Nafisa Ahmed Abd El-azeem

Scopus Publications

Early nutrition as a tool to improve the productive performance of broiler chickens
Nafisa A. Abd El- Azeem, Mahmoud Madkour, Nesrein M. Hashem, Mahmoud Alagawany
World S Poultry Science Journal, 2024
Use of macro- and microalgae in animal nutrition
Mahmoud Madkour, Ibrahim A. Matter, Abdel Rahman Y. Abdelhady, Ahmed M. Alaqaly, Nafisa A. Abd El-Azeem, et al.
Organic Feed Additives for Livestock, 2024
Growth performance and hepatic antioxidants responses to early thermal conditioning in broiler chickens
Mahmoud Madkour, Osama Aboelazab, Nafisa Abd El‐Azeem, Eman Younis, Mohamed Shourrap
Journal of Animal Physiology and Animal Nutrition, 2023
There are little data about antioxidants' status responses to early thermal conditioning (TC) on broiler chickens. Therefore, the present study was conducted to investigate the different time ages of thermal conditioning on antioxidants responses and the growth rate of broiler chicks. A total of two hundred forty-one-day-old male broiler chicks (Cobb 500) weighed on average 51.5 ± 0.5g were randomly distributed into four equal groups (60 chicks each), and chicks of each group were ranked in five replicates. The first group reared under the ambient temperature, while the second, third and fourth groups (TC3, TC5 and TC7) were subjected to early-age thermal conditioning at 39°C for 6 h on the third, fifth and seventh day of age respectively. Broilers were fed ad-libitum, and drinking water was a free choice during the experimental period. At the end of the experimental period that lasted 5 weeks, all experimental groups were exposed to heat challenge at 36°C for 6 h. Early-age thermal conditioning did not affect growth performance. Plasma corticosterone elevation in TC5 (as a post-challenge response) was the lowest among the experimental groups. Hepatic malondialdehyde significantly increased in TC5 and TC7 groups both at the post-conditioning stage and at the end of the experimental period. Hepatic glutathione, glutathione S-transferases, catalase and superoxide dismutase significantly decreased by early-age thermal conditioning compared with non-conditioned broilers. Microscopic examination of the liver sections from broilers chickens in TC5 and TC7 groups showed all the basic features of normal liver tissue, while the control and TC3 groups showed few necrotic areas. It could be concluded that early-age thermal conditioning at 39°C for 6 h on the fifth day of age could improve the antioxidant defence system of broilers without any adverse effects on growth performance.
Antioxidants status and physiological responses to early and late heat stress in two rabbit breeds
Mahmoud Madkour, Waleid M. E. Shakweer, Nesrein M. Hashem, Osama Aboelazab, Eman Younis, et al.
Journal of Animal Physiology and Animal Nutrition, 2023
Early life heat stress negatively affects rabbit production and well-being. However, the physiological response to acute heat stress in later life is not clearly defined. The present study aims to investigate the effects of early and late heat stress at 36°C on some blood constituents, antioxidant enzymes activity in the blood, and muscle in New Zealand white and Baladi Black rabbits. A total of sixty post-weaning rabbits of each breed were randomly divided into two groups; control groups (NZWC and BBC) and early heat-stressed groups for six hours at 36 ± 1°C and 62% relative humidity (RH) (NZWT and BBT groups). After heat stress, six rabbits from each group were slaughtered for blood and muscle tissue collection. The surviving rabbits were kept at 28 ± 1°C and 40% RH till 13 weeks of age. At the end of 13 weeks, all rabbits were exposed to late heat stress as precious described to perform four groups: single late stressed groups; NZWC2, BBC2, and double stressed groups; NZWT2 and BBT2. After late heat stress, six rabbits from each group were slaughtered for blood and muscle tissue collection. The early and late heat stress caused a significant reduction in the blood creatine kinase, lactate dehydrogenase, and high-density lipoprotein and antioxidant enzymes' activity in blood and muscle of both NZW and BB rabbits compared with the control groups. While, the blood total cholesterol, triglycerides, total lipids levels, and lipid peroxidation activity in blood and muscle were significantly increased due to the early and late heat-stressed both breeds compared with the control groups. It could be concluded that the early heat stress at 36°C has negative effects on several physiological indicators and antioxidant activities in the blood and muscle of NZW and BB rabbits.
The role of different dietary Zn sources in modulating heat stress-related effects on some thermoregulatory parameters of New Zealand white rabbit bucks*
Mohamed S. El-Kholy, Mohamed M. El-Mekkawy, Mahmoud Madkour, Nafisa Abd El-Azeem, Alessandro Di Cerbo, et al.
Animal Biotechnology, 2023
The present work was conducted to assess the effect of diets supplementation to heat-stressed buck rabbits with different zinc (Zn) sources on the thermoregulatory and hematobiochemical parameters, and antioxidant status. A total of 24 mature buck rabbits (32-36 weeks of age) were randomly distributed into four groups (6 each). Group 1, non-heat-stressed control (NHSC), was reared in the absence of heat stress (HS) conditions and received the basal diet only. The other three groups (groups 2, 3 and 4) were kept in HS conditions. Group 2, heat-stressed control (HSC), received the basal diet only. The diet supplemented with 75 mg Zn/kg diet either in the inorganic form (Zn sulfate) or in the organic form (Zn picolinate) for groups 3 and 4, respectively. Zn supplementation to rabbits' diets lowered the heat stress-related increase of serum urea, alanine transaminase and malondialdehyde (MDA) concentration. These supplementations also increased the concentration of testosterone under HS conditions. Zn picolinate was more effective than Zn sulfate in restoring serum concentrations of urea, testosterone, and MDA. In conclusion, Zn addition to rabbits' diets from different sources, especially Zn picolinate, exhibits an ameliorative effect against the harmful impact of HS on hematobiochemical parameters and antioxidant status.
