RE/ POST-HATCH NANO-ZINC SUPPLEMENTATIONS EFFECTS ON HATCHABILITY, GROWTH PERFORMANCE, CARCASS TRAITS, BONE CHARACTERISTICS AND PHYSIOLOGICAL STATUS OF INSHAS CHICKS
Two trials were conducted to evaluate the efficiency of nano-zinc (ZnO-NPs) supplementations on hatchability, growth performance, carcass traits, bone characteristics and physiological status of Inshas chick.In the initial experiment, on day 18 of the incubation 1020 eggs in four groups (n=85, r=3) were injected with ZnO-NPs at levels of 0, 60, 80, and 100μg /egg.Results showed that in ovo injection with ZnO-NPs at different levels has no significant effect on the hatched chick weight. In addition, nano-zinc at the level up to 60µg/ egg has no adverse effect on hatchability percentage.In the second experiment 480 one-day-old unsexed chicks from the initial experiment with an initial weight of 33.64 ±0.98gwere fed on a diet containing nano-zinc at the level of 0 or 30 mg / kg diet. The interaction of ZnO-NPs pre/post-hatch supplementations showed a significant effect on final body weight, weight gain, feed intake, and feed conversion ratio and the non-treated chicks in the control group showed the lowest values. The highest spleen weightwas recorded at the level of 100 μg ZnO-NPs/egg. The highest content of zinc in the breast meat was observed in chicks supplemented with 100μg/egg and fed 30 mg/ kg diet. Tibia bone ash content increased with increasing nano-zinc in the diet, meanwhile tibia bone Zn and P contents were increased with increasing nano-zinc in ovo supplementation. Chicks fed 30 mg ZnO-NPs/ kg diet showed highest values for tibia length, thickness when pre-hatch eggs supplemented with 100 μg ZnO-NPs/egg and the highest strength when pre-hatch supplemented with 60 μg ZnO-NPs/egg. ZnO-NPs in ovo supplementation had no significant effect on serum biochemical parameters. Total protein, albumin, ALT, AST, HDL, LDL, and serum Zn content values were increased with increasing nano-zinc in the diet except LDL.The highest phagocytic activities were observed in chicks fed 30 mg/ kg diet and pre-hatched with 60, 80, and 100 μg ZnO-NPs/egg.
El-Rayes, T., El-Damrawy, S., El-Deeb, M., & Adel Abdelghany, I. (2019). RE/ POST-HATCH NANO-ZINC SUPPLEMENTATIONS EFFECTS ON HATCHABILITY, GROWTH PERFORMANCE, CARCASS TRAITS, BONE CHARACTERISTICS AND PHYSIOLOGICAL STATUS OF INSHAS CHICKS. Egyptian Poultry Science Journal, 39(4), 771-789. doi: 10.21608/epsj.2019.63532
MLA
T. Kh. El-Rayes; S. Z. El-Damrawy; M. H. El-Deeb; I. Adel Abdelghany. "RE/ POST-HATCH NANO-ZINC SUPPLEMENTATIONS EFFECTS ON HATCHABILITY, GROWTH PERFORMANCE, CARCASS TRAITS, BONE CHARACTERISTICS AND PHYSIOLOGICAL STATUS OF INSHAS CHICKS", Egyptian Poultry Science Journal, 39, 4, 2019, 771-789. doi: 10.21608/epsj.2019.63532
HARVARD
El-Rayes, T., El-Damrawy, S., El-Deeb, M., Adel Abdelghany, I. (2019). 'RE/ POST-HATCH NANO-ZINC SUPPLEMENTATIONS EFFECTS ON HATCHABILITY, GROWTH PERFORMANCE, CARCASS TRAITS, BONE CHARACTERISTICS AND PHYSIOLOGICAL STATUS OF INSHAS CHICKS', Egyptian Poultry Science Journal, 39(4), pp. 771-789. doi: 10.21608/epsj.2019.63532
VANCOUVER
El-Rayes, T., El-Damrawy, S., El-Deeb, M., Adel Abdelghany, I. RE/ POST-HATCH NANO-ZINC SUPPLEMENTATIONS EFFECTS ON HATCHABILITY, GROWTH PERFORMANCE, CARCASS TRAITS, BONE CHARACTERISTICS AND PHYSIOLOGICAL STATUS OF INSHAS CHICKS. Egyptian Poultry Science Journal, 2019; 39(4): 771-789. doi: 10.21608/epsj.2019.63532
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