Reproduction performances and conditions of group-housed non ...
Reproduction performances and conditions of group-housed non ...
Reproduction performances and conditions of group-housed non ...
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Contents<br />
Summary……………………………………………………………………..1<br />
Sammendrag (Danish)……………………………………………………….5<br />
Background <strong>and</strong> aim…………………………………………………………9<br />
Outline <strong>of</strong> this thesis………………………………………………………..13<br />
How does <strong>group</strong> housing vary in practice?…………………………………15<br />
Paper I. Effect <strong>of</strong> energy intake on pregnancy rate <strong>and</strong> litter size with<br />
particular reference to <strong>group</strong> <strong>housed</strong> <strong>non</strong>-lactating sows – a review………21<br />
Paper II. Stress <strong>and</strong> fear as possible mediators <strong>of</strong> reproduction problems<br />
In <strong>group</strong> <strong>housed</strong> sows: A review…………………………………………..49<br />
Paper III. Indicators <strong>of</strong> feed intake, fear <strong>and</strong> social stress in commercial herds with<br />
<strong>group</strong> <strong>housed</strong> <strong>non</strong>-lactating sows………………………………………….59<br />
Paper IV. Relation between reproduction performance <strong>and</strong> indicators <strong>of</strong><br />
feed intake, fear <strong>and</strong> social stress in commercial herds with <strong>group</strong> <strong>housed</strong><br />
<strong>non</strong>-lactating sows…………………………………………………………87<br />
General Discussion………………………………………………………..103<br />
Conclusions………………………………………………………………..109<br />
Appendix 1. Litter size <strong>and</strong> farrowing rate, which physiological<br />
processes may go wrong <strong>and</strong> why? ………………………..…………………. 111
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