羔羊精饲料在瘤胃中有机物降解率预测模型的建立  

Establishment of the Prediction Model for the Degradation Rate of Organic Matter of Lamb Concentrate in Rumen

作　　者：郭天龙[1] 金海[1] 薛树媛[1] 李长青[1] 田丰[1] 王利[1] 张海鹰[1] 李占斌[1] 

机构地区：[1]内蒙古农牧业科学院,内蒙古呼和浩特010010

出　　处：《安徽农业科学》2015年第36期75-77,共3页Journal of Anhui Agricultural Sciences

基　　金：国家科技支撑计划项目(2012BAD13B02);农业部国家肉羊产业技术体系项目(NYCYTX-39)

摘　　要：[目的]测定不同饲料在瘤胃中有机物降解率,并建立其预测模型。[方法]通过尼龙袋法测定不同饲料厂生产的羔羊早期育肥精饲料的瘤胃有机物降解率,分析瘤胃有机物降解率与其饲料化学成分的相关性,并提出通过饲料营养成分预测有机物动态降解率的预测模型。[结果]各饲料在瘤胃有机物动态降解率的高低顺序为C1羔羊料>E1羔羊料>F1羔羊料>I1羔羊料>A1羔羊料>D1羔羊料>H1羔羊料>G1羔羊料。瘤胃有机物动态降解率与羔羊料的常规营养成分的回归方程为ED=145.387-0.606DM-2.364CP-4.041EE-1.857NDF+2.271ADF+7.573ASH(r=0.926)。预测ED与实测ED的相关系数为0.88。[结论]该研究可为快速评定精饲料的瘤胃有效动态降解率提供了预测模型。[Objective] To determine the degradation rate of organic matter in the rumen and establish its prediction model.[Method]The organic matter degradation rate of lamb concentrate in early fattening stage produced from different feed factories was determined by using nylon bag technique. The correlations between the degradation rate of organic matter in the rumen and the chemical components of feed were analyzed. And the prediction model for predicting the dynamic degradation rate of organic matter of lamb concentrate by the chemical components was put forward.[Result]The order of the dynamic degradation rate of organic matter of different kinds of feed was C1 lamb feed 〉E1 lamb feed〉 F1 lamb feed〉 I1 lamb feed 〉A1 lamb feed 〉D1 lamb feed〉 H1 lamb feed 〉G1 lamb feed. The regression equitation between the dynamic degradation rate（ ED） of organic matter in the rumen and routine nutritional components of lamb feed was ED = 145. 387- 0. 606DM- 2. 364CP- 4. 041EE-1. 857 NDF ＋ 2. 271 ADF ＋ 7. 573ASH（ r = 0. 926）. The correlation coefficient between predicted ED and measured ED was 0. 88. [Conclusion]The research can provide prediction model for rapid assessment of effective dynamic degradation rate of concentrate in rumen.

关 键 词：瘤胃 尼龙袋法 有机物降解率 精饲料 

分 类 号：S821.61[农业科学—畜牧学]