中国畜牧杂志2017，Vol.53Issue(4)：76-82,7.DOI:10.19556/j.0258-7033.2017-04-076
基于杜泊×小尾寒羊杂交肉羊能量代谢试验与套算法评定燕麦、大麦、小麦、高粱、玉米的代谢能
Metabolizable Energy Determination of Oat, Barley, Wheat, Sorghum and Corn Grains Based on Energy Metabolism Trial and Substitution Method in Dorper ×Thin-Tailed Han Crossbred Lambs
摘要
Abstract
The experiment was conducted to evaluate the metabolizable energy (ME) of oat,barley,wheat,sorghum and corn grain based on apparent nutrient digestibility trial and substitution method using Dorper × thin-tailed Han crossbred castrated lambs,and develop the prediction equation of ME of energy feed by using proximate analysis of nutrients and digestible nutrients.Thirty-six castrated Dorper × thin-tailed Han crossbred rams (52.6±1.4 kg of bodyweight) were randomly assigned to 6 groups.Digestibility,respirometry trials were conducted and substitution method were used to measure and calculate the digestible energy (DE) and ME of individual feed.Correlation analysis was conducted between nutrients or digestible nutrients and ME.Nutrient values or digestible nutrient values were used to predict ME of energy feed.The results showed as follows:the prediction equation of dietary ME using values of proximate analysis was ME =19.91+45.763×CP-1.013×GE+3.247×ADF (R2=0.726,n=30,P＜0.01).The prediction equation of dietary ME using digestible nutrients was ME =-3.113 + 15.954×DOM + 5.912×DDM + 2.281×DCP (R2=0.764,n=30,P＜0.01).In conclusion,there is significant correlation between nutrients,digestible nutrients and feed ME.The accuracy of equation could be improved by adding more predicting factors.关键词
肉羊/能量饲料/代谢能/可消化养分/预测模型Key words
Mutton sheep/Energy feed/Metabolizable energy/Digestible nutrient/Prediction equation分类
农业科技引用本文复制引用
万凡,赵江波,马涛,臧长江,马晨,杨开伦,刁其王..基于杜泊×小尾寒羊杂交肉羊能量代谢试验与套算法评定燕麦、大麦、小麦、高粱、玉米的代谢能[J].中国畜牧杂志,2017,53(4):76-82,7.基金项目
国家肉羊产业技术体系(CARS-39) （CARS-39）
国家“十二五”支撑计划(2011BAZ01734) （2011BAZ01734）
