated areas which inevitably led to a local high population density. Animal-to-animal contact seems to be more important for spreading antimicrobial resistant bacteria than contact to the litter-excreta mixture. Therefore, attractive areas in poultry housing inducing crowding of animals might foster transmission of AMR. In poultry farming, enrichment is one of the most important aims for future systems. Consequently, there is a need for keeping birds not carrying resistant bacteria at the start of life.

ACS Style

Bussarakam Chuppava; Birgit Keller; Amr Abd El-Wahab; Christian Sürie; Christian Visscher. Resistance Reservoirs and Multi-Drug Resistance of Commensal Escherichia coli From Excreta and Manure Isolated in Broiler Houses With Different Flooring Designs. Frontiers in Microbiology 2019, 10, 2633 .

AMA Style

Bussarakam Chuppava, Birgit Keller, Amr Abd El-Wahab, Christian Sürie, Christian Visscher. Resistance Reservoirs and Multi-Drug Resistance of Commensal Escherichia coli From Excreta and Manure Isolated in Broiler Houses With Different Flooring Designs. Frontiers in Microbiology. 2019; 10 ():2633.

Chicago/Turabian Style

Bussarakam Chuppava; Birgit Keller; Amr Abd El-Wahab; Christian Sürie; Christian Visscher. 2019. "Resistance Reservoirs and Multi-Drug Resistance of Commensal Escherichia coli From Excreta and Manure Isolated in Broiler Houses With Different Flooring Designs." Frontiers in Microbiology 10, no. : 2633.

Fundamental studies
Published: 15 September 2019 in Journal of the World Aquaculture Society
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This study tested a choice feeding model for Nile tilapia that allowed the selection of a higher or lower protein content in the diet depending on water temperature. Nile tilapia were reared in twelve 200‐L tanks for 63 days with 12 fish (body weight 38 g/fish at start) per tank. Two temperatures (22 or 30°C) and two color combinations (yellow and red each) for a two‐component diet containing 30% (low) and a 38% (high) crude protein content based on dry matter were used. High water temperature (30 vs. 22°C) resulted in a significantly higher feed rate (1.93 ± 0.123 and 1.26 ± 0.100%, respectively), body weight gain (39.3 ± 4.29 and 4.75 ± 0.66 g, respectively), final body weight (70.3 ± 9.31 and 43.0 ± 7.49 g, respectively), and feed efficiency (55.4 ± 6.09 and 14.6 ± 2.86%, respectively), as well as protein efficiency ratio (1.687 ± 0.186 and 0.450 ± 0.087, respectively), regardless of color codes. No significant differences of color codes on growth parameters, body composition, and fatty acid profile were seen. Higher water temperature (30 vs. 22°C) only had an effect on percentage‐specific fatty acids of total fatty acids of the whole body (biggest difference: C16:0, 20.5 ± 1.00 and 17.4 ± 1.11%, respectively). Therefore, water temperature clearly influences growth and fatty acid composition of the body.

ACS Style

Amr Abd El‐Wahab; Christian Visscher; Felix Teitge; Dieter Steinhagen. Choice preference of diets with different protein levels depending on water temperature in Nile tilapia. Journal of the World Aquaculture Society 2019, 51, 512 -526.

AMA Style

Amr Abd El‐Wahab, Christian Visscher, Felix Teitge, Dieter Steinhagen. Choice preference of diets with different protein levels depending on water temperature in Nile tilapia. Journal of the World Aquaculture Society. 2019; 51 (2):512-526.

Chicago/Turabian Style

Amr Abd El‐Wahab; Christian Visscher; Felix Teitge; Dieter Steinhagen. 2019. "Choice preference of diets with different protein levels depending on water temperature in Nile tilapia." Journal of the World Aquaculture Society 51, no. 2: 512-526.

