Title of article :
Embryo Specifications at 19-d of Incubation in Different Ross Boiler Breeders Age
Author/Authors :
Hajkhodadadi ، I. نويسنده Department of Animal Science, Faculty of Agriculture and Natural Resources, Arak University, 38156-8-8349 Arak, Iran. ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Pages :
4
From page :
720
To page :
723
Abstract :
480 hatching eggs were obtained from commercial, Ross 308 breeder at 33 and 53 weeks of age, 240 eggs for each breed age. Eggs individually weighed before and after incubation and incubated following usual hatchery practices. Individual embryo weight was recorded at 19d of incubation, relative embryo weight was calculated. A sample of embryo and residual yolk sac was used for measurement of chemical composition in the yolk and albumen base on method of AOAC, 1990. A completely randomized design was used. Eggs weight from Old group was heavier (P < 0.05) compared to eggs from Young group, 63.02 and 52.72 g, respectively. Result indicated that embryo from O group had the heaviest weights in compare with the Y group, 36.16 g and 31.48 g respectively. There was no significant differences (P > 0.05) between Y and O group in embryo dry matter, ash, fat, crude protein and nitrogen free extract content, although embryo fat content were increased numerically. There was significant differences (P < 0.05) in embryo length at 19-d of incubation so embryo from O group breeders are found to had more embryo length than embryo in Y group. There was no significant differences (P > 0.05) between Y and O group in heart weight. Our result revealed that as breeder age advanced, embryo weight, length increased, and embryo from old group had more residual yolk sac and this may cause more malabsorbtion of yolk sac during incubation.
Journal title :
International Journal of Agriculture Innovations and Research
Serial Year :
2014
Journal title :
International Journal of Agriculture Innovations and Research
Record number :
2030799
Link To Document :
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