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Energy allocation and behaviour in the growing broiler chicken.

ABSTRACT: Broiler chickens are increasingly at the forefront of global meat production but the consequences of fast growth and selection for an increase in body mass on bird health are an ongoing concern for industry and consumers. To better understand the implications of selection we evaluated energetics and behaviour over the 6-week hatch-to-slaughter developmental period in a commercial broiler. The effect of posture on resting metabolic rate becomes increasingly significant as broilers grow, as standing became more energetically expensive than sitting. The proportion of overall metabolic rate accounted for by locomotor behaviour decreased over development, corresponding to declining activity levels, mean and peak walking speeds. These data are consistent with the inference that broilers allocate energy to activity within a constrained metabolic budget and that there is a reducing metabolic scope for exercise throughout their development. Comparison with similarly sized galliforms reveals that locomotion is relatively energetically expensive in broilers.

SUBMITTER: Tickle PG

PROVIDER: S-EPMC5852157 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature

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Energy allocation and behaviour in the growing broiler chicken.

Tickle Peter G PG Hutchinson John R JR Codd Jonathan R JR

Scientific reports 20180314 1

Broiler chickens are increasingly at the forefront of global meat production but the consequences of fast growth and selection for an increase in body mass on bird health are an ongoing concern for industry and consumers. To better understand the implications of selection we evaluated energetics and behaviour over the 6-week hatch-to-slaughter developmental period in a commercial broiler. The effect of posture on resting metabolic rate becomes increasingly significant as broilers grow, as standi ...[more]

PMID: 29540782

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Energy allocation and behaviour in the growing broiler chicken.

Publications

Energy allocation and behaviour in the growing broiler chicken.

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