5NRC, Nutrient Requirments of Swine. National Academic Press.washington. D. C, 1998
6W. Grala, M. W. A. Verstegen, P. van Leeuwen etcl. Nitrogen balance of pigs as affected by feedstuffs causing different endogenous nitrogen flow at the terminal ileum [ J] . Livestock production Science. 1997,48:143 ~ 145
7Grala, M.W.A. Verstegen, A.J.M. Jansman, ectl. Effects of ileal endogenous nitrogen losses and dietary amino acid supplementation on nitrogen retention in growing pigs[J] . Animal Feed Science and Technology. 1999,80:207 ~ 222
8胡坚.动物饲养学[M].长春:吉林科学技术出版社,1999:第4版.256-257.
9Adams K L,Jensen A H.High-fat maize in diets for pigs and sows[J].Anim Feed Sci.,1987,17:201-212.