酵母培养物对内蒙古白绒山羊瘤胃发酵的影响  

Effect of Yeast Culture on Rumen Fermentation in Inner Mongolia White Cashmere Goats

作　　者：张爱忠[1] 卢德勋[2] 高民[2] 孙海洲[2] 王立志[1] 

机构地区：[1]黑龙江八一农垦大学 [2]内蒙古农牧业科学院,内蒙古呼和浩特010030

出　　处：《中国畜牧杂志》2006年第17期36-39,共4页Chinese Journal of Animal Science

基　　金：国家自然科学基金(30460095)

摘　　要：选择12只年龄相同的安装永久性瘤胃瘘管的内蒙古白绒山羊半同胞羯羊,按体重配对原则分为4组,其中A1、A3处理组饲喂精粗比为3∶7的基础日粮,B1、B2处理组饲喂精粗比为2∶8的基础日粮。采用自身对照试验方法,对照期饲喂基础日粮,试验期在基础日粮中分别添加不同水平的酵母培养物(YC)。各处理YC添加量A1为2.0%;A3为3.0%;B1为2.0%;B2为2.5%。结果表明:添加YC极显著(P<0.01)降低A3和B1处理瘤胃NH3-N浓度,极显著(P<0.01)提高A1处理的瘤胃NH3-N浓度。添加YC能显著(P<0.05)提高绒山羊瘤胃乙酸、丙酸和丁酸的浓度,总VFA浓度得到极显著(P<0.01)提高;对乙酸/丙酸比没有显著影响。显著提高B1和B2处理菌体蛋白含量。Twelve mature half-sib Inner Mongolia White Cashmere wether goats with permanent ruminal cannulas were divided into four groups using self-contrast designs and fed on basal diets which had concentrate/roughage ratio of 3：7（A1, A3） and 2：8（B1,B2） respectively in control trials. Yeast culture （YC） were supplemented with 2% in Al and Bl, 3.0% in A3, 2.5% in B2 respectively in YC supplement trials. The results showed that the rumen NH3-N concentrations of the animals in A3 and Bl treatments were decreased significantly （P 〈 0.01）, but it was increased in Al treatment （P 〈 0.01 ） with yeast culture supplementation. Rumen acetate, propionate, butyrate （P 〈 0.05） and total VFA concentrations were increased significantly （P 〈 0.01）, but the rumen acetate/propionate ratios were not affected. Rumen BCP concentrations tended to increase after supplementing YC.

关 键 词：畜牧学 酵母培养物 NH3-N浓度 挥发性脂肪酸 菌体蛋白 绒山羊 

分 类 号：S826.5[农业科学—畜牧学]