日粮添加产朊假丝酵母与枯草芽孢杆菌对湖羊生长性能及养分消化率的影响

发布时间：2018-05-07 17:42

本文选题：产朊假丝酵母 + 枯草芽孢杆菌　；参考：《中国畜牧杂志》2017年02期

【摘要】：本试验旨在比较研究产朊假丝酵母(C.utilis)与枯草芽孢杆菌(B.subtilis)对湖羊生长性能及养分消化率的影响。试验选取3.5月龄、体重相近的雄性湖羊72只,随机分为3组,每组6个栏圈重复,每个重复4只羊。对照组饲喂精粗比为3∶7的全混合基础日粮,C.utilis组(CU)与B.subtilis组(BS)分别在基础日粮精料添加7.2 kg/t的菌剂,饲养期为40 d。结果表明:不同处理组湖羊终末体重、平均日增重差异不显著(P0.05),CU组、BS组羊只干物质采食量较对照组分别极显著下降了5.6%与14.0%(P0.001),CU组、BS组羊只耗料增重比(F/G)较对照组分别极显著下降了4.8%、22.5%(P0.001);不同处理组之间日粮脂肪、中性洗涤纤维、酸性洗涤纤维消化率均差异不显著(P0.05),但与对照组、CU组相比,BS组极显著提高了日粮蛋白质的消化率(P0.001)。结果提示,C.utilis与B.subtilis均能够提高湖羊饲料转化效率,并可提高日粮蛋白质消化率,且B.subtilis的促进作用明显大于C.utilis。
[Abstract]:The purpose of this experiment was to compare the effects of C. utilisi and B. subtilisi on the growth performance and nutrient digestibility of Hu sheep. 72 male Hu sheep (3.5 months old and of similar body weight) were randomly divided into 3 groups. The control group was fed with the whole mixed basal diet (C. Utilis) and the B.subtilis group, which were fed with 2. 2 kg/t fungicides in the basal diet concentrate, and the feeding period was 40 days. The results showed that the end weight of Hu sheep in different treatment groups, The average daily gain (ADG) was not significantly different from that of the control group (P 0.05CU), the dry matter intake of the BS group was significantly decreased by 5.6% and 14.0%, respectively, compared with the control group, the feed gain ratio of the sheep in the CU group was significantly lower than that in the control group (4.822.5P0.001), the fat content in the diet between the different treatments was significantly lower than that in the control group, the average daily gain was significantly lower than that in the control group (P < 0.05), and that in the control group was significantly lower than that in the control group (P < 0.05). There was no significant difference in digestibility of neutral detergent fiber and acid detergent fiber, but the digestibility of protein in BS group was significantly higher than that in CU group. The results showed that both C. utilis and B.subtilis could improve feed conversion efficiency and dietary protein digestibility of Hu sheep, and the promoting effect of B.subtilis was obviously greater than that of C. utiliss.
【作者单位】：中国农业大学动物科技学院动物营养学国家重点实验室;全国畜牧总站;山东省畜牧总站;
【基金】：资助项目:重点牧区“生产生态生活”保障技术集成与示范(2012BAD13B00)
【分类号】：S826.5

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