酵母培养物对山羊瘤胃纤维素酶活及挥发性脂肪酸的影响  

Effect of Yeast Culture on Activities of Fiber Hydrolytic Enzymes and VFA in Goat Rumen

作　　者：唐海翠[1] 庞学东[1] 庄苏[1] 王恬[1] 

机构地区：[1]南京农业大学动物科技学院,江苏南京210095

出　　处：《中国畜牧杂志》2006年第15期34-38,共5页Chinese Journal of Animal Science

基　　金：农业部农业结构调整重大技术研究专项(2003-09-01B)

摘　　要：在高精料日粮条件下,以4头装有永久性瘤胃瘘管的本地山羊为试验动物,采用4×4拉丁方设计,研究酵母培养物(0、20、30、和40g/d)对山羊瘤胃纤维素酶活及挥发性脂肪酸(VFA)的影响。结果表明:日粮中添加酵母培养物有提高瘤胃中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)消失率及羧甲基纤维素酶活、木聚糖酶活的趋势,但差异均不显著(P>0.05)。日粮中添加酵母培养物能够提高瘤胃乙酸、丙酸、丁酸、TVFA浓度及乙酸丙酸比。与对照组相比,早饲后4h时,20g/d处理组乙酸浓度提高22%(P<0.05),TVFA浓度提高21%(P<0.05),30g/d处理组的丙酸浓度提高11%(P>0.05);18h时,30g/d处理组乙酸浓度和TVFA浓度较对照组分别提高32%(P<0.05)和28%(P<0.05)。Four goats with culture on activities of fiber a tendency to increase the d permanent rumen fistulae in 4×4 Latin square design were used to study the effect of yeast hydrolytic enzymes and VFA in goat rumen contents. The results showed that yeast culture had egradation of NDF and ADF and activities of CMCase and Xylanase in rumen （P 〉 0.05）. Basal diet supplemented with yeast culture could increase mmen acetate, propionate, butyrate, TVFA concentration and acetate to propionate ratio. At 4 h after morning feeding, the acetate and TVFA concentration in 20 g/d yeast culture group were increased significantly by 22% （P 〈 0.05） and 21% （P 〈 0.05）, respectively, compared with the control. However, the propionate concentration in 30 g/d yeast culture group was increased significantly by 11% （P 〈 0.05） in 30 g/d yeast culture group. At 18h, the acetate and TVFA concentration in 30g/d yeast culture group were increased significantly by 32%（P 〈 0.05） and 28%（P 〈 0.05） respectively than those of the control group.

关 键 词：畜牧学 酵母培养物 瘤胃 纤维素酶活 挥发性脂肪酸 山羊 

分 类 号：S827.5[农业科学—畜牧学]