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Comparison of pig behaviour when given a sequence of enrichment objects or a chain continuously

Published online by Cambridge University Press:  01 January 2023

V Van de Perre ,
B Driessen ,
J Van Thielen ,
G Verbeke  and
R Geers
V Van de Perre*
Affiliation:
KU Leuven, Laboratory for Quality Care in Animal Production, Bijzondere weg 12, B-3360 Lovenjoel, Belgium
B Driessen
Affiliation:
KU Leuven, Laboratory for Quality Care in Animal Production, Bijzondere weg 12, B-3360 Lovenjoel, Belgium KH Kempen, Kleinhoefstraat 4, B-2440 Geel, Belgium
J Van Thielen
Affiliation:
KH Kempen, Kleinhoefstraat 4, B-2440 Geel, Belgium
G Verbeke
Affiliation:
KU Leuven, Interuniversity Institute for Biostatistics and Statistical Bioinformatics, Kapucijnenvoer 35, B-3000 Leuven, Belgium
R Geers
Affiliation:
KU Leuven, Laboratory for Quality Care in Animal Production, Bijzondere weg 12, B-3360 Lovenjoel, Belgium
*
* Contact for correspondence and requests for reprints: Vincent.VandePerre@biw.kuleuven.be
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Abstract

Tail biting is a major problem in modern pig (Sus scrofa) production and results in a reduction of animal welfare and productive performance. Biting behaviour has been shown to be decreased by the use of enrichment objects. In this study, 108 pigs housed in a room with 12 pens were observed and a sequence of seven different enrichment materials was tested. Gilts and barrows were housed together and received a new enrichment object each week starting from three different points in the fattening period, ie 20, 40 or 70 kg bodyweight. Toy-contact and biting-penmate behaviour were observed during one hour at day of introduction and five days later. A continuous sequence of seven enrichment objects reduced biting-penmate behaviour and the number of wounds compared to providing only a single toy (chain). This study also confirmed that not every object was feasible as an enrichment object for growing pigs. Generally, the highest toy contact was observed together with the highest biting-penmate behaviour. Most toy-contact and biting-penmate behaviour was observed between 20 and 40 kg bodyweight and was decreasing over age. Providing a sequence of toys for the first time induced toy-contact behaviour while reducing bitingpenmate behaviour but decreased after applying the same sequence for the second or third time. The presence of a single chain or a sequence of different toys had no effect on growth and feed conversion. The ideal sequence should maintain toy-contact behaviour without competition in order to avoid biting-penmate behaviour and reduced animal welfare.

Keywords

animal welfarebiting-penmate behaviourenrichment objectsgrowthpigtoy-contact behaviour
Type
Research Article
Information
Animal Welfare , Volume 20 , Issue 4 , November 2011 , pp. 641 - 649
Copyright
© 2011 Universities Federation for Animal Welfare

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