Effect of 25-hydroxyvitamin D supplementation, ultraviolet light and their interaction on productive performance, bone characteristics, and some behavioral aspects of broiler chicks
S.A. El-Safty, A. Galal, G.M. El-Gendi, Nafisa A. Abd El-Azeem, M.A. Ghazaly, et al.
Annals of Agricultural Sciences, 2022
Tomato pomace as a nontraditional feedstuff: productive and reproductive performance, digestive enzymes, blood metabolites, and the deposition of carotenoids into egg yolk in quail breeders
Fayiz M. Reda, Mahmoud Madkour, Nafisa Abd El-Azeem, Osama Aboelazab, Sarah Y.A. Ahmed, et al.
Poultry Science, 2022
Performance, Carcass and Bone Characteristics and Histological Structure of Some Organs of Broilers fed Inorganic or Organic Trace Mineral Premix
H. Hassan, A. Samy, A. Youssef, N. A. El-Azeem, M. Madkour, et al.
International Journal of Veterinary Science, 2022
Effect of using inorganic and organic trace minerals premix on performance, carcass and tibia bone characteristics and histological structure of ileum, liver and tibia bone of broiler chicks were investigated. A starter (1-21 d) and a grower (22-35 d) corn-soybean meal diets were supplemented with inorganic trace mineral premix ITM (T1), organic trace mineral premix OTM (T2) or ITM + OTM (T3). The organic mineral premix was of lower element concentrations compared with the inorganic premix. A total of 150 one-day-old Arbor Acres broiler chicks were distributed into three dietary treatments (5 replicates x 10 chicks each). The results showed no significant effect of dietary treatments on body weight gain and feed intake of broiler chickens. Birds fed organic trace minerals showed significant better feed conversion ratio than that of inorganic trace minerals. Organic trace minerals did not significantly affect carcass characteristics or tibia bone measurements except tibia ash%. Histological analysis of ileum revealed that, broiler chicks fed diets with organic minerals significantly decreased the length and crypt depth of villi. The liver tissue and tibia bone were healthy and normal in all experimental groups. It could be concluded that organic trace minerals can be used at lower levels than the recommended levels of inorganic trace minerals not only without a negative impact on performance, but may lead to improve feed efficiency, intestinal and bone histology. Further studies, using other parameters, are needed to prove the impact of different organic minerals sources and levels upon poultry production and environmental pollution.
Hepatic expression responses of DNA methyltransferases, heat shock proteins, antioxidant enzymes, and NADPH 4 to early life thermal conditioning in broiler chickens
Mahmoud Madkour, Mohamad M. Aboelenin, Osama Aboelazab, Ahmed A. Elolimy, Nafisa Abd El-Azeem, et al.
Italian Journal of Animal Science, 2021
Early-life thermal conditioning (TC) in broiler chickens has long-lasting impacts on later life. Therefore, this study aimed to clarify the molecular mechanism by which TC impacts the hepatic expre...
Physiological Responses of Japanese quail breeders to Age at mating and silver nanoparticles administration
International Journal of Veterinary Science, 2019
Effect of age at mating and silver nanoparticles administration on progeny productive performance and some blood constituents in Japanese quail
International Journal of Chemtech Research, 2016
Effect of different levels of moringa oleifera leaves meal on productive performance, carcass characteristics and some blood parameters of broiler chicks reared under heat stress conditions
H.M.A. Hassan, M.M. El-Moniary, Y. Hamouda, Eman F. El-Daly, Amani W. Youssef, et al.
Asian Journal of Animal and Veterinary Advances, 2016
Histological response of broiler’s immune related organs to feeding different direct fed microbials
Nafisa A. Abd El-Aze, Eman F. El-Daly, H.M.A. Hassan, Amani W. Youssef, M.A. Mohamed
International Journal of Poultry Science, 2015
Effect of different anti-stress feed additives on some blood metabolites and lymphoid organs histology in laying Japanese quail
World Applied Sciences Journal, 2014
Growth performance and histological changes in ileum and immune related organs of broilers fed organic acids or antibiotic growth promoter
M.A. Mohamed, Eman F. El- Daly, Nafisa A. Abd El- Azeem, Amani W. Youssef, H.M.A. Hassan
International Journal of Poultry Science, 2014
Performance, caecum bacterial count and ileum histology of broilers fed different direct-fed microbials
H.M.A. Hassan, Amani W. Youssef, Eman F. El- Daly, Nafisa A. Abd El- Azeem, Eman R. Hassan, et al.
Asian Journal of Poultry Science, 2014
The impact of feeding graded levels of distillers dried grains with solubles (DDGS) on broiler performance, hematological and histological parameters
A.W. Youssef, N.A. Abd El-Aze, E.F. El-Daly, M.M. El-Monairy
Asian Journal of Poultry Science, 2013
Effect of sodium formate on laying hen performance, gastrointestinal tract pH and some blood components under heat stress conditions
Amani W. Youssef, Eman F. El-Daly, Nafisa A. Abd El-, M.M. El-Monairy
Asian Journal of Poultry Science, 2013