2J. D Carve, W.A.Walker. The role of nucleotides in human nutrition[J]. The Journal of nutritional Biochemistry, 1995,6(2):58-72.
3Hartma IP A, Hays V W, Baker R O, et al. Digestive enzyme development in the young pig [J]. J. Anita. Sci., 1961, 20:114-123.
4Lindemann M D, Cornelius S G, El Kandelgy S M, et al. Effect of age, Weaning and diet on digestive enzyme levels in the piglet[J]. J. Anita. Sci., 1986, 62: 1298-1307.
5Owsley W F, Orr D E, Tribble L R. Effect of age and diet on the development of the pancreas and the sythesis and secretion of development of the pancreatic enzymes in the young pig [J]. J. Anim. Sci., 1986, 63: 497-504.
6Jensen M S, Jcsen S K, Jakobsen K. Development of digestive enzymes in pigs with emphasis on lipolytie activity in the stomach and pancreas [J]. J. Anim. Sci., 1997, 75: 437-445.
9Witte D P, Wiginton D A, Hutton J J, et al. Cordinate developmental regulation of purine catabolic enzyme expression in gastrointestinal and postimplantation reproductive tracts[J]. J Cell Biology, 1991, 115: 179-190.
10Brunser D, Espinoza M, Cruchet S, et al. Effect of dietary nuckeotides supplementation on diarrhea disease in infants[J]. Actapediatr, 1994, 83: 188-191.
