早期断奶和育肥期饲粮NDF水平对湖羊生长性能和消化代谢的影响

黄文琴,吕小康,庄一民,崔凯,王世琴,刁其玉,张乃锋

The Effects of Early Weaning and NDF Levels of Finishing Diets on Growth Performance, Nutrient Digestion and Metabolism of Hu Lambs

HUANG WenQin,LÜ XiaoKang,ZHUANG YiMin,CUI Kai,WANG ShiQing,DIAO QiYu,ZHANG NaiFeng

表1 试验饲粮组成及营养水平（干物质基础,%）

Table 1 Composition and nutrient levels of the experimental diets（dry matter basis,%)

项目 Items 开食料 Starter 育肥前期Early fattening 育肥后期Late fattening 低NDF Low NDF 高NDF High NDF 低NDF Low NDF 高NDF High NDF 原料Ingredients 葵花壳 Sunflower seed hull - 10 16 10 10 大豆皮 Soybean hull - 20 25 11 20 棕榈仁粕 Palm kernel meal - 0 5 0 5 苜蓿Alfalfa hay - 5 0 7.5 0 玉米Corn 50 35 25 45 35 豆粕Soybean meal 23.5 - - - - 麸皮Wheat bran 10 0 5 5 5 膨化大豆 Extruded soybean - 8 8 6 5 玉米干酒糟 DDGS - 4.5 8 6 8 玉米胚芽粕 Corn germ meal 11.8 10 0 0 5 脂肪粉 Fat power - 1.5 2 1.5 0.8 糖蜜 Molasses - 2 2 2 2 小苏打NaHCO3 0.5 - - - - 食盐 Salt 0.5 0.5 0.5 0.5 0.5 石粉Limestone 2.0 0.5 0.5 0.5 0.7 磷酸氢钙 Dicalcium phosphate 0.5 1 1 1 1 膨润土 Bentonite 0.2 1 1 1 1 预混料Premix1) 1.0 1 1 1 1 合计Total 100 100 100 100 100 营养水平 Nutrient levels 代谢能2) ME(MJ·kg-1) 12.24 12.05 11.93 12.25 12.00 干物质 DM 90.66 91.70 91.68 89.48 90.18 粗蛋白质 CP 15.27 13.75 12.76 13.00 12.86 粗脂肪 EE 8.31 5.64 6.28 6.02 5.94 粗灰分 Ash 2.76 7.09 6.55 7.34 7.13 中性洗涤纤维 NDF 12.30 33.00 37.50 28.18 33.42 酸性洗涤纤维 ADF 4.01 18.13 21.37 13.99 19.98 钙 Ca 1.06 1.03 1.18 1.23 1.03 总磷 P 0.59 0.56 0.51 0.46 0.52