5Hoving L L, Soede N M, Graat E A M, et al. effect of live 'weight development and reproduction in first parity on reproductive performance of second parity sows[J].Animal ReproductionScience, 2010(122):82-89.
6Thaker M Y C, Bilkei G. Lactation weight loss influ- ences subsequent reproductive performance of sows [J].Animal Reproduction Science, 2005(88):309-318.
10L.L.hoving,N.M.Soede,E.A.M.Graat. effect of live weight development and reproduction in first parity on reproductive performance of second parity sows[J].Animal Reproduction Science,2010,(122):82-89.