Journal article
Published: 06 August 2019 in Journal of Animal Physiology and Animal Nutrition
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The objective of the present study was to evaluate the potential effect of dietary calcium butyrate on growth performance, carcass traits and gut health in Japanese quails. In total, 320 one-day-old Japanese quails were randomly assigned to 4 equal treatments, with 8 replicates of 10 Japanese quails, for 4 weeks. The Japanese quails in control treatment were fed control diet whereas in the other treatments the Japanese quails were fed diet supplemented with calcium butyrate at 0.3, 0.5 and 0.7 g/kg diet. Data concerning performance measurements were recorded weekly. In addition, eight Japanese quails (one/replicate) from each treatment were selected randomly for serum collection to measure pro- and anti-inflammatory cytokines. Pooled faecal samples from each replicate of each treatment were also collected at three time points (0, 2 and 4 weeks) for count E. coli and C. perfringens. The results showed that after 7 days of the experimental period, Japanese quails fed calcium butyrate supplemented diet at 0.7 g/kg showed a greater (p < .05) body weight and a favourable (p < .05) feed conversion ratio than the other treatments. Moreover, serum superoxide dismutase and catalase activities were increased (p < .05) in Japanese quails fed calcium butyrate supplemented diet at 0.7 g/kg. Calcium butyrate supplementation at 0.7 g/kg was associated with reduction (p < .05) in TNF-α, IL-6 and IL1-β, while IL-10 was increased (p < .05). In addition, after 2 weeks of calcium butyrate supplementation, a reduction (p < .05) in E. coli and C. perfringens counts was observed in excreta of Japanese quails fed 0.5 and 0.7 g calcium butyrate/kg diets. It is concluded that calcium butyrate supplementation improves body weight gain, reduces E. coli and C. perfringens counts and has anti-inflammatory/anti-oxidant effect in Japanese quails.

ACS Style

Amr Abd El‐Wahab; Rania E. Mahmoud; Marwa F. E. Ahmed; Mohamed F. Salama. Effect of dietary supplementation of calcium butyrate on growth performance, carcass traits, intestinal health and pro‐inflammatory cytokines in Japanese quails. Journal of Animal Physiology and Animal Nutrition 2019, 103, 1768 -1775.

AMA Style

Amr Abd El‐Wahab, Rania E. Mahmoud, Marwa F. E. Ahmed, Mohamed F. Salama. Effect of dietary supplementation of calcium butyrate on growth performance, carcass traits, intestinal health and pro‐inflammatory cytokines in Japanese quails. Journal of Animal Physiology and Animal Nutrition. 2019; 103 (6):1768-1775.

Chicago/Turabian Style

Amr Abd El‐Wahab; Rania E. Mahmoud; Marwa F. E. Ahmed; Mohamed F. Salama. 2019. "Effect of dietary supplementation of calcium butyrate on growth performance, carcass traits, intestinal health and pro‐inflammatory cytokines in Japanese quails." Journal of Animal Physiology and Animal Nutrition 103, no. 6: 1768-1775.

Journal article
Published: 15 April 2019 in Journal of Applied Sciences
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ACS Style

Abeer Aziza; Amr Abd El-Wahab. Impact of Partial Replacing of Dietary Fish Meal by Different Protein Sources on the Growth Performance of Nile Tilapia (Oreochromis niloticus) and Whole Body Composition. Journal of Applied Sciences 2019, 19, 384 -391.

AMA Style

Abeer Aziza, Amr Abd El-Wahab. Impact of Partial Replacing of Dietary Fish Meal by Different Protein Sources on the Growth Performance of Nile Tilapia (Oreochromis niloticus) and Whole Body Composition. Journal of Applied Sciences. 2019; 19 (5):384-391.

Chicago/Turabian Style

Abeer Aziza; Amr Abd El-Wahab. 2019. "Impact of Partial Replacing of Dietary Fish Meal by Different Protein Sources on the Growth Performance of Nile Tilapia (Oreochromis niloticus) and Whole Body Composition." Journal of Applied Sciences 19, no. 5: 384-391.

