Influence of yeast on rumen fermentation,growth performance and quality of products in ruminants:A review

作     者：Abdulmumini B.Amin Shengyong Mao Abdulmumini B.Amin;Shengyong Mao

作者机构：Centre for Ruminant Nutrition and Feed Engineering ResearchCollege of Animal Science and TechnologyNanjing Agricultural UniversityNanjing210095China Department of Animal ScienceFederal University DutseP.M.B 7156DutseJigawa StateNigeria Jilin Inter-Regional Cooperation Centre for the Scientific and Technological Innovation of Ruminant Precision Nutrition and Smart and Ecological Farming132109JilinChina 

出 版 物：《Animal Nutrition》 (动物营养（英文版）)

年 卷 期：2021年第7卷第1期

页      面：31-41页

核心收录：

学科分类：090502[农学-动物营养与饲料科学] 0905[农学-畜牧学] 09[农学] 

基　　金：the Jiangsu Agricultural Science and Technology Innovation Fund(CX(19)1006) 

主　　题：Yeast Rumen fermentation Conjugated linoleic acid Biohydrogenation Milk yield Meat quality 

摘      要：This review aims to give an overview of the efficacy of yeast supplementation on growth performance,rumen pH,rumen microbiota,and their relationship to meat and milk quality in *** practice of feeding high grain diets to ruminants in an effort to increase growth rate and weight gain usually results in excess deposition of saturated fatty acids in animal products and increased incidence of rumen *** supplementation of yeast at the right dose and viability level could counteract the acidotic effects of these high grain diets in the rumen and positively modify the fatty acid composition of animal *** exerts its actions by competing with lactate-producing(Streptococcus bovis and Lacto-bacillus)bacteria for available sugar and encouraging the growth of lactate-utilising bacteria(Mega-sphaera elsdenii).*** is known to convert lactate into butyrate and propionate leading to a decrease in the accumulation of lactate thereby resulting in higher rumen ***,this creates a conducive environment for the proliferation of vaccenic acid-producing bacteria(Butyrivibrio fibrisolvens)and ciliate protozoa,both of which have been reported to increase the ruminal concentration of trans-11 and cis-9,trans-11-conjugated linoleic acid(CLA)at a pH range between 5.6 and *** addition of yeast into the diet of ruminants has also been reported to positively modify rumen biohydrogenation pathway to synthesise more of the beneficial biohydrogenation intermediates(trans-11 and cis-9,trans-11).This implies that more dietary sources of linoleic acid,linolenic acid,and oleic acid along with beneficial biohydrogenation intermediates(cis-9,trans-11-CLA,and trans-11)would escape complete bio-hydrogenation in the rumen to be absorbed into milk and ***,further studies are required to substantiate our ***,techniques like transcriptomics should be employed to identify the mRNA transcript expression levels of genes like stearoyl-CoA des