9H.M.Dann, J.K.Drackley, G.C.McCoy ,etc. Effect of Yeast Culture on Prepartum Intake and Postpartum Intake and Milk Production of Jersey Cows[J].J Dairy Sci.2000, 83: 123 - 127.
10P.H.Robinson.Effect of Yeast Culture on Adapation of Cows to Diets Postpartum[J]. J Dairy Sci. 1997, 80.. 1119 - 1125.