Papers by Ibrahim El-Wardany
Egyptian Journal of Agricultural Research
A total of 64 males and 192 females from Japanese quail breeders (Coturnix coturnix japonica) wer... more A total of 64 males and 192 females from Japanese quail breeders (Coturnix coturnix japonica) were divided into two groups of different ages (old birds; 52 weeks of age (WOA) and young birds; (10 WOA). These subgroups were used in a series of four natural mating groups in a regular and reciprocal manner. In the 1st and 2nd mating groups; old males were paired with old and young females, respectively. While the 3rd and the 4th groups; young males were paired with old and young females, respectively. The first and the second subgroups of both ages (old and young) were subjected to a treatment of 20 ppm silver nanoparticles (AgNps) in drinking water. The third and fourth ones were used as a control treatment given fresh water with no supplement. Egg production parameters, feed consumption and feed conversion ratio were recorded biweekly. At the last week of the experimental period (8 wk), birds were weighed and slaughtered, autopsied and some organs were weighed. Some blood constituent...
Animal Biotechnology, 2021
The current study was conducted to investigate effects of copper (sulfate, acetate and nano) in o... more The current study was conducted to investigate effects of copper (sulfate, acetate and nano) in ovo injection at 10 days of the embryogenesis period on body weight (BW), immunity, biochemical parameters and carcass traits of broiler chicks at 35 days of age. A total number of 462 fertile eggs were used in seven groups, each group containing 66 eggs in three replicates. The experimental design was as follows: the group 1 as a control, while groups 2, 3 and 4 injected with 8 μg/egg of Cu sulfate, Cu acetate and nano Cu, respectively, and groups 5, 6 and 7 injected with 16 μg/egg of Cu sulfate, Cu acetate and nano Cu, respectively. Results stated that BW was increased in Cu-injected groups, except groups of Cu acetate, but plasma constituents, carcass and relative weight of organs did not affect. Cu level (8 μg/egg) had better results than Cu level (16 μg/egg). No differences between among groups in relative weights of spleen and bursa and immune response. In conclusion, it is recommended that in ovo injection of different sources of Cu can augment the BW and did not harmfully affect immunity, carcass traits and biochemical parameters of broiler chicks.
This study was conducted to investigate the effect of different sources of copper (sulfate, aceta... more This study was conducted to investigate the effect of different sources of copper (sulfate, acetate and nano) in ovo injection at 10 days of embryogenesis period on hatching traits and some physiological parameters of newly-hatched broiler chicks. A total number of 462 fertile eggs were used (with an average weight of 66.24±0.23g in 7 groups, each group containing 66 fertile eggs in three replicate. The experimental design was as follows the group 1 as control, while the groups 2, 3 and 4 injected with 0.1ml deionized water containing 8μg/egg of Cu sulfate, Cu acetate and nano Cu, respectively, and the groups 5, 6 and 7 injected with 0.1ml deionized water containing 16μg/egg of Cu sulfate, Cu acetate and nano Cu, respectively. After hatching eight one-day chicks around the average of each group were used in this study and the results as follows, different sources of Cu in ovo injection at 10 days of incubation by two levels (8 and 16μg/egg) did not affect hatching traits except elev...
Journal of Thermal Biology, 2022
The poultry industry faces several obstacles and challenges, including the changes in global temp... more The poultry industry faces several obstacles and challenges, including the changes in global temperature, increase in the per capita demand for meat and eggs, and the emergence and spread of various diseases. Among these, environmental challenges are one of the most severe hurdles impacting the growth and productivity of poultry. In particular, the increasing frequency and severity of heat waves over the past few years represent a major challenge, and this is expected to worsen in the coming decades. Chickens are highly susceptible to high ambient temperatures (thermal stress), which negatively affect their growth and productivity, leading to enormous economic losses. In the light of global warming, these losses are expected to increase in the near future. Specifically, the worsening of climate change and the rise in global temperatures have augmented the adverse effects of heat on poultry production worldwide. At present, the world population is approximately 7.9 billion, and it has been predicted to reach 9.3 billion by 2050 and approximately 11 billion by 2100, implying a great demand for protein supply; therefore, strategies to mitigate future poultry challenges must be urgently devised. To date, several mitigation measures have been adopted to minimize the negative effects of heat stress in poultry. Of these, thermal acclimation at the postnatal stage or throughout the embryonic stages has been explored as a promising approach; however, for large-scale application, this approach warrants further investigation to determine the suitable temperature and poultry age. Moreover, molecular mechanisms governing thermal conditioning are poorly understood. To this end, we sought to expand our knowledge of thermal conditioning in poultry, which may serve as a valuable reference to improve the thermotolerance of chickens via nutritional management and vitagene regulation. Vitagenes regulate the responses of poultry to diverse stresses. In recent years, nutritionists have paid close attention to bioactive compounds such as resveratrol, curcumin, and quercetin administered alone or in combination. These compounds activate vitagenes and other regulators of the antioxidant defense system, such as nuclear factor-erythroid 2-related factor 2. Overall, thermal conditioning may be an effective strategy to mitigate the negative effects of heat stress. In this context, the present review synthesizes information on the adverse impacts of thermal stress, elucidating the molecular mechanisms underlying thermal conditioning and its effects on the acquisition of tolerance to acute heat stress in later life. Finally, the role of some polyphenolic compounds, such as resveratrol, curcumin, and quercetin, in attenuating heat stress through the activation of the antioxidant defense system in poultry are discussed.
