5Mir Z, Macleod G K, Buchanan-Smith J G. Methods for protecting soybean and canola protein from degradation in the rumen[J]. Canada Journal of Animal Science,1984, 64(4) :853--865.
6Mir Z, Macleod G K,Grovum W L. Effect of feeding soybean meal protected with sodium hydroxide, fresh blood or fish hydrolysate to growing calves and lactating dairy cows[J]. Journal of Animal Science,1984,64(4) :845--852.
7Waltz D M,Stern M D. Evaluation of various methoda for protecting soybean protein from degradation by rumen bacteria [J]. Animal Feed Science and Technology, 1989,25 (1-- 2) :111.