肉用绵羊生长期甲烷排放特点与预测模型的建立

周艳,董利锋,邓凯东,许贵善,刁其玉

Development of Models of Methane Emissions from Growing Sheep

ZHOU Yan,DONG LiFeng,DENG KaiDong,XU GuiShan,DIAO QiYu

表4 甲烷产量与采食量、可消化营养物质摄入量及营养物质表观消化率的相关性（r）

Table 4 Correlation coefficient between the methane and nutrients intake, digestive nutrients intake, apparent digestibility of nutrients

项目Items DMI CPI NDFI DDM DCP DNDF DMD CPD NDFD 25-35 kg CH4 0.703** 0.171 0.796** 0.215 -0.515 0.641* -0.547 -0.563* -0.049 CH4/BW0.75 0.678* 0.141 0.778** 0.183 -0.521 0.616* -0.546 -0.556* -0.037 48-55 kg CH4 0.518 0.117 0.672** 0.220 -0.356 0.443 -0.560* -0.585* -0.249 CH4/BW0.75 0.520 0.118 0.674* 0.220 -0.352 0.443 -0.562* -0.578* -0.240 25-55 kg CH4 0.603** 0.219 0.708** 0.280 -0.401* 0.547** -0.549** -0.592** -0.144 CH4/BW0.75 0.714** 0.371 0.795** 0.392* -0.334 0.603** -0.556** -0.619** -0.172