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1 试验饲粮组成及营养水平(%,风干基础)
|
Table 1 Composition and nutrient levels of the experimental diets (%, air dry basis)
|
|
项目 Items | 非纤维性碳水化合物/中性洗涤纤维(NFC/NDF) | 0.78 | 1.03 | 2.17 | 原料Ingredients | | | | 羊草Chinese wildrye hay | 65.00 | 50.00 | 35.00 | 玉米Corn | 19.10 | 32.91 | 46.69 | 豆粕Soybean meal | 13.00 | 14.05 | 15.10 | 磷酸氢钙CaHPO4 | 0.60 | 0.55 | 0.53 | 石粉Limestone | 0.80 | 0.99 | 1.18 | 食盐NaCl | 0.50 | 0.50 | 0.50 | 预混料Premix1) | 1.00 | 1.00 | 1.00 | 合计Total | 100.00 | 100.00 | 100.00 | 营养水平Nutrient levels | | | | 干物质DM | 90.68 | 90.07 | 87.58 | 粗蛋白CP | 8.08 | 8.60 | 9.46 | 代谢能ME/(MJ·kg-1)2) | 8.03 | 8.02 | 8.04 | 粗脂肪EE | 2.28 | 2.68 | 2.74 | 中性洗涤纤维NDF | 45.59 | 39.65 | 36.59 | 钙Ca | 1.14 | 1.17 | 1.15 | 磷P | 0.33 | 0.39 | 0.41 | 非纤维性碳水化合物(NFC)3) | 35.72 | 40.66 | 79.33 | 精粗比 Forage: Concentrate | 35:65 | 50:50 | 65:35 |
|
|
|