酵母β-葡聚糖对早期断奶羔羊生产性能和采食行为的影响  

Effects of yeast β-glucan on production performance and eating behavior of early-weaned lambs

作　　者：魏占虎[1] 李冲[1] 李发弟[1] 马友记[1] 王维民[1] 姜仲文 周勇[1] 

机构地区：[1]甘肃农业大学动物科学技术学院,甘肃兰州730070 [2]甘肃省永昌肉用种羊场,甘肃永昌737200

出　　处：《草业学报》2013年第4期212-219,共8页Acta Prataculturae Sinica

基　　金：现代农业产业技术体系建设专项资金(CARS-39);兰州鑫祥生物工程有限公司科技创新基金(XXSW-CX2010-01)资助

摘　　要：选用体重和出生日期相近的甘肃肉用绵羊新品种选育群初生羔羊50只(其中公羔30只、母羊20只),按同质原则分为5组(每组公羔6只、母羔4只),在15～91日龄分别饲喂酵母β-葡聚糖添加量为0.00,37.50,75.00,112.50和150.00mg/kg的饲粮,研究饲粮中添加酵母β-葡聚糖对28日龄早期断奶羔羊生产性能和采食行为的影响。结果表明,37.50,75.00和112.50mg/kg的添加量均显著提高了试验全期羔羊的末重和平均日增重(P<0.05);150mg/kg的添加量提高了15～28日龄羔羊的平均日增重(P=0.088);112.50mg/kg的添加量提高了29～42日龄和43～56日龄羔羊的末重和平均日增重(P<0.01),降低了43～56日龄羔羊的料肉比(P<0.01);37.50和75.00mg/kg的添加量提高了57～70日龄和71～91日龄羔羊平均日增重(P<0.01),降低了料肉比(P<0.01)。112.50mg/kg的添加量增加了55～56日龄羔羊的反刍次数(P<0.05)和90～91日龄羔羊的反刍时间(P<0.01)。75.00mg/kg添加量增加了55～56日龄和90～91日龄羔羊的反刍时间(P<0.01),增加了55～56日龄羔羊的反刍次数(P<0.05)。37.50,75.00,112.50和150.00mg/kg的添加量分别增加纯收入81.33,94.71,85.10和24.17元/只。综合各项指标,以75.00mg/kg的添加量较为适宜。The effects of yeast β-glucan on production performance and eating behavior of lambs weaned at 28 days of age were investigated. A single factor experimental design was used and fifty lambs （Gansu meat sheep new breeding population, male ： female ratio= 6 ： 4 for better homogeneity） were randomly allotted to 5 groups with 10 replicate lambs in each group. Lambs in group A were fed basal diets, while those in groups B to E were fed basal diets supplemented weights （P〈0.05） and average daily g with 37.50, ain （ADG） （ mg/kg yeast β-glucan were significantly higher than 75.00, 112.50 or 150.00 mg/kg yeast β-glucan. The final （P〈0.05） of lambs fed diets with 37.50, 75.00 and 112.50 those of group A after-91 days. The ADG of lambs fed a diet with 150.00 mg/kg yeast t3 glucan was higher than in the control group after 15-28 days （P=0. 088）. The final weights （P〈0.05） and ADG （P〈0.01） of lambs fed a diet with 112.50 mg/kg yeast β-glucan were significantly higher than those of group A after 29-42 days and after 43-56 days respectively. The ratio of feed to gain （F/G） of lambs fed a diet with 112.50 mg/kg yeast β-glucan was significantly lower than that of group A at 43-56 days （P〈0.01）. The final weight （P〈0.01） and ADG （P〈0.01） of lambs fed diets with 37.50 and 75.00 mg/kg yeast β-glucan after 57-70 days and 71-91 days, were significantly higher than those of group A although the F/G ratio was significantly （P〈0.01） lower. The ruminating times of lambs treated with 112.50 mg/kg yeast β-glucan was higher than those of group A after 55-56 days and after 90-91 days （P〈0.05, P〈0.01）. The ruminating time of lambs treated with 75.00 mg/kg yeast β-glucan was significantly （P〈0.01） higher than those of group A after 55-56 days and after 90-91 days. Compared with group A, groups B to E had benefited more, with 81.33, 94.71, 85. 10 and 24.17 Yuan/lamb respectively. The optimum diet for early-weaned lambs was a supplement of 75.00 mg/kg y

关 键 词：早期断奶羔羊 酵母Β-葡聚糖 生产性能 采食行为 

分 类 号：S826.4[农业科学—畜牧学]