5Shurson G C, Hogberg M G, DeFever N, et al. Effects of adding fat to the sow lactation diet on lactation and rebreeding performance[J]. J Anim Sci, 1986, 62(3): 672-680.
6Tihon S L, Miller P S, Lewis A J, et al. Addition of fat to the diets of lactating sows: I. Effects on milk production and composition and carcass composition of the litter at weaning[J]. J Anim Sci, 1999, 77(9): 2491-2500.
7Lauridsen C, Danielsen V. Lactational dietary fat levels and sources influence milk composition and performance of sows and their progeny[J]. Livest Prod Sci, 2004, 91: 95-105.
8Pettigrew J E, Moser R L. Swine nutrition[M]. Boston: Butterworth- Heinemann Press, 1991 : 133-145.
9Shurson G C, Irvin K M. Effects of genetic line and supplemental dietary fat on lactation performance of Duroc and Landrace sows [J]. J Anim Sci, 1992, 70: 2942-2949.
10Schoenherr W D, Stahly T S, Cromwell G L. The effects of dietary fat or fiber addition on energy and nitrogen digestibility in lactating, primiparous sows housed in a warm or hot environment[J]. J Anim Sci, 1989, 67(2): 473-481.