牦牛瘤胃内饲料蛋白质降解率的研究  

PROTEIN DEGRADATION OF FEEDSTUFFSIN THE RUMEN OF YAKS

作　　者：薛白[1] 韩兴泰[1] 

机构地区：[1]青海省畜牧兽医科学院

出　　处：《动物营养学报》1998年第3期35-39,共5页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：中国科学院海北定位站基金

摘　　要：用瘤胃尼龙袋技术测定了１１种常见饲料在牦牛瘤胃内的降解率。根据饲养水平，瘤胃食糜的外流速度估计为０．０６７／ｈ。测定结果表明，玉米、豌豆秸粉、菜籽饼、豌豆、鱼粉、曲拉、肉骨粉、青稞、甲醛鱼粉、甲醛菜籽饼和麸皮的粗蛋白（ＣＰ）降解率分别为０．６８、０．５６、０．４４、０．８５、０．４９、０．５５、０．８１、０，８３、０．３８、０，４８和０．７９，干物质（ＤＭ）降解率依次为０．６８、０．３０、０．４９、０．７３、０．５０、０，５４、０，５９、０．８２、０．３２、０．４９和０．７４。Degradabilities of 11 feedstuffs were determined with 2 yaks fitted rumen cannula , using in situ incubation in nylon bag method based on passage rate of k= 0. 067 / h . Crude protein degradation of corn , garden pea straw , rapeseed meal , garden pea , fish meal, skimed dry acidification milk, meat and bone meal, naked barley., firmaldehyde fish meal, firmaldehyde rapeseed meal and wheat bran were 0. 68, 0. 56, 0. 44, 0. 85, 0. 49, 0. 55, 0. 81, 0. 83, 0, 38, 0. 48 and 0. 79, respectively. Corresponding dry matter degradation were 0. 68, 0. 30, 0. 49, 0. 73, 0.50,0.54,0.59,0.82,0.32,0.49 and 0.74.

关 键 词：牦牛 瘤胃 蛋白质 降解率 饲料 

分 类 号：S823.85[农业科学—畜牧学]