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
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张继伟,高昆,张英杰,刘月琴,段春辉
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Effects of Diets with Energy-to-Nitrogen Rations on Growth Performance and Nutrients Apparent Digestibility in Growing Yanshan Cashmere Goat
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ZHANG JiWei,GAO Kun,ZHANG YingJie,LIU YueQin,DUAN ChunHui
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Table 2 Composition and nutrient levels of experimental diets (dry matter basis)
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| 项目Items | Ⅰ | Ⅱ | Ⅲ | Ⅳ | Ⅴ | Ⅵ | Ⅶ | Ⅷ | Ⅸ | | 原料Ingredients | | 玉米秸秆Corn straw | 48.0 | 48.0 | 48.0 | 30.0 | 30.0 | 30.0 | 16.0 | 16.0 | 16.0 | | 苜蓿Alfalfa hay | 10.0 | 10.0 | 10.0 | 15.0 | 15.0 | 15.0 | 16.0 | 16.0 | 16.0 | | 玉米Corn | 24.0 | 21.0 | 18.0 | 40.0 | 37.0 | 34.0 | 55.0 | 52.0 | 49.0 | | 豆粕Soybean meal | 9.0 | 12.0 | 15.0 | 6.5 | 9.0 | 12.0 | 4.0 | 7.0 | 10.0 | | 麸皮Wheat bran | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | | 石粉limestone | 0.1 | 0.1 | 0.1 | 0.1 | | 0.1 | 0.2 | 0.2 | 0.2 | | 磷酸氢钙CaHPO4 | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.1 | | | | | 预混料Premix2) | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | | 食盐NaCl | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | | 合计Total | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | | 营养水平Nutrient levels | | 代谢能ME (MJ ?kg-1) | 9.10 | 9.10 | 9.09 | 9.90 | 9.90 | 9.89 | 10.98 | 10.97 | 10.97 | | 粗蛋白 CP(%) | 12.64 | 13.74 | 14.86 | 11.91 | 12.94 | 14.18 | 11.38 | 12.53 | 13.78 | | 可消化粗蛋白DCP(%) | 8.53 | 9.55 | 10.57 | 8.48 | 9.50 | 10.52 | 8.48 | 9.50 | 10.48 | | 可代谢蛋白 MP(%) | 6.44 | 7.62 | 8.85 | 5.46 | 6.56 | 7.89 | 4.62 | 5.86 | 7.46 | | 中性洗涤纤维NDF(%) | 41.70 | 42.20 | 42.75 | 35.53 | 35.33 | 35.60 | 26.27 | 26.52 | 26.87 | | 酸性洗涤纤维ADF(%) | 21.95 | 21.41 | 21.62 | 18.37 | 18.29 | 18.29 | 13.23 | 13.50 | 13.10 | | 钙Ca(%) | 0.48 | 0.48 | 0.49 | 0.48 | 0.47 | 0.50 | 0.47 | 0.48 | 0.49 | | 磷P(%) | 0.26 | 0.28 | 0.29 | 0.27 | 0.30 | 0.29 | 0.25 | 0.27 | 0.28 |
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