8Kien C L, Chang J C, Cooper J R, et al. Effects of prefeeding a prebiotic on diarrhea and colonic cell proliferation in piglets fed lactulose[J]. Journal of Parenteral and Enteral Nutrition, 2004, 28: 22-26.
9Miller B G, James P S, Smith M W, et al. Effect of weaning on the capacity of pig Intestinal villi to digest and absorb nutrients[J]. J Agric Sci Camb, 1986, 107: 579-589.