4Funderburke D W,Seerley R W.The effects of postweaning stressors on pig weight change,blood,liver and digestive tract characteristics[J].Journal of Animal Science,1990,68(222):155-162.
5Hampson D J.Alterations in piglet small intestinal structure at weaning[J].Research in Veterinary Science,1986,40:32-40.
6Lindemann M D,Cornelius S G,Kandelgy S M,et al.Effect of age,weaning and diet on digestive enzyme levels in the piglet[J].Journal of Animal Science,1986,62:1298-1307.
7Wilson A D,Stokes C R,Bourne F J.Effect of age on absorption and immune responses to weaning or introduction of novel dietary antigens in pigs[J].Research in Veterinary Science.1989,46:180-186.
8Miller B G,Newby T J,Strokes C R,et al.The importance of antigen on the cause of postweaning diarrhea in Pigs[J].American Journal of Veterinary Research,1984,45(9):1730-1733.
9Miller B G.Newby T J,Stokes C R,et al.Influence of diet on postweaning malabsorption and diarrhea in the pig[J].Research in Veterinary Science.1984.36:187-193.
10Goodband R D,Hines R H.An evaluation of barley in starter diets for swine[J].Journal of Animal Science,1988,66:3086-3093.
