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The commercial restricted feeding programme of broiler breeders has a major negative effect on welfare, as the birds are continuously hungry. Objective parameters of hunger are needed to evaluate new management or feeding systems that may alleviate hunger and thus improve broiler breeder welfare. The aim of this experiment was to develop such parameters. Female broiler breeders (Hybro G), n=10 per...
This paper describes a fast and simple technique for cannulation of the vena cutanea ulnaris (wing vein) in ad libitum fed growing broiler breeders of 5 weeks of age. Twenty-four hours after cannulation, blood was sampled every 4 h during 24 h. The circadian rhythm in plasma corticosterone and catecholamine concentrations was determined for the first time in growing broiler breeders. During the light...
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