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草业学报 ›› 2013, Vol. 22 ›› Issue (4): 212-219.DOI: 10.11686/cyxb20130426

• 研究论文 • 上一篇    下一篇

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

魏占虎1,李冲1,李发弟1*,马友记1,王维民1,姜仲文2,周勇1   

  1. 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
  • 出版日期:2013-08-20 发布日期:2013-08-20
  • 通讯作者: E-mail:lifd@gsau.edu.cn
  • 作者简介:魏占虎(1984-),男,甘肃金塔人,在读硕士。E-mail:wzh123.com@163.com
  • 基金资助:
    现代农业产业技术体系建设专项资金(CARS-39)和兰州鑫祥生物工程有限公司科技创新基金(XXSW-CX2010-01)资助。

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

Effects of yeast β-glucan on production performance and eating behavior of early-weaned lambs
WEI Zhan-hu1, LI Chong1, LI Fa-di1, MA You-ji1, WANG Wei-min1,
JIANG Zhong-wen2, ZHOU Yong1   

  1. 1.College of Animal Science and Technology, Gansu Agriculture University, Lanzhou 730070, China;
    2.Gansu Yongchang Meat Sheep Breeding Farm, Yongchang 737200, China
  • Online:2013-08-20 Published:2013-08-20

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150.00 mg/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112.50 mg/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);150 mg/kg的添加量提高了15~28日龄羔羊的平均日增重(P=0.088);112.50 mg/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75.00 mg/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)。112.50 mg/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)。75.00 mg/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150.00 mg/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75.00 mg/kg的添加量较为适宜。

Abstract: 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 with 37.50, 75.00, 112.50 or 150.00 mg/kg yeast β-glucan. The final weights (P<0.05) and average daily gain (ADG) (P<0.05) of lambs fed diets with 37.50, 75.00 and 112.50 mg/kg yeast β-glucan were significantly higher than those of group A after-91 days. The ADG of lambs fed a diet with 150.00 mg/kg yeast β-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 yeast β-glucan.

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