5Cera K R,D. C. Mahan,R. F. Cross. Effect of age,weaning and postweaning diet on small intestinal growth and jejunal morphology in young swine[J].Anim. Sci.,1988,66:574
6Cera K R,D. C, Mahan,G. A. Reinhart, Apparent fat digestibility and performance responses of postweaning swine fed diets supplemented with coconut oil,corn oil or tallow[J].Anim.Sci.,1989,67:2 040
7ASHILD K. Influence of age on lipase, amylase, and protease activities in pancreatic tissue and intestinal contents of young turkeys [J]. Poultry Science,1989,68:1561-1568.
8CERA. K R, MAHAN D C. Effect of weaning, week postweaning and diet composition on pancreatic and small intestine luminal lipase response in young swine[ J]. Animal Science, 1990a, 68: 384-391.
