饲粮中全株玉米青贮比例对杜湖杂交母羔生长性能、瘤胃发酵、养分消化率及血清学指标的影响

王金飞,杨国义,樊子菡,刘旗,张鹏程,任有蛇,杨春合,张春香

Effects of Whole Plant Corn Silage Ratio in Diet on Growth Performance, Rumen Fermentation, Nutrient Digestibility and Serological Parameters of Dorper×Hu Crossbred Female Lambs

WANG JinFei,YANG GuoYi,FAN ZiHan,LIU Qi,ZHANG PengCheng,REN YouShe,YANG ChunHe,ZHANG ChunXiang

表4 饲粮中全株玉米青贮比例对杜湖杂交母羔营养物质表观消化率的影响

Table 4 Effects of whole-plant corn silage ratio in diet on apparent digestibility of dietary nutrients of Doper×Hu crossbred female lambs

项目 Item 组别 Groups P值 P value Ⅰ Ⅱ Ⅲ Ⅳ 干物质 DM (%) 59.40±2.50b 66.00±4.08ab 67.67±3.45a 67.33±2.85a 0.0482 有机物 OM (%) 65.83±3.18b 71.83±3.27a 73.33±3.10a 73.50±3.45a 0.0238 中性洗涤纤维 NDF (%) 51.83±3.67 56.17±4.72 52.33±4.63 50.83±4.18 0.5641 总能 GE (%) 64.17±2.26b 70.33±3.86ab 71.67±2.23a 72.50±3.19a 0.0446 摄入氮 Nitrogen intake (g·d-1) 30.48±3.13 30.36±3.15 29.56±3.67 28.09±2.48 0.5417 粪氮 Fecal nitrogen (g·d-1) 11.08±1.98a 8.69±1.26b 7.93±0.93b 7.59±1.15b 0.0014 尿氮 Urinary nitrogen (g·d-1) 6.46±1.76ab 6.21±1.64ab 5.28±1.10b 8.28±1.06a 0.0456 总排泄氮 Total nitrogen excretion (g·d-1) 17.54±3.02 14.90±2.12 13.21±2.50 15.87±2.96 0.1189 可消化氮 Digestible nitrogen (g·d-1) 19.41±3.23 21.67±3.65 21.63±2.98 20.50±3.20 0.5922 氮表观消化率 Apparent digestibility of nitrogen (%) 63.17±3.68b 71.17±3.18a 73.00±2.19a 72.67±2.54a 0.0156 氮沉积率 Nitrogen retention rate (%) 41.87±4.08b 50.38±3.04ab 54.97±2.65a 43.40±2.98b 0.0441