Season and parity effects on the feed intake of lactating sows in an Australian commercial piggery

Abstract

Insufficient nutrient consumption during a sow's lactation period will cause a loss of body condition. This can adversely affect the subsequent reproductive performance of the sow and can lead to an increase in sow cull rates through extended weaning to service intervals or failure to enter oestrus (Eissen et al., 1999). Gilts, due to lower body reserves, are particularly prone to weight loss during lactation. Numerous factors influence the feed consumption of lactating sows including parity number and seasonal effects. The aim of this paper was to investigate the effects of season and parity and their interaction on the feed consumption of sows in a south eastern Queensland (Kalbar) commercial piggery.