6Phillips C J C,Rind M I.The effects of frequency of feeding a total mixed ration on the production and behavior of dairy cows[J].Journal of Dairy Science,2001,84(9):1979-1987.
7Bar-Peled U,Robinzon B,Maltz E,et al.Increased weight gain and effects on production parameters of Holstein heifer calves that were allowed to suckle from birth to six weeks of age[J].Journal of Dairy Science,1997,80(10):2523-2528.
8Anderson K L,Nagaraja T G,Morrill J L,et al.Ruminal microbial development in conventionally or early-weaned calves[J].Journal of Animal Science,1987,64(4):1215-1226.
9Tamate H,Mc Gilliard A D,Jacobson N L,et al.Effect of various dietaries on the anatomical development of the stomach in the calf[J].Journal of Dairy Science,1962,45(3):408-420.
10Lane M A,Jesse B W.Effect of volatile fatty acid infusion on development of the rumen epithelium in neonatal sheep[J].Journal of Dairy Science,1997,80(4):740-746.
