3Harrell R J,Thomas M J,Boyd R D,et al.Effect of porcine somatotropin administration in young pigs during the growth phase from 10 to 25 kilograms[J].Journal of Animal Science,1997,25(12):3 152-3 160.
4Hodge R W.Efficiency of food conversion and body composition of the preruminant lamb and the young pig[J].Br J Nutr,1974,32(1):113-126.
5Kertiles L P,Anderson L L.Effect of relaxin on cervical dilatation,partuntion and lactation in the pig[J].Biol Reprod,1979,21(1):57-68.
6Lewis A J,Speer V C,Haught D G.Relationship between yield and composition of sows' milk and weight gains of nursing pigs[J].J Anim Sci,1978,47(3):634-638.
7Bell A W.Regulation of organic nutrient metabolism during transition from late pregnancy to early lactation[J].J Anim Sci,1995,73(9):2 804-2 819.
8Castillo C,Hernandez J,Bravo A,et al.Oxidative status during late pregnancy and early lactation in dairy cows[J].Vet J,2005,169(2):286-292.
9Castillo C,Hernandez J,Valverde I,et al.Plasma malonaldehyde (MDA) and total antioxidant status (TAS) during lactation in dairy cows[J].Res Vet Sci,2006,80(2):133-139.
10Doepel L,Lapierre H,Kenelly J J.Peripartum performance and metabolism of dairy cows in response to prepartum energy and protein intake[J].J Dairy Sci,2002,85(9):2 315-2 334.
