动物营养学报2016，Vol.28Issue(4)：1217-1224,8.DOI:10.3969/j.issn.1006-267x.2016.04.033
应用套算法估测肉羊精饲料代谢能
Establishment of Prediction Model of Metabolizable Energy of Concentrate for Mutton Sheep by Substitution Method
摘要
Abstract
This experiment was conducted to establish prediction model of metabolizable energy of concentrate for mutton sheep by substitution method. Sixty-six castrated Dorper × thin-tailed Han F1 rams [ ( 49. 6 ± 1.3) kg)] were randomly assigned into 11 groups (1 basal diet group and 10 experimental diet groups) with 6 rams per group. Digestion and metabolism trial ( 8 days) and respirometry trial ( 3 days) combined with sub-stitution method were conducted to measure digestible energy and metabolizable energy of 10 concentrates, and to establish the models between metabolizable energy and proximate nutrients or digestible nutrients. The results showed as follows, 1) gross energy (P<0.05), acid detergent fiber content (P<0.05), and organic matter content ( P<0.01) had significant correlations with digestible energy;the proximate nutrients had no correlation with ME ( P>0.05) . 2) Digestible nutrients had significant correlations with metabolizable energy ( P<0.01) , and the equations as follows: ME=-1. 907+1. 344DE+1. 321DDM-5. 347DOM-2. 093DADF ( R2=0. 845, n=60, P<0.01);ME=-2.105+1.349DE-6.577DOM ( R2=0.842, n=60, P<0.01) . [ ME was metaboliza-ble energy ( MJ/kg) , DE was digestible energy ( MJ/kg) , DDM was digestible dry matter (%) , DOM was digestible organic matter (%) , and DADF was digestible acid detergent fiber (%) . ] In conclusion, it is un-suitable to predict metabolizable energy using the proximate nutrients, while it is accurate to predict metaboliza-ble energy using digestible nutrients of concentrate.关键词
肉羊/精饲料/消化能/代谢能/可消化养分/预测模型Key words
mutton sheep/concentrate/digestible energy/metabolizable energy/digestible nutrients/predic-tion model分类
农业科技引用本文复制引用
赵江波,刁其玉,魏时来,马涛,肖怡,丁静美,李岚捷,冯文晓,贾鹏,赵明明..应用套算法估测肉羊精饲料代谢能[J].动物营养学报,2016,28(4):1217-1224,8.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“肉羊健康养殖模式构建与示范”(2011BAZ01734) （2011BAZ01734）
