1HAMPOSON D J, HINTON M, KIDDER D E. Coliform numbers in the stomach and small intestine of health pigs following weaning at three weeks of pigs [J].Journal of Comparative Pathology, 1985,95:353～362.
2Kyriakis S C .New aspects of the prewention and/or treatment of the major stress induced diseases of the early weaned piglet[J]. Pig News and Information, 1989,10(2):177～181.
3Li D F ,Nelssen J L,Reddy P G ,et al .Measuring suitability of soybean products for early-weand pigs with immunological criteria [J]. J Anim sci,1991,69:3 078～3 299.
