肉牛饲喂不同处理玉米秸秆日粮营养物质消化和生产效益的差异比较  

Nutrient Digestibility and Productive Performance of Beef Fed Diet with Treated Cornstalks and Concentrate

作　　者：肖蕊[1,2] 赵祥[3] 岳勇伟[1] 张微[1] 莫放[1] 

机构地区：[1]中国农业大学动物营养学国家重点实验室,北京100194 [2]长治市职业技术学院园艺系,山西长治046000 [3]山西农业大学动物科技学院,山西太谷030801

出　　处：《中国农学通报》2009年第3期8-12,共5页Chinese Agricultural Science Bulletin

基　　金："十一五"国家科技支撑计划"秸秆饲料转化与利用技术研究"(2006BAD12B04-02A);农业公益性行业科研专项"西部高档肉牛产业化配套技术及产业化机制研究"(nyhyzx07-035)

摘　　要：为了比较玉米秸秆不同处理方法对肉牛日粮营养物质表观消化和生产经济效益的影响,选用杂交肉牛16头,随机分为4个处理组（干玉米秸秆组、干秸秆青贮组、微生物处理组、氨化处理组）进行饲养试验和消化代谢试验。结果表明,肉牛饲喂不同处理秸秆日粮的营养物质表观消化率没有明显的差异（P〈0.05）,有机物表观消化率为53.3%～61.8%,秸秆处理可明显提高可消化有机物的进食量（DOM）和肉牛养殖经济效益,相对于其它处理组,秸秆氨化组的经济效益较高。Sixteen crossbred feedlot beef were selected to investigate the nutrient digestible and economical efficiency effects of three differently processed corn stalk and dry corn stalk. The animal randomly divided in to four groups including dry stalks silage, microbial fermented, ammonianized stalks and dry stalks （control group ）, The digestible experiment result showed that there was from 53 to 62 percent of digestibility of organ matter with different treated diet, the voluntary intake of digestible organ matter was higher（P〈0.05） in animals consuming treatment stalk. The nutrient digestibility of total tract were no significant （P〉0.05） difference among the processed corn stalk and dry corn stalk. The growth trials beefs fed treated corn stalk diets gained faster and tended to be more efficient than those fed the dry corn stalk diets. However, the fattening result of ammonianized stalks improved beef performance and had a good economic return.

关 键 词：肉牛 秸秆处理 消化 经济效益 

分 类 号：S815.5[农业科学—畜牧学]