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| Hultén, Fredrik; Wallenbeck, Anna; Rydhmer, Lotta. |
| Animal welfare concerns require the development of housing systems that allow the animals to express their natural behaviour. One example of this is the group-housing system for lactating sows. The present study aimed at exploring ovarian activity in such a system. Thirty-eight sows farrowing individually outdoors during spring and summer, and indoors during autumn and winter, and group-housed in groups of four during weeks 3–7 of the lactation period, were monitored regarding reproductive functions, behaviour and production during their first to fourth lactation period. Average ovulation frequency during lactation was 47%. Only 50% of these ovulating cases were accompanied by a standing oestrus. Lactational ovulation frequency was higher in later parities... |
| Tipo: Journal paper |
Palavras-chave: Pigs. |
| Ano: 2006 |
URL: http://orgprints.org/12674/1/j.1439%2D0531.2006.00691.x?cookieSet=1 |
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