Journal article
Published: 13 September 2018 in International Journal of Environmental Research and Public Health
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Gaining knowledge about the spread of resistance against antibacterial agents is a primary challenge in livestock farming. The purpose of this study was to test the effect of double antibiotic treatment (at days 10–14 and days 26–30) with enrofloxacin or solely environmental exposition (identical times, directly into the litter) on resistance against antibacterial agents in commensal Escherichia coli in comparison with the control (without treatment), depending on different flooring. A total of 720 Big 6 turkeys participated in three trials. Four different flooring designs were examined: An entire floor pen covered with litter, a floor pen with heating, a partially slatted flooring including 50% littered area, and a fully slatted flooring with a sand bath. A total of 864 Escherichia coli isolates were obtained from cloacal swabs and poultry manure samples at days 2, 9, 15, 21, and 35. The broth microdilution method (MIC) was used to determine the resistance of isolates to enrofloxacin and ampicillin. A double antibiotic treatment with enrofloxacin reduced the proportion of susceptible Escherichia coli isolates significantly in all flooring designs. Simulation of water losses had no significant effect, nor did the flooring design. Ampicillin-resistant isolates were observed, despite not using ampicillin.

ACS Style

Bussarakam Chuppava; Birgit Keller; Amr Abd El-Wahab; Jessica Meißner; Manfred Kietzmann; Christian Visscher. Resistance of Escherichia coli in Turkeys after Therapeutic or Environmental Exposition with Enrofloxacin Depending on Flooring. International Journal of Environmental Research and Public Health 2018, 15, 1993 .

AMA Style

Bussarakam Chuppava, Birgit Keller, Amr Abd El-Wahab, Jessica Meißner, Manfred Kietzmann, Christian Visscher. Resistance of Escherichia coli in Turkeys after Therapeutic or Environmental Exposition with Enrofloxacin Depending on Flooring. International Journal of Environmental Research and Public Health. 2018; 15 (9):1993.

Chicago/Turabian Style

Bussarakam Chuppava; Birgit Keller; Amr Abd El-Wahab; Jessica Meißner; Manfred Kietzmann; Christian Visscher. 2018. "Resistance of Escherichia coli in Turkeys after Therapeutic or Environmental Exposition with Enrofloxacin Depending on Flooring." International Journal of Environmental Research and Public Health 15, no. 9: 1993.

Journal article
Published: 15 June 2018 in Journal of Animal and Feed Sciences
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The aim of this study was to evaluate potential influences of different dietary protein sources on performance, litter quality and health of foot pads in broilers. In total, 160 one-day-old chickens were divided into four dietary groups at day 8. Four different diets were prepared as follows: the...

ACS Style

Amr Abd El-Wahab; C. Visscher; J. Kamphues. Impact of different dietary protein sources on performance, litter quality and foot pad dermatitis in broilers. Journal of Animal and Feed Sciences 2018, 27, 148 -154.

AMA Style

Amr Abd El-Wahab, C. Visscher, J. Kamphues. Impact of different dietary protein sources on performance, litter quality and foot pad dermatitis in broilers. Journal of Animal and Feed Sciences. 2018; 27 (2):148-154.

Chicago/Turabian Style

Amr Abd El-Wahab; C. Visscher; J. Kamphues. 2018. "Impact of different dietary protein sources on performance, litter quality and foot pad dermatitis in broilers." Journal of Animal and Feed Sciences 27, no. 2: 148-154.

Journal article
Published: 08 December 2017 in Journal of Animal Physiology and Animal Nutrition
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Foot health represents an issue in wild avifauna breeding practices. In particular, prevalence of digital ulceration (DU) and foot pad dermatitis (FPD) are valid indicators of welfare in wildlife conservation centres and may be interpreted as to fitness for bird's reintroduction into the wild. This study meant to test the effects of raising practices on foot pad health in captive Sardinian partridges (Alectoris barbara barbara Bonnaterre, 1790) reared for biodiversity conservation, to assess welfare and fitness to reintroduction into nature. A total of 22 couples were allotted into two experimental groups. In one group, 10 couples were housed in 10 cages for breeding partridges, consisting of two animals each, with metal wire flooring system, above trays where droppings were collected. The remaining 12 couples were housed in six aviaries, consisting of four animals each, on natural (earth and stones) ground. In both groups, partridges were fed identical diets. No significant differences of food pad scoring were found between birds housed in cages (2.3 ± 0.4) and those reared in aviaries on natural ground (2.5 ± 0.6). Moreover, scores of male foot pads for both groups (2.4 ± 0.6) had no significant differences in comparison with female foot pads, independently on housing (2.5 ± 0.4). Body mass (BM) was higher (+4.36%) than average BM reported for wild Sardinian partridges. Digital ulceration was found in the 20% of females, exclusively from the cage group. Body mass of females in cages with metal wire flooring appeared to be significantly (p < .001) and negatively correlated (r = −.528) with DU prevalence. These results suggest that housing conditions impacts differently on behaviour of females and males in one same couple, and this relates to foot health, in particular as to DU prevalence.

