Genetic variation in laying hens and phenotypic correlations of feed consumption corrected for body weight and egg production

Bordas, A.; Merat, P.

Annales de Genetique et de Selection Animale 6(3): 369-379


ISSN/ISBN: 0003-4002
Accession: 000101953

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Individual feed consumption of laying hens from 3 populations was measured during 3 successive 28-day periods; corrected consumption was calculated as the deviation of the observed from the theoretical consumption, the latter being derived from a multiple regression equation involving body weight, variation in body weight, and total weight of eggs laid during the experimental period. Appreciable genetic variance of corrected consumption was evident. There were significant phenotypic correlations between corrected consumption and daily water consumption (0.30), wattle length at 10 mth of age (0.19) and shank length at 10 mth (0.13).