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Impact of heat stress on egg quality in layer hens supplemented with l-ascorbic acid and dl-tocopherol acetate.

Joachim J. Ajakaiye ; Department of Zootechnics and Veterinary Medicine, Faculty of Agricultural Sciences, Central University
Alcides Perez-Bello ; Department of Zootechnics and Veterinary Medicine, Faculty of Agricultural Sciences, Central University
Angel Mollineda-Trujillo ; Department of Zootechnics and Veterinary Medicine, Faculty of Agricultural Sciences, Central University


Puni tekst: engleski pdf 168 Kb

str. 119-132

preuzimanja: 692

citiraj


Sažetak

The aim of the experiment was to investigate the effects of heat stress on egg quality profi le in layer hens supplemented with vitamins C and E. A total of 720 L33 layer hens at 39 weeks old, were divided into four groups of 180 birds. One group was fed a basal diet (control) and treatment groups were fed a basal diet supplemented with 150 mg of l-ascorbic acid/kg of diet (Vit. C group), 150 mg of α-dl-tocopherol acetate/kg of diet (Vit. E group), while the last group was supplemented with 150 mg of l-ascorbic acid/kg of diet plus 150 mg of α-dl-tocopherol acetate/kg of diet (Vit C + E group). Egg, albumen and eggshell weights were higher (P<0.05) and (P<0.005) in vitamins E and C + E groups when compared to vitamin C and control groups. Egg yolk was higher (P<0.05), (P<0.005) and (P<0.0005) in the vitamin C + E group, compared to the vitamin E and vitamin C treated groups and control respectively. Egg shell thickness, egg resistance and specifi c gravity showed (P<0.05) and (P<0.005) in the vitamins C + E group, compared to the vitamin C and E groups, and control. Haugh Unit was higher (P<0.05) and (P<0.005) in the vitamins C + E treated group compared to vitamin C and E treated groups, and control. The results suggest that the supplementation of antioxidant vitamins had a benefi cial effect on egg quality in heat stressed layer hens.

Ključne riječi

heat stress; vitamin C; vitamin E; egg quality; layer hens

Hrčak ID:

66707

URI

https://hrcak.srce.hr/66707

Datum izdavanja:

21.2.2011.

Podaci na drugim jezicima: hrvatski

Posjeta: 1.815 *