ACS Style

M. G. Cappai; A. Abd El-Wahab; G. Arru; M. Muzzeddu; W. Pinna. Prevalence of foot disorders in captive Sardinian partridges (Alectoris barbara barbara Bonnaterre, 1790) as useful indicators of fitness to natural environment. Journal of Animal Physiology and Animal Nutrition 2017, 102, e864 -e869.

AMA Style

M. G. Cappai, A. Abd El-Wahab, G. Arru, M. Muzzeddu, W. Pinna. Prevalence of foot disorders in captive Sardinian partridges (Alectoris barbara barbara Bonnaterre, 1790) as useful indicators of fitness to natural environment. Journal of Animal Physiology and Animal Nutrition. 2017; 102 (2):e864-e869.

Chicago/Turabian Style

M. G. Cappai; A. Abd El-Wahab; G. Arru; M. Muzzeddu; W. Pinna. 2017. "Prevalence of foot disorders in captive Sardinian partridges (Alectoris barbara barbara Bonnaterre, 1790) as useful indicators of fitness to natural environment." Journal of Animal Physiology and Animal Nutrition 102, no. 2: e864-e869.

Journal article
Published: 30 September 2017 in Veterinary Sciences
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On the occasion of a clinical case on a turkey farm and based on the suspicion that the diet composition could be the cause, an eight-week diagnostic trial was performed with turkey poults (n = 54) divided into two groups (control and experimental). The levels of vitamin A in the starter and grower diets of the control group were 7168 and 5213 IU/kg diet, but <1000 IU/kg in the experimental ones. Vitamin A and uric acid contents were measured in the serum, while liver samples were taken to determine the vitamin A content. Parts of the central nervous system and some internal organs were examined histologically. In the sixth week, ruffled feathers and uncoordinated gait were the earliest signs seen in the experimental group. The vitamin A content in the liver samples significantly decreased in the experimental group (0.09 mg/kg vs. 29.5 mg/kg). The serum level of uric acid in the experimental group was significantly higher (12.8 mg/dL vs. 3.38 mg/dL). Birds in the experimental group showed squamous metaplasia in the oesophagus. No histopathological alterations were seen in the central nervous system. The elevated uric acid level in the serum is worth mentioning.

ACS Style

Amr Abd El-Wahab; Christian Visscher; Christine Ratert; Mareike Kölln; Daniel Diephaus; Andrease Beineke; Josef Kamphues. Outcome of an Experimental Study in Growing Turkeys Suspected of Having a Diet Related, Uncommon and Uncoordinated Gait. Veterinary Sciences 2017, 4, 49 .

AMA Style

Amr Abd El-Wahab, Christian Visscher, Christine Ratert, Mareike Kölln, Daniel Diephaus, Andrease Beineke, Josef Kamphues. Outcome of an Experimental Study in Growing Turkeys Suspected of Having a Diet Related, Uncommon and Uncoordinated Gait. Veterinary Sciences. 2017; 4 (4):49.

Chicago/Turabian Style

Amr Abd El-Wahab; Christian Visscher; Christine Ratert; Mareike Kölln; Daniel Diephaus; Andrease Beineke; Josef Kamphues. 2017. "Outcome of an Experimental Study in Growing Turkeys Suspected of Having a Diet Related, Uncommon and Uncoordinated Gait." Veterinary Sciences 4, no. 4: 49.

