1ZHAO Y,LIU X,MO D,etal.Analysis of reasons for sow culling and seasonal effects on reproductive disorders in Southern China[J].Animal reproduction science, 2015,159: 191-197.
2QUINIOU N,NOBLETJ.Influence of high ambient temperatures on performance of multiparous lactating sows[J]. Journal of animal science, 1999,77(8) :2124-2134.
3THAKER M Y C,BILKEIG. Lactation weight loss influences subsequent reproductive performance of sows[J]. Animal reproduction science, 2005,88(3): 309-318.
4PRUNIER A,DE BRAGAN A M M,LE DIVIDICH J.Influence of high ambient temperature on performance of reproductive sows[J]. Livestock Production Science, 1997,52(2): 123-133.
