6Abe F, Ishibashi N, Shimamura S. Effect of administration of bifidobacteria and lactic acid bacteria to newborn calves and piglets[J]. J Dairy Sci, 1995, 78:2838-2846.
7Heinrichs A J, Wells S J, Losinger W C. A study of the use of milk replacers for dairy calves in the United States[J]. J Dairy Sci,1995, 78(12) :2831-2837.
8Hogg K. Internal parasites of yak(Bos grunniens) of the Gannan,Gansu province,P. R. China[A]. Proceedings of the 4th international congress on yak held in Chengdu, P.R. China, 2004 [C]. International Livestock Research Institute, 2004,335 -337.
9Kaneene J B, Warnick L D, Bolin C A,et al. Changes in tetra- cycline susceptibility of enteric bacteria following switching to nonmedieated milk replacer for dairy calves[J]. J Clin Microbiol, 2008, 46(6):1968-1977.
10Waller P J. Reindeer(Rangifer tarandus) and yak(Bos(Poephagus) grunniens): Disparate animal species-similar environ- ment,management and parasite problems[A]. Proceeding of the 3rd international congress on yak held in Lhasa, P, R. China, 2000[C]. International Livestock Research Institute, 2002,429 -438.