Journal article
Published: 19 June 2017 in Journal of Animal Physiology and Animal Nutrition
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The aim of the present study was to examine possible effects of a different protein supply on the presence of Campylobacter in excreta and caecal content of broiler chickens. Therefore, 220 one-day-old chickens were fed five different diets in the experimental period (day 8 onwards). In the control group (CON; n = 3 boxes), a soya bean-based industrially produced complete diet containing 5–10% whole wheat and coccidiostats was fed, whereas in the remaining groups, four own-made complete diets with four protein sources and combinations (4 × 2 boxes; soya bean meal-based diet = SBM; rapeseed meal-containing diet = RSM; haemoglobin meal-containing diet = HGP; algae-containing diet = ALG) were offered. During the 6-week trial period, data concerning performance parameters, excreta and litter characteristics and microbiological analysis of excreta and caecal content at dissection were collected. The qualitative bacteriological investigation was based on the EN ISO 10272-1:2006, taken from the official collection of analysis methods in accordance with § 64 LFBG. For quantitative bacteriological tests, a 10-fold dilution series was made followed by culture-based quantification methods on approved selective media in duplicate. Comparing the results of the final dissection (day 44/45), nearly all samples of animals receiving the own-made complete diet were Campylobacter positive in the caecal content, whereas only seven of fifteen samples were positive in the CON group. With regard to the CFU in the caecal content, the counts of Campylobacter were significantly lower for animals fed the commercial diet (2.47 ± 3.06 vs. 7.36 ± 0.66 log10 CFU/g). When only the positive animals were evaluated, significant differences were also found between the CON group and the total of the other groups (5.30 ± 2.08 vs. 7.54 ± 1.70 log10 CFU/g). Although significant differences were seen in the results, no final recommendation can be given how to create a diet to reduce an infection with Campylobacter.

ACS Style

C. F. Visscher; Amr Abd El-Wahab; Marwa Ahmed; J. Hankel; V. Taube; J. Kamphues. Influence of different protein sources in the broiler diet on the presence ofCampylobacterspp. in excreta and caecal content. Journal of Animal Physiology and Animal Nutrition 2017, 101, 95 -104.

AMA Style

C. F. Visscher, Amr Abd El-Wahab, Marwa Ahmed, J. Hankel, V. Taube, J. Kamphues. Influence of different protein sources in the broiler diet on the presence ofCampylobacterspp. in excreta and caecal content. Journal of Animal Physiology and Animal Nutrition. 2017; 101 ():95-104.

Chicago/Turabian Style

C. F. Visscher; Amr Abd El-Wahab; Marwa Ahmed; J. Hankel; V. Taube; J. Kamphues. 2017. "Influence of different protein sources in the broiler diet on the presence ofCampylobacterspp. in excreta and caecal content." Journal of Animal Physiology and Animal Nutrition 101, no. : 95-104.

Journal article
Published: 01 March 2017 in Advances in Animal and Veterinary Sciences
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Amr Abd El-Wahab; Abeer Aziza. Effects of Different Dietary Oil Sources and Levels on Growth Performance and Serum Metabolites in Broiler Chickens. Advances in Animal and Veterinary Sciences 2017, 5, 127 -132.

AMA Style

Amr Abd El-Wahab, Abeer Aziza. Effects of Different Dietary Oil Sources and Levels on Growth Performance and Serum Metabolites in Broiler Chickens. Advances in Animal and Veterinary Sciences. 2017; 5 (3):127-132.

Chicago/Turabian Style

Amr Abd El-Wahab; Abeer Aziza. 2017. "Effects of Different Dietary Oil Sources and Levels on Growth Performance and Serum Metabolites in Broiler Chickens." Advances in Animal and Veterinary Sciences 5, no. 3: 127-132.

Journal article
Published: 15 July 2016 in International Journal of Poultry Science
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Marwa F.E. Ahmed; Marwa I. Khalifa; Amr Abd El- Wahab; Mohamed A.A. Youssef. Indoor Fungal Load in Broiler Flocks Environment at Different Stages of Production Cycle. International Journal of Poultry Science 2016, 15, 297 -303.

AMA Style

Marwa F.E. Ahmed, Marwa I. Khalifa, Amr Abd El- Wahab, Mohamed A.A. Youssef. Indoor Fungal Load in Broiler Flocks Environment at Different Stages of Production Cycle. International Journal of Poultry Science. 2016; 15 (8):297-303.

Chicago/Turabian Style

Marwa F.E. Ahmed; Marwa I. Khalifa; Amr Abd El- Wahab; Mohamed A.A. Youssef. 2016. "Indoor Fungal Load in Broiler Flocks Environment at Different Stages of Production Cycle." International Journal of Poultry Science 15, no. 8: 297-303.