An allometric-autoregressive approach to poultry development.
1. The relative rates of development in a commercial layer and a broiler strain of chicken fed 180 or 230 g crude protein/kg were investigated by the use of the allometric-autoregressive model. Development was divided into pre-pubertal (0 to 8 weeks) and pubertal phases (8 to 22 weeks). 2. Significant strain effects were observed, at all ages, in rates of gain of live (L) body mass, carcass (C) mass, non-carcase (N) mass and empty-body (EB) mass as well as C, N and EB moisture, protein and fat content. 3. Significant dietary effects were observed in C and EB fat in the pre-pubertal phase and L mass, N protein and C fat in the subsequent pubertal period.
Belt
M J
MJ
Department of Livestock Science, University of Pretoria, Republic of South Africa.
Casey
N H
NH
Smith
G A
GA
D000273:Adipose Tissue / Q000254:growth & development; D000818:Animals; D001823:Body Composition; D001835:Body Weight; D002645:Chickens / Q000235:genetics / Q000254:growth & development*; D004044:Dietary Proteins / Q000008:administration & dosage; D004435:Eating; D005838:Genotype; D008460:Meat / Q000032:analysis; D011506:Proteins / Q000032:analysis; D012044:Regression Analysis; D012741:Sexual Maturation / Q000502:physiology*
D004044:Dietary Proteins; D011506:Proteins