Relationship between broiler breeder's age and egg weight loss and embryonic mortality during incubation in large-scale conditions

Journal of Applied Poultry Research

Volumn 10, Issue 3, 2001, Pages 221-227

  Tona, K ^a   Bamelis, F ^a   Coucke, W ^a   Bruggeman, V ^a   Decuypere, E ^a  

^a UNIVERSITY OF LEUVEN   (Belgium)

Author keywords

Egg weight loss; Embryonic mortality; Flock age

Indexed keywords

EID: 0012844911     PISSN: 10566171     EISSN: None     Source Type: Journal    
DOI: 10.1093/japr/10.3.221     Document Type: Article

References (17)

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17. A SAS generalized linear model with a logit was used to analyze the data. In relation Io the age of breeders and absolute and relative weight losses, we analyzed the proportions of hatched chicks and the relationship between hatchability and relative egg weight loss. The proportions of total dead embryos, early and late dead embryos, malpositioned and alive in shell, taking into account fertile eggs, were analyzed in relation to the age of breeders. A probability value of 0.05 indicated significance. The graphs were fitted in Excel for Windows using the average data according to the age.