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4 早期断奶技术和育肥期饲粮NDF水平对湖羊营养表观消化率的影响

Table 4 Effects of early weaning and dietary NDF levels on the apparently nutrient digestibility of Hu lamb (%)

项目 Items 组别 Groups SEM P EW-LL EW-LH EW-HH ER-HH 55-65日龄 55-65 days of age 干物质 DM 77.23b 75.61b 80.28a 80.57a 0.62 0.004 有机物 OM 80.66b 79.32b 83.25a 83.50a 0.54 0.006 中性洗涤纤维 NDF 61.43 55.79 62.13 64.58 1.17 0.059 酸性洗涤纤维 ADF 49.55bc 42.02c 55.63ab 59.43a 2.17 0.001 总能 GE 74.24b 72.42b 78.09a 78.20a 0.71 0.001 氮 N 76.22a 70.45b 77.47a 79.86a 1.03 0.002 粗脂肪 EE 72.87ab 68.02b 76.03a 77.45a 1.26 0.045 115-125日龄 115-125 days of age 干物质 DM 70.73ab 71.80a 67.37bc 65.89c 0.82 0.017 有机物 OM 73.64a 74.22a 69.55b 69.09b 0.75 0.010 中性洗涤纤维 NDF 54.56 52.53 53.93 49.66 4.34 0.222 酸性洗涤纤维 ADF 49.94 47.67 46.43 44.82 1.08 0.478 总能 GE 69.81ab 70.75a 67.27b 67.48b 0.51 0.022 氮 N 72.73 74.21 71.14 70.37 0.63 0.135 粗脂肪 EE 89.71 91.07 88.59 89.25 0.60 0.553 170-180日龄 170-180 days of age 干物质 DM 76.19a 72.84b 73.79ab 71.45b 0.61 0.035 有机物 OM 79.73a 76.65b 77.70ab 75.89b 0.51 0.047 中性洗涤纤维 NDF 54.99 57.88 62.10 59.91 1.26 0.232 酸性洗涤纤维 ADF 52.87b 60.37a 60.93a 58.97a 1.09 0.035 总能 GE 71.23 71.57 73.12 71.79 0.69 0.807 氮 N 78.65a 73.53b 74.24b 73.29b 0.70 0.019 粗脂肪 EE 71.71 85.97 87.43 90.34 2.89 0.072