INCUBATION OF HEN EGGS ON PROLONGATION OF USAGE PERIOD OF THE PARENT STOCK
Journal Title: Науковий вісник Національного університету біоресурсів і природокористування України. Серія : Технологія виробництва і переробки продукції тваринництва - Year 2017, Vol 1, Issue 271
Abstract
In the conditions of a breed reproductor farm, the age-related changes in the level of egg productivity of hens of specialized egg crosses have been studied with the extension of their productive use to 80 weeks. The incubation qualities of eggs were also studied. A significant influence of the age of hens on their egg productivity and the quality of hatching eggs was established. Egg productivity and incubatory quality of hen eggs cross "Hisex white" is higher than the hen cross "Hisex brown". Using the hens of the parent herd of the crosses up to the 80-week-old age provides an opportunity to obtain 360,82 and 386,39 eggs for the "brown" and "white" cross, respectively. With the age of the birds, we observe a tendency for a gradual decrease in the incubation characteristics of the eggs. But for each cross examined, it is possible to distinguish specific features with prolonged use. The level of incubation qualities of eggs of hens of 80-week-old age is quite high: egg fertilization is 94.1 and 87.5 %, hatchability is 74.2 and 79.0 %, and chick hatching is 69.9 and 69.1 % for crosses "Hisex brown" and "Hisex white" respectively. This indicates the advisability of extending the use of the hens of the parent flock for obtaining hatching eggs.
Authors and Affiliations
O. A. Honcharyk, N. P. Prokopenko
Keywords
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