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The chemical composition, antioxidant activity, tannic acid content, mineral, fatty acid, and amino acid profiles of oil-extracted Moringa peregrina seed meal (OEMPSM) were determined. Apparent (AME) and true (AMEn) metabolizable energy... more
The chemical composition, antioxidant activity, tannic acid content, mineral, fatty acid, and amino acid profiles of oil-extracted Moringa peregrina seed meal (OEMPSM) were determined. Apparent (AME) and true (AMEn) metabolizable energy and apparent (AAAU) and true (TAAU) amino acid utilization were evaluated using a precision feeding trial. The protein (CP) quality was evaluated by a total efficiency analysis method. The antioxidant activity, gauged by 2,2-diphenyl-1-picrylhydrazyl (DPPH), was 237, 353, and 15.2 mg/mL for the water and ethanol extracts, and ascorbic acid, respectively. Tannic acids were 131.4 mg/100 g dry weight. The OEMPSM had 27.2% CP and 22.4, 15.1, and 15.8 MJ/kg of gross energy, AME and AMEn, respectively. The neutral detergent fiber, acid detergent fiber, and hemicellulose were 40.2, 29.7, and 10.5% DM, respectively. The 15.41% of total fatty acids were saturated and 84.57% unsaturated. The AAAU and TAAU of OEMPSM were 30.92% and 61.06%, respectively. From fi...
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Possibility to improve rice polishing utilisation in broiler diets by en- zymes or dietary formulation based on digestible amino acids Möglichkeiten der Verbesserung der Verwertung von Reiskleie in Broilerrationen durch den Einsatz von Enzymen oder durch die Formulierung der Rationen auf der Basi...more
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Silver nanoparticles (AgNPs) interact with the microbes and host immune system to protect against diseases. Fertile broiler eggs (n = 900) were allotted to six groups: un-injected control, sham (sterile water), AgNPs (50 μg), AgNPs+Amino... more
Silver nanoparticles (AgNPs) interact with the microbes and host immune system to protect against diseases. Fertile broiler eggs (n = 900) were allotted to six groups: un-injected control, sham (sterile water), AgNPs (50 μg), AgNPs+Amino acids (Methionine-10 mg + Arginine-25 mg), AgNPs+Vitamins (Vit B1-72μg + Vit B6-140μg), and AgNPs+Trace Elements (Zn-80 μg and Se-0.3 μg) and incubated for 18 days. On 18th embryonic day, 0.6 ml test solution was injected at the broad end of egg using 25 mm needle and transferred to hatcher. Post-hatch, half of the chicks from each group were vaccinated with Newcastle disease (ND) vaccine, and the other half were kept as unvaccinated unit and reared for 42 d with standard management practices. Hatchability, 1st and 42nd d body weight, feed intake, and feed conversion ratio were similar between treatment groups in both vaccinated and unvaccinated units. The relative weight of bursa Fabricius and thymus was similar, but spleen weight was higher (P ≤ 0...
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Research Interests: Food Science and Nutrient
Abstract In total, 144 Arbour Acres broiler chickens were distributed among four treatment groups (six replicates per treatment; six chickens per replicate) during days 20–40 of age. The chickens were offered iso-caloric and... more
Abstract In total, 144 Arbour Acres broiler chickens were distributed among four treatment groups (six replicates per treatment; six chickens per replicate) during days 20–40 of age. The chickens were offered iso-caloric and iso-nitrogenous diets containing four dietary oil levels (DOL): 0 (oil non-supplemented diet, control), 2, 4, and 6% in a relatively low-energy diet (12.4 MJ ME/kg diet). During the experimental period, the chickens were reared under natural hot weather conditions (32.5 ± 4 °C, 54 ± 7% relative humidity). Growth, feed conversion ratio (FCR), protein (PCR), metabolisable energy (MECR) ratio, and European production efficiency index (EPEI) were similar among groups fed up to 4% DOL but raising DOL to 6% impaired these traits. Besides, DOL at 6% decreased digestibility of dry matter, crude protein, and ash. Furthermore, a 6% DOL showed the lowest digestibility of dry matter, crude protein, and ash. Dressing percentage was the highest in 2%, and abdominal fat percentage showed the same trend in 6% DOL, but the gizzard percentage was the lowest in 6% DOL. The liver percentage increased significantly with fat/oil inclusion compared to the control. Meat dry matter and either extract increased considerably due to offering different DOLs, with maximum values at 6%. The inclusion of dietary oils in diets significantly increased serum malondialdehyde (MDA) but decreased serum total antioxidant capacity (TAC)/MDA ratio compared to the 0% DOL. In conclusion, under natural summer conditions, from 20 to 40 days of age, broilers' best productive characteristics were achieved using 0-2% DOL, and the best immune response was obtained for 4–6% DOL. Highlights Hot weather negatively influences the productivity of broilers. Fats/oils are essential for animal and human nutrition for several reasons; however, they are expensive compared to other energy sources. Improving the production index is essential to keep broilers farming profits under hot weather.
