1Grandhi R R, Strain J H. Effect of biotin supplementation on reproductive performance and foot lesions in swine [J]. Can J Anim Sci, 1980, 60:961-969.
2Moser R L,Pettigrew J E,Cornelius S G,et al. Feed and energy comsumption by lactating sows as affected by supplemental dietary fat [A]. In:Minn Swine Res[M]. St Paul: University of Minnesota Press,1985.
3Shurson G C,Hogberg M G, DeFever N,et al. Effects of adding fat to the sow lactation diet on lactation and breeding performance[J]. J Anim Sci,1986, 62:672-680.