Arab Universities Journal of Agricultural Sciences, 2019
A total number of 500 Japanese quail fertile eggs were used to study the effect of in ovo (IO) ad... more A total number of 500 Japanese quail fertile eggs were used to study the effect of in ovo (IO) administration of Nano-Selenium (Nano-Se) and Glutamine (Gln) on hatchability, post hatch performance carcass and some blood biochemical traits. Eggs were divided into five treatments groups and injected just before incubation. The 1 st group was not injected (Negative Control;T1), the 2 nd one was injected with Bovine Serum Albumin (BSA) (Positive control; T2), the 3 rd group was injected with Nano-Se at 2.5 ppb / egg (T3), while, the 4 th (T4) and 5 th (T5) groups were injected with glutamine at 20 and 10 ppm / egg, respectively. The hatched chicks were distributed according to their treatments and reared up to the 6 th week of age. Parameters such as the hatchability, hatchlings weight, productive performance, carcass traits and some blood biochemical indices were estimated. The IO-Gln at 20 ppm (T4) significantly improved hatchability, increased the productive performance of post-hatch quails (carcass weight, gizzard and breast muscles percentages) and enhanced the feed conversion ratio (FCR) compared to other groups. Furthermore, IO with Nano-Se (T3) significantly increased plasma albumin and albumin / globulin (A/G) ratio, and decreased cholesterol and triglycerides levels, while high density lipoprotein (HDL) were significantly increased and low density lipoprotein (LDL) were significantly decreased by IO-Gln (T4 and T5). It could be concluded that using the in ovo administration of Nano-Se and Gln concentration for Japanese quail breeder eggs, had no negative effect on hatchability and could improve post-hatched performance carcass traits, particularly using Gln at a dosage of 20 ppm / egg.
Probiotics and Antimicrobial Proteins, 2019
Bifidobacterium is one of the most promising probiotics which was recently used as an alternative... more Bifidobacterium is one of the most promising probiotics which was recently used as an alternative growth promoter in poultry. This trial was considered to evaluate the potential effects of in ovo administration of Bifidobacterium bifidum and Bifidobacterium longum on growth performance and biochemical parameters of broilers. Three hundred broiler breeder eggs were incubated and candled individually at day 17 of embryogenesis; then, eggs that had live embryos were randomly divided into six groups. The first and second groups were of intact (without injection) and vehicle-injected (sterile distilled water) control groups, respectively. Other groups were in ovo injected with 1 × 109 and 1 × 107 CFU B. bifidum, and 1 × 109 and 1 × 107 CFU B. longum, respectively. Hatchability was significantly (P < 0.001) affected by in ovo inoculation of bifidobacteria strains. Body weight gain and feed conversion ratio were significantly improved (P = 0.014 and 0.019, respectively) in all treatment groups. Protein fractions, aspartate aminotransferase, and alanine aminotransferase activities were not significantly altered by bifidobacteria strains in ovo injection. Regarding ileal histomorphometry parameters, a significant elevation in villus height and villus height/crypt depth ratio values were recorded while crypt depth was insignificantly affected by in ovo treatments. It could be concluded that the tested manual method of in-yolk sac injection at day 17 of incubation is more favorable in easier delivering of bifidobacteria strains which improve broiler growth performance and ileal development without any undesirable effects on blood indices and liver and renal functions.