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Severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) has caused a severe global pandemic with major public health issues. Public health sectors implemented several control strategies, such as social distancing, hygienic... more
Severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) has caused a severe global pandemic with major public health issues. Public health sectors implemented several control strategies, such as social distancing, hygienic measures, and the development of anti-viral drugs and vaccines. However, the situation is still critical due to several challenges facing the global control strategy. SARS-CoV-2 has undergone several mutations that will drive viral evolution, which might impact the virus’s transmissibility and pathogenicity and the immune escape and development of resistance to therapeutics. Moreover, although the European Medicines Agency (EMA) and the US Food and Drug Administration (FDA) have approved several vaccines, however, some vaccines, especially vector-based vaccines, have rarely induced severe fatal side effects. These side effects led to widespread doubts about the safety of the coronavirus disease-19 (COVID-19) vaccines, which in turn dragged a certain prop...
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... AA El-Deek, Mervat S. El-Deen 1 , Safaa M. Hamdy, MA Asar, ... The optimum dietary DEB has been reported to be 220 to 270 mEq/ kg for broilers of all ages, with up to 0.40% for Na and 0.15 to 0.30% for Cl (Oviedo-Rondon et al., 2001,... more
... AA El-Deek, Mervat S. El-Deen 1 , Safaa M. Hamdy, MA Asar, ... The optimum dietary DEB has been reported to be 220 to 270 mEq/ kg for broilers of all ages, with up to 0.40% for Na and 0.15 to 0.30% for Cl (Oviedo-Rondon et al., 2001, Ahmad et al., 2005 and Mushtaq et al ...
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Research Interests: Food Science and Biology
... Characterization of Black Cumin (Nigella Sativa) seeds 2-Proteins. Alex. Sci. Exch. Vol. 14, No. ... Nigella sativa seed oil meal as a nontraditional source of plant protein in Japanese quail diets. Egyptian Poultry Science,... more
... Characterization of Black Cumin (Nigella Sativa) seeds 2-Proteins. Alex. Sci. Exch. Vol. 14, No. ... Nigella sativa seed oil meal as a nontraditional source of plant protein in Japanese quail diets. Egyptian Poultry Science, 21:107-125. Akhtar MS, Nasir Z and Abid AR. (2003). ...
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The effect of amino acids (AAs) supplementations on improving utilization of protein and decreasing nitrogen excretion was studied with Arbor Acres broiler males during days 1-28 of age (Trial 1) and 1-21 of age (Trial 2). In trial 1, the... more
The effect of amino acids (AAs) supplementations on improving utilization of protein and decreasing nitrogen excretion was studied with Arbor Acres broiler males during days 1-28 of age (Trial 1) and 1-21 of age (Trial 2). In trial 1, the positive control (PC) diet contained 23% CP while PC in trial 2 was 22% CP. In trial 1, the negative control (NC) diet contained 18% CP supplemented with methionine (Met) plus lysine (Lys) as that of the PC. The NC was supplemented or not with arginine (Arg), therionine (Thr), valine (Val), isoleucine (Ile) or all of these amino acids (AA) according to NRC (1994). In addition, glycine was supplemented to the later treatment as amino nitrogen. In trial 2, the NC diet contained 19% CP diet was formulated based either on corn-soybean meal without (vegetable diet) or with fish and meat meals (animal protein diet). The NC diet was supplemented or not with Arg, Thr, Val, tryptophan (Tryp) or a combination of all of these AA plus isoleucine (Ile) to meet ...
The objective of this experiment was to evaluate 2 supplemental forms of Se on reproductive performance and tissue trace mineral concentration in fetus and first-parity gilts during pregnancy and their progeny. Crossbred gilts (n=100)... more
The objective of this experiment was to evaluate 2 supplemental forms of Se on reproductive performance and tissue trace mineral concentration in fetus and first-parity gilts during pregnancy and their progeny. Crossbred gilts (n=100) were selected at 183±2.7 d and 137±10 kg BW and fed a common diet. After 1 mo, 8 gilts were sacrificed to establish baseline liver Se concentration and the remaining 92 gilts allotted to receive Se (0.3 mg/kg diet) as inorganic Se (Na2SeO3) or a Se supplement that contains organoselenium compounds (Sel-Plex; Alltech Inc., Nicholasville, KY). At 267±5.7 d (171±11 kg), gilts were estrus-synchronized and bred. Gilts were then slaughtered at defined time points throughout gestation (d 0, 43, 58, 73, 91, 101, or 108 of gestation; n=6 to 12 gilts/time point). A week before the expected farrowing day, 10 pregnant gilts (5 from each treatment) were moved to farrowing crates and monitored. Two pigs from each litter were randomly selected and euthanized at d 0 (...
