摘要
酶主要是由细菌、真菌等微生物分泌产生,具有催化效率高、高选择性和绿色无毒害等特性。日粮添加酶制剂对提高饲料转化效率(feed conversion ration,FCR)及降低饲养成本具有重要意义。目前,关于酶制剂的应用大多集中在家禽、猪等单胃动物,且研究均表明添加酶制剂可显著提高生长性能、养分消化率、机体免疫力等。反刍动物因具有复杂的消化系统,酶制剂添加对机体作用机理、生化特性及影响因素尚不明确,致使酶制剂对反刍动物生产效果不太一致,故而限制了在反刍动物中的研究进展。本文综述了酶制剂的作用机制及其对反刍动物生长性能、养分消化率、瘤胃发酵与微生物区系的影响,旨在为酶制剂的进一步研究提供参考。
Enzyme is the mainly product of secretion from bacterial and fungal microbial, which has high catalytic efficiency, high selectivity, non-toxic and harmless. It is of decisive significance to improve the feed conversion ration and reduce the cultivating costs on enzyme preparation supplementation in diets. Studies on enzyme preparation have mainly focused on non-ruminant animals, which the results shown that enzyme preparation supplementation in diets can significantly improve growth performance, nutrient digestibility and body immunity. Ruminants have the complex digestive system, which the mechanism of enzyme preparation supplementation in diets remain unclear, all these prevent the research progress in ruminal nutrition. This article reviewed the mechanism of action of enzyme preparations and its application in ruminant production, nutrient digestibility, ruminal fermentation and microbial flora, which aimed to provide references for the further research.
作者
闫佰鹏
李发弟
李飞
YAN Baipeng;LI Fadi;LI Fei(State Key Laboratory of Grassland Agro-ecosystems / Key