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Growth, abdominal fat content, heat production and plasma hormone levels of naked-neck and control broiler chickens

Published online by Cambridge University Press:  25 May 2016

E. Decuypere ,
J. Buyse ,
P. Mérat ,
J. Zoons  and
J. Vloeberghs
E. Decuypere
Affiliation:
Leuven Poultry Research Group, K.U. Leuven, Kardinaal Mercierlaan 92, 3001 Heverlee, Belgium
P. Mérat
Affiliation:
Laboratoire de Génétique Factorielle, INRA, Domaine de Vilvert, 78352 Jouy-en-Josas, France
J. Zoons
Affiliation:
Leuven Poultry Research Group, K.U. Leuven, Kardinaal Mercierlaan 92, 3001 Heverlee, Belgium
J. Vloeberghs
Affiliation:
Leuven Poultry Research Group, K.U. Leuven, Kardinaal Mercierlaan 92, 3001 Heverlee, Belgium
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Abstract

The depressing effect of high rearing temperature (30°C) on body weights of heterozygous naked-neck broiler chickens was apparently less pronounced than in control broiler chickens but no effect of genotype, rearing temperature or interaction on abdominal fat pad content was found. Both genotype and rearing temperature affected plasma tri-iodothyronine but not growth hormone or insulin-like growth factor 1 levels in plasma. Rearing temperature of 20°C or 30°C had effect neither on the slope of the thermoregulatory heat production curves nor on the lower critical temperature in either genotypes except at 4 weeks of age.

Keywords

abdominal fatbroilersgrowthheat productionhormones

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Type
Research Article
Information
Animal Production , Volume 57 , Issue 3 , December 1993 , pp. 483 - 490
Copyright
Copyright © British Society of Animal Science 1993

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