Abstract
This paper summarizes the current state of knowledge of the European wild boar reproduction. Data on reproductive performances established in several natural wild populations show a general pattern of seasonal breeding. Although the boars are reproductive all year round, the sows exhibit an annual cycle of ovarian activity, an anoestrus period, characterized by non-ovulatory levels of plasma oestrogen and basal plasma progesterone values, occurring during the summer and autumn months. A seasonal rhythm in plasma prolactin levels has been shown, following the seasonal changes in natural daylength. These results suggest that the seasonal differences in domestic sow reproduction might be a vestige of an ancestral photoperiodic rhythm.
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© 1985 ECSC, EEC, EAEC, Brussels-Luxembourg
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Mauget, R. (1985). Seasonal Anoestrus in Wild Sows. In: Ellendorff, F., Elsaesser, F. (eds) Endocrine Causes of Seasonal and Lactational Anestrus in Farm Animals. Current Topics in Veterinary Medicine and Animal Science, vol 31. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-5026-9_13
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DOI: https://doi.org/10.1007/978-94-009-5026-9_13
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