1[1]Fraser D,Behaviouy perspetives on piglets survival[J].J ReprodFertil, 1990, 40: 355-370.
2[2]Anon.A Moder guide book for the Ausrtialian pig behaviour[M]. Synder, Austrilia; Associated Gneral Publications Pth.Ltd,1944.194.
3[3]English P R,Smith W I,Maclean A.The sow improving her efficiency[J].Ipswich V K Farmin Press Ltd,1977:311.
4[4]English P R,Smith W J.Some causes of death in Neonatal piglets[J].Vaterinary Annual,1975,15: 95-104.[J].Vaterinary Annual,1975,15:95-104.
5[5]Edwards S A,Malkin S ].Ananalysis of piglet mortality with behaviour observations[J].Animal Production,1986,42:470.
6[6]Robertson J B,Laird R,Hall J K S.A comparison of two indoor.Farrowing Systems for sows[J].Animal Production,1966,8:171 178.
7[7]Cronin G M,Smith J A.Effects of accomodation type and strnwbedding around parturition and during lactation on the behaviour of primiparous sows and survival and growth of piglets to weaning[J].AppliedAnimal Behaviour Science,1992,33:191-208.
8[8]Curtis S Responses of the piglets to perinatal stressors[J].J Animal Science,1974,38:1031-1036.
9[9]Baxter M R,Schwaller C E.Space requirements for sows inconfinement[M].In:Animal Housing and welfare.(Editedby S H Baxter,M RBaxter and J A D Mac Cormack)Hague,Nethedands,Martinus Nijhoff,1983.276-311.
10[10]KilgourR,Dalton C.Farrowing pens and Behaviour[M].In: Livestock Behaviour:a practical quide.London,VK;Granada,1984.10-191.