中国畜牧兽医2017，Vol.44Issue(9)：2629-2637,9.DOI:10.16431/j.cnki.1671-7236.2017.09.013
体外法评价活性酵母及其发酵饲料对瘤胃发酵参数的影响
Effects of Active Yeast and Yeast Fermented Feeds on Rumen Fermentation Parameters in vitro
摘要
Abstract
This study was aimed to investigate the effect of active yeast and yeast fermented feeds on rumen fermentation parameters in vitro.13 strains active yeasts and their fermented feeds (7 strains of Saccharomyces cerevisiae,namely XR4,YL5,YN7,XL8,BC,SL and AQ;5 strains of Candida utilis,namely SC18,SR12,YJ2,YD6 and BY,and 1 strains of Candida tropicalis,namely BR) were chosen and rumen fermentation parameters were measured by in vitro gas production technique.The results showed that:There was no significant effects of active yeasts on gas production (P＞0.05),however,the gas production of SC18,XR4,BY,AQ and BC groups was significantly increased by the fermented feeds (P＜0.05).Meanwhile,the gas production rate of those fermented feeds was significantly higher than the corresponding active yeasts (P＜0.05).10 yeast strains and their fermented feeds significantly increased the bacterial crude protein production (P＜0.05),and the protein growth rate of most of these active yeasts was higher than that of fermented feeds (P＜0.05).The activie yeasts and fermented feeds showed no significant effect on ammoniacal nitrogen content (P＞ 0.05).Active yeast (YD6,BR,SC18,YL5,XR4,SR12,BY and BC) and yeasts fermented feeds (YD6,BR,YJ2,SC18,SR12,SL,YL5 and XR4) could significantly increase the total VFAs comapred to control group (P＜0.05).In conclusion,active yeast could significantly increase the contents of bacterial crude protein and total VFAs,especially the BY,XR4 and BC.Gas production,bacterial crude protein and VFAs were significantly increased by fermented feeds,especially SC18,BY and BC.Fermented feeds had shown better effect on the increament of the gas production and VFAs compared to active yeasts.关键词
活性酵母/酵母发酵饲料/体外产气法/瘤胃发酵参数Key words
active yeast/yeast fermented feed/in vitro gas production technique/ruminal fermentation parameters分类
农业科技引用本文复制引用
张政,张棋炜,杨晶晶,高民,胡红莲,刘大程..体外法评价活性酵母及其发酵饲料对瘤胃发酵参数的影响[J].中国畜牧兽医,2017,44(9):2629-2637,9.基金项目
内蒙古自治区科技计划项目(201602051) （201602051）
现代农业(奶牛)产业技术体系建设专项(CARS-37) （奶牛）
内蒙古科技厅专利转化项目(20140185) （20140185）