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1 Department of Animal and Poultry Production, Faculty of Agriculture, Damanhour University, Egypt 2 Department of Poultry Nutrition, APRI, ARC, Ministry of Agriculture and Land Reclamation, Egypt 3 Department of Animal and Fish... more
1 Department of Animal and Poultry Production, Faculty of Agriculture, Damanhour University, Egypt 2 Department of Poultry Nutrition, APRI, ARC, Ministry of Agriculture and Land Reclamation, Egypt 3 Department of Animal and Fish Production, Faculty of agriculture-Saba Basha, Alexandria University, Egypt 4 Department of Scienze Zootecniche e Ispezione degli alimenti, Faculty of Veterinary Medicine, University of Napoli Federico II, Italy Manuskript eingegangen am 6. Juli 2010, angenommen am 20. September 2010
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The ban of in-feed antibiotics growth promoters (AGPs) requires seeking of alternatives. Thus, the use of additives such as exogenous enzymes and probiotic may be proposed (HUGHES and HERITAGE, 2001; BRUFAU et al., 2006; NASIR and... more
The ban of in-feed antibiotics growth promoters (AGPs) requires seeking of alternatives. Thus, the use of additives such as exogenous enzymes and probiotic may be proposed (HUGHES and HERITAGE, 2001; BRUFAU et al., 2006; NASIR and GRASHORN, 2008; BAURHOO et al., 2009). BEDFORD (2000) suggested that enzymes and probiotic preparations may be beneficial when antibiotic growth promoters are banned in order to reduce resulting enteric problems. However, direct comparison between AGP and non-AGP was suggested for addressing their efficacy (BEDFORD, 2000, BRUFAU et al., 2006; NASIR and GRASHORN, 2008). GUNAL et al. (2006) reported that growth, feed intake, feed conversion ratio (FCR) and mortality were not affected by flavomycin, a probiotic mixture or a mixture of organic acids including plant extract and mineral salts (genex®). DENLI et al. (2003) found that broilers given a diet supplemented with flavomycin with 0.2% of the mineral salts (genex®) increased carcass weight of broiler chic...
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This research aimed to study the impact of supplementation of three multi-enzyme levels (0, 0.1, and 0.2% of feed) and two levels of dietary treatments [standard diet (SD) and low-density diet (LDD)] on growth performance, carcass traits,... more
This research aimed to study the impact of supplementation of three multi-enzyme levels (0, 0.1, and 0.2% of feed) and two levels of dietary treatments [standard diet (SD) and low-density diet (LDD)] on growth performance, carcass traits, digestibility, and meat quality of broilers from 1 to 38 days of age. A total of 216 1-day-old Arbor Acres broiler chicks were randomly assigned to a factorial experiment (2 × 3) comprising six dietary treatments, each with six replicates and each replicate with six chickens. The results showed that the LDD significantly reduced body weight gain by 5.0%, compared with the SD. Multi-enzymes significantly improved body weight gain and the production index (PI) relative to the SD. The feed conversion ratio was significantly enhanced with increased multi-enzymes from 1 to 21 days. A significant relation between the multi-enzyme concentration and type of dietary treatment was observed in body weight gain and feed conversion ratio from 1 to 21 days of ag...
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Research Interests: Biology, Animal Production, Veterinary Science, Jejunum, Veterinary Sciences, and 4 moreMeal, Quail, Ileum, and Duodenum
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Although poultry provides an economically sound alternative protein source worldwide, negative environmental effects attributable to poultry production in Egypt have not been addressed. The environmental hazard arising from excess... more
Although poultry provides an economically sound alternative protein source worldwide, negative environmental effects attributable to poultry production in Egypt have not been addressed. The environmental hazard arising from excess nitrogen and phosphorus in poultry waste as well as other contaminants such as drug residues, pathogenic organisms, and viruses (like avian influenza) could be eliminated via nutritional and management interventions, and attention in the media has increased greatly (media@environmentaldefense.org). Soil, water, and air pollution, and transmitted diseases have been reported worldwide and methods of controlling them have been discussed in the literature. Nutrient concentrations, dietary manipulation, and waste management may play an important role in these areas. Biotechnology may offer interesting tools for improving nutrient utilization and eliminating nutrient waste, while protecting the environment from excess pollutants, including animal wastes. On the ...
