赵国宏;王世国;王芬;王宏;刁其玉;王世琴;张乃锋;

• 1:中国农业科学院饲料研究所农业农村部饲料生物技术重点实验室
• 2:江苏省东辛农场有限公司
• 3:北京英惠尔生物技术有限公司

摘要(Abstract)：

本试验旨在研究饲粮添加不同水平酵母培养物对育肥湖羊生长性能、屠宰性能、内脏器官发育及肉品质的影响。选取3～4月龄平均体重38 kg的育肥湖羊公羊120只,随机分为4组,每组5个重复,每重复6只羊。试验分为育肥前期(1～60 d)和育肥后期(61～90 d)2个阶段,育肥前期和育肥后期基础饲粮精粗比分别为60∶40和75∶25。育肥全期(1～90 d)对照组均饲喂基础饲粮;育肥前期,试验组在基础饲粮中分别添加5(A组)、10(B组)、20 g/d(C组)的YC;育肥后期,试验组在基础饲粮中分别添加10(A组)、20(B组)、40 g/d(C组)的YC。预试期7 d,正试期90 d。结果表明:1)在育肥前期,各组之间平均日增重无显著影响(P>0.05);但在育肥后期和育肥全期,A组平均日增重显著高于对照组(P<0.05),料重比显著低于对照组(P<0.05)。2)各组之间宰前活重、胴体重、屠宰率、眼肌面积和GR值差异均不显著(P>0.05)。3)A组肾脏重量显著高于对照组(P<0.05),各组之间心脏、肝脏、肺脏、脾脏重量及其占宰前活重比例差异均不显著(P>0.05)。4)各组之间瘤胃、网胃、瓣胃、皱胃重量及其占宰前活重比例差异均不显著(P>0.05)。5)各组之间肌肉pH、滴水损失率、肉色差异均不显著(P>0.05)。由此可见,本试验条件下,饲粮中添加YC对育肥湖羊屠宰性能及肉品质无改善作用,饲粮中添加10 g/d的YC提高了湖羊育肥后期的生长性能。

关键词(KeyWords)： 育肥羊;酵母培养物;高精料饲粮;生长性能;屠宰性能;肉品质

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划课题（2017YFD0502001）;; 国家肉羊产业技术体系（CARS-38）;; 北京英惠尔生物技术有限公司横向课题（RS201805)

作者(Author): 赵国宏;王世国;王芬;王宏;刁其玉;王世琴;张乃锋;

Email:

DOI:

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