Use of hatch date for broiler breeder production planning

Data on 109 batches of broiler breeders belonging to six strains and bred in conventional sheds were analyzed to determine the possible influence of natural day length cycle phase on age at start of laying, at sexual maturity, and at peak egg production. The dependence of these variables on date of...

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Veröffentlicht in:	Poultry science 1999-04, Vol.78 (4), p.501-504
Hauptverfasser:	Vandenberghe, N, Ceular, A.L, Moreno, A
Format:	Artikel
Sprache:	eng
Schlagworte:	age at first egg Animal Husbandry - methods Animals biological rhythms broiler chickens Chickens - growth & development egg production equations Female hatching date hens Oviposition Photoperiod prediction Regression Analysis Seasons Sexual Maturation sexual maturity Species Specificity strain differences
Online-Zugang:	Volltext
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