Two local strains of chickens (Mandarah (Mn) and Silver Montazah (SM)) and one commercial strain (Lohman Brown (LB)), were used in this study to produce three way crosses (SM x Mn x LB) and (Mn x SM x LB), where, a two way cross (Mn x LB)... more
Two local strains of chickens (Mandarah (Mn) and Silver Montazah (SM)) and one commercial strain (Lohman Brown (LB)), were used in this study to produce three way crosses (SM x Mn x LB) and (Mn x SM x LB), where, a two way cross (Mn x LB) males was mated to two-way cross (SM xLB) females to produce a three way-cross. Moreover, the two-way cross(SM xLB) males cross (Mn xLB) females to produce another three-way cross. Whereas, LB contribution was 50% of the three-way cross and SM and Mn contributed with 25%, each. Negative heterosis percentage (H%) for age (ASM) and body weight at sexual maturity BWSM, Feed intake during (28-32 wks), (32- 36 wks), (36-40 wks) and (28-40 wks) of age for the three way cross were found, while the egg number traits during the first 90d. of laying (EN90), annual egg number (EN365) and feed conversion at different periods had positive heterosis percentage (H%). DNA was extracted from blood of the commercial strain (LB) and three way crosses. RAPD-PCR techni...
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Objective of this work was to develop 2- and 3-way crosses to improve egg production traits in local strains of chickens. Two local strains of chickens, Mandarah (Mn) and Silver Montazah (SM), and one commercial strain Lohman Brown (LB),... more
Objective of this work was to develop 2- and 3-way crosses to improve egg production traits in local strains of chickens. Two local strains of chickens, Mandarah (Mn) and Silver Montazah (SM), and one commercial strain Lohman Brown (LB), were used in this study. In the first generation, Mn and SM were used as sire lines while, LB was used as a dam line to produce the 2-way cross (Mn × LB and SM x LB). In the second generation, the 3-way cross was developed where, LB contributed 50% of the 3-way cross Mn x SM x LB and SM x Mn x LB. Age and weight at sexual maturity were recorded individually. Egg number (EN) and egg weight (EW) during different periods of production were recorded and egg mass (EM) was calculated. Results showed that pullets of the 3-way cross matured 9 days earlier than those of the 2-way cross. In addition, the 2-way cross had heavier pullets by 49.6 g and by 82.5 g than the local strains and the 3- way cross, respectively. The LB strain had greater egg number (EN) ...
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Research Interests: Chemistry, Animal Science, Nutrient, Methionine, Amino Acid Profile, and 3 moreMeal, Valine, and Isoleucine
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To evaluate the effect of bee pollen (BP) and/or propolis (Pro) supplementation on rabbit does, 64 nulliparous NZW rabbits does were distributed among eight groups (eight animals/group). One unsupplemented group was the control; the other... more
To evaluate the effect of bee pollen (BP) and/or propolis (Pro) supplementation on rabbit does, 64 nulliparous NZW rabbits does were distributed among eight groups (eight animals/group). One unsupplemented group was the control; the other seven groups were supplemented, respectively, with zinc bacitracin (ZnB) at 100 mg, BP at 150 and 300 mg, Pro at 150 and 300 mg, BP+Pro at 150 and 300 mg of each three times/week, day after day continuously along eight parities. The BP300, Pro300 and BP+Pro150 groups had higher body weight of litter at birth and number of kids born alive. The BP supplementation at 150 mg increased plasma total protein and albumin than the control group. The BP or Pro at 150 mg decreased plasma T3 than the other groups except for BP+Pro150. The ZnB group had significantly greater T3/T4 ratio compared to BP, Pro and BP+Pro at 150 mg. The BP+Pro150 group had less ALT than the control; BP300 and Pro 300 mg resulted in lower plasma AST than the groups Pro150 with or wit...
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Sixty‐four nulliparous female rabbits were distributed among eight groups (eight animals/group). Group one was the unsupplemented control group; the other seven groups were supplemented with zinc bacitracin (ZnB) at 100 mg, or bee pollen... more
Sixty‐four nulliparous female rabbits were distributed among eight groups (eight animals/group). Group one was the unsupplemented control group; the other seven groups were supplemented with zinc bacitracin (ZnB) at 100 mg, or bee pollen (BP) and/or propolis (Pro) at 150 and 300 mg in a capsulated form, three times a week, day after day, continuously all over the experimental period. The experiment was run for eight parties; at each parity, 28 kids of each doe group (a total of 224 rabbits) were divided into two subgroups weaned, respectively, at 24 and 30 days of age. Thus, for each parity, there were 16 groups (eight does treatments × two weaning age, 14 rabbits per group). The growing rabbits fed the standard diets without supplements. The growth performance, the carcass traits, the liver and the spleen histology of rabbits were checked up to 90 days of age to find possible carryover effects of the supplements. The supplements had no significant effect on most of the growth perfo...