不同酵母培养物对绵羊瘤胃体外发酵参数的影响  

Effects of Different Yeast Cultures on Rumen Fermentation Parameters of Sheep in Vitro

作　　者：刘明波[1] 付晓然[1] 王文盼 张刚娟 辛亚平[4] LIU Mingbo;FU Xiaoran;WANG Wenpan;ZHANG Gangjuan;XIN Yaping(Leting County Comprehensive Vocational and Technical School of Hebei,Leting Hebei 063600,China;Xi'an Xinhanbao Biotechnology Co.,Ltd.;Yangling Ruiqi Biotechnology Co.,Ltd.;College of Animal Science and Technology,Northwest A&F University)

机构地区：[1]乐亭县综合职业技术学校,河北乐亭063600 [2]西安鑫汉宝生物科技有限公司 [3]杨凌瑞祺生物科技有限公司 [4]西北农林科技大学动物科技学院

出　　处：《畜牧兽医杂志》2023年第4期4-7,共4页Journal of Animal Science and Veterinary Medicine

基　　金：西安市农业技术研发项目(XA2020-NYJSYF-0005)资助。

摘　　要：为验证不同类型及比例的酵母培养物(YC)对绵羊瘤胃体外发酵参数的影响。采用全因子试验设计,在发酵底物条件下分别添加不同类型及比例的YC,一个对照组、4个试验组,测定体外发酵参数浓度;发现YC-3能极显著降低培养液pH和丙酸浓度,显著增加异丁酸浓度和乙丙比。在体外条件下添加1%、2%YC均能显著增加培养液中乙酸浓度,添加4%YC能极显著降低异戊酸的浓度。YC不同来源和不同水平影响绵羊瘤胃体外发酵pH、丙酸及乙丙比等发酵参数,用于指导畜牧生产实际。This study was to verify the effects of different types and proportions of yeast culture(YC)on the rumen fermentation parameters of sheep in vitro.This experiment adopts a full factorial design,and different types and proportions of YC are added under the condition of fermentation substrate.The experiment was divided into a control group and 4 test groups and the concentrations of in vitro fermentation parameters were determined.It was found that YC-3 can significantly reduce the pH and propionic acid concentration of the culture medium,and significantly increase the isobutyric acid concentration and ethylene-propylene ratio.Adding 1%and 2%YC can significantly increase the concentration of acetic acid in the culture medium under in vitro conditions,and adding 4%YC can significantly reduce the concentration of isovaleric acid.The different sources and different levels of YC will affect the fermentation parameters such as pH,propionate and ethylene-propylene ratio of sheep rumen in vitro fermentation.These results are expected to be used to guide livestock production practice.

关 键 词：酵母培养物 绵羊 瘤胃 体外发酵 

分 类 号：S816.6[农业科学—饲料科学]