3Calberry J M, Plaizier J C, Einarson M S, et al. Effects of replacing chopped alfalfa hay with alfalfa silage in a total mixed ration on production and tureen conditions of lactating dairy cows[J]. Journal of Dairy Science,2003,86(11) :3611.
4Bhandari SK,Li S, Ominski KH, et al . Effects of the chop lengths of alfalfa silage and oat silage on feed intake, milk production, feeding behavior, and rumen fermentation of dairy cows[J]. J Dairy Sci, 2008, 91 (5) :1942-58.
5Vargas Bello-Perez E, Mustafa AF, Seguin P. Effects of feeding forage soybean silage on milk production, nutrient digestion, and ruminal fermentation of lactating dairy cows[J].J Dairy Sci,2008, 91 (1):229-35.
6Plaizier J C. Replacing chopped alfalfa hay with alfalfa silage in barley grain and alfalfa based total mixed rations for lactating dairy cows[J]. J Dairy Sei,2004, 87 (8):2495- 2505.
7Kammes K L,Heemink G B, Albrecht K A, et al . Uti- lization of kura clover-reed canarygrass silage versus alfalfa silage by lactating dairy cows[J]. J Dairy Sci, 2008 Aug;91(8) :3138 -44.
8Bulang M, Kluth H, Engelhard T, et al. Studies on the use of lucerne silage source for high-milk-producing dairy cows[J]. J Anita Physiol Anita-Nutr (Berl),2006, 90 (3-4):89 -102.
9Groff E B, Wu Z. Milk production and nitrogen excretion of dairy cows fed different amounts of protein and varying proportions of alfalfa and corn silage[J]. J Dairy Sci,2005, 88 (10) :3619-32.