Arab Universities Journal of Agricultural Sciences, 2019
Animals, 2021
The effects that maternal dietary methionine have on progeny have been reported on broilers. Howe... more The effects that maternal dietary methionine have on progeny have been reported on broilers. However, the paternal effects are not known, so the current study was conducted to explore the influences of paternal dietary methionine (Met) have on progeny carcass traits, meat quality, and related gene expressions. A total of 192 hens and 24 roosters from Ross parent stock at 36 weeks of age were selected. From week 37 to 46, the roosters were allocated to two groups with three replicates of 4 cocks each, (control, 0.28% Met), and methionine group (MET group, 0.28% Met + 0.1% coated Met). The results revealed that, although the heavier live body weight in progeny at day 49 of control group compared to MET group (p < 0.05), the relative eviscerated yield and relative thigh muscle yield were higher in MET group (p < 0.05); but the relative abdominal fat was lower (p < 0.05). In thigh and breast muscles, a positive response of pH24 h value, shear force (g) and drip loss (%) were ob...
A total of 64 males and 192 females from Japanese quail breeders (Coturnix coturnix japonica) wer... more A total of 64 males and 192 females from Japanese quail breeders (Coturnix coturnix japonica) were divided into two groups of different ages (old birds; 52 weeks of age (WOA) and young birds; (10 WOA). These subgroups were used in a series of four natural mating groups in a regular and reciprocal manner. In the 1st and 2nd mating groups; old males were paired with old and young females, respectively. While the 3rd and the 4th groups; young males were paired with old and young females, respectively. The first and the second subgroups of both ages (old and young) were subjected to a treatment of 20 ppm silver nanoparticles (AgNps) in drinking water. The third and fourth ones were used as a control treatment given fresh water with no supplement. Egg production parameters, feed consumption and feed conversion ratio were recorded biweekly. At the last week of the experimental period (8 wk), birds were weighed and slaughtered, autopsied and some organs were weighed. Some blood constituent...
Animal Biotechnology
This study aimed to assess impacts of early in ovo injection (at 10 days of incubation) of copper... more This study aimed to assess impacts of early in ovo injection (at 10 days of incubation) of copper (sulfate, acetate, or nanoparticles) on histomorphometric parameters of small intestine and growth performance of post-hatched chicks. Fertile eggs (n = 462) were distributed to seven groups (3 replicates, 22 eggs in each). The first group as a control, the 2nd, 3rd and 4th groups injected with 100 µL deionized water containing 8 μg/egg of Cu (sulfate, acetate and nanoparticles, respectively), and the 5th, 6th and 7th groups injected with 100 µL deionized water containing 16 μg/egg of the same Cu sources above. Results illustrated that in ovo administration of Cu sulfate and Cu acetate significantly improved histological parameters of small intestine parts of newly hatched chicks compared with the control. Cu sulfate and nano-Cu significantly augmented body weight gain compared with the control. In ovo Cu injection showed a nonsignificant improvement in feed conversion ratio. The highest level (16 μg/egg) of different sources was better than the lowest level (8 μg/egg) in most results. In conclusion, it is recommended that in ovo injection of Cu (16 μg/egg) can improve the growth performance (Cu sulfate and nano-Cu) and the small intestine histomorphometry parameters (Cu sulfate and Cu acetate) of broiler chicks.
Sixty growing New Zealand White (NZW) male rabbits aged six weeks, weighed 750.0±5g were used in ... more Sixty growing New Zealand White (NZW) male rabbits aged six weeks, weighed 750.0±5g were used in a feeding experiment lasted 9 weeks. Rabbits were housed in controlled-climatic conditions at a mean ambient temperature 33.1°C and relative humidity 43% to keep rabbits under heat stress conditions. The rabbits were randomly distributed to four equal groups (five replicates each). The 1 st group fed the control diet (R1), R2 group fed diet supplemented with 1% moringa leaves, R3 group fed diet supplemented with 1% rosemary leaves, while R4 group fed diet supplemented with a mixture of moringa and rosemary leaves of 0.5% each. Diets and water were provided ad-libitum over nine weeks. The results revealed that live body weight, average daily gain and feed conversion ratio were significantly improved with R4 and R2 diets, while daily feed intake was not affected among groups. Apparent digestibility of crude fiber and ether extract were increased (p≤0.05) with R2 diet. Nitrogen balance was ...
Journal of Thermal Biology
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Papers by Ibrahim El-Wardany