日粮能氮比对燕山绒山羊生长性能及 营养物质表观消化率的影响

张继伟,高昆,张英杰,刘月琴,段春辉

Effects of Diets with Energy-to-Nitrogen Rations on Growth Performance and Nutrients Apparent Digestibility in Growing Yanshan Cashmere Goat

ZHANG JiWei,GAO Kun,ZHANG YingJie,LIU YueQin,DUAN ChunHui

表4 不同能氮比对25—35 kg燕山绒山羊能量消化率的影响

Table 4 Effects of different energy-to-nitrogen rations on energy digestibility of Yanshan cashmere goats from 25 kg to 35 kg BW

项目 Items 摄入总能 GEI (MJ/d) 粪能 FE (MJ/d) 尿能 UE (MJ/d) 消化能 DE (MJ/d) 总能消化率 DE/GE (%) 组别 Groups Ⅰ组 18.55±1.26 7.31±0.74a 0.47±0.23 11.24±1.04b 60.58±3.22c Ⅱ组 18.40±1.86 7.39±1.01a 0.49±0.05 11.01±0.96b 59.93±2.00c Ⅲ组 18.91±1.37 7.12±0.50ab 0.60±0.09 11.79±1.34ab 62.26±3.28c Ⅳ组 18.11±1.84 5.74±0.55cd 0.56±0.19 12.37±1.29ab 68.30±0.33b Ⅴ组 18.66±2.36 6.20±0.84bc 0.57±0.10 12.46±1.69ab 66.76±2.13b Ⅵ组 18.32±0.90 6.09±0.72bc 0.74±0.11 12.23±0.92ab 66.75±3.69b Ⅶ组 18.48±1.23 4.76±0.69de 0.72±0.24 13.72±0.65a 74.34±2.18a Ⅷ组 17.40±2.24 4.65±0.50e 0.57±0.20 12.76±1.82ab 73.22±1.76a Ⅸ组 17.26±1.70 4.49±0.73e 0.59±0.15 12.77±1.10ab 70.06±2.19a P值 P value 能量Energy 0.417 <0.001 0.212 0.008 <0.001 蛋白Protein 0.935 0.814 0.349 0.773 0.483 能量×蛋白 Energy × protein 0.826 0.895 0.440 0.751 0.766 主效应 Main effect 能量 Energy 低Low 18.62±1.39 7.27±0.71a 0.52±0.14 11.35±1.07b 60.92±2.81c 中Medium 18.36±1.65 6.01±0.68b 0.62±0.15 12.35±1.21ab 67.27±2.35b 高High 17.71±1.70 4.63±0.60c 0.63±0.19 13.08±1.25a 73.87±1.92a 蛋白 Protein 低Low 18.38±1.35 5.93±1.25 0.58±0.23 12.44±1.41 67.74±6.23 中Medium 18.15±2.04 6.08±1.38 0.54±0.13 12.08±1.60 66.64±5.94 高High 18.16±1.42 5.90±1.28 0.64±0.13 12.27±1.11 67.69±5.81