Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

    We have a manual that explains all the features 

Record number 369460
Title Effects of mixed housing of birds from two genetic lines of laying hens on open field and manual restraint responses
Author(s) Uitdehaag, K.A.; Rodenburg, T.B.; Hierden, Y.M. van; Bolhuis, J.E.; Toscano, M.J.; Nicol, C.J.; Komen, J.
Source Behavioural Processes 79 (2008)1. - ISSN 0376-6357 - p. 13 - 18.
Department(s) Animal Breeding and Genetics
ID - Dier en Omgeving
Adaptation Physiology
Publication type Refereed Article in a scientific journal
Publication year 2008
Keyword(s) japanese-quail chicks - domestic chicks - feather pecking - tonic immobility - adrenocortical-response - thyroid-hormones - beta-carboline - social stress - behavior - fear
Abstract Birds from Rhode Island Red (RIR) origin show a lower fear response and less feather pecking than birds from White Leghorn (WL) origin. This study investigated whether responses in fear eliciting tests were affected if RIR and WL birds were housed together. Experimental groups contained either birds from one line only ('pure' groups) or an equal number of RIR and WIL birds ('mixed' groups). These arrangements were maintained from hatch onwards, throughout the rearing and laying period. Birds were subjected to open held tests at 5-6 weeks and 17-18 weeks of age and to manual restraint tests at 7-8 weeks and 24 weeks of age. RIR birds were more active in both open field tests and in the manual restraint test at 24 weeks of age as compared with WL birds. RIR birds from pure groups were more active in the open field test at 17-18 weeks and in the manual restraint test at 24 weeks of age than RIR birds from mixed groups. These results suggest that otherwise low fearful RIR birds may adopt a higher fear response if they are housed together with more fearful conspecifics. These effects do not emerge until after 8 weeks of age. Published by Elsevier B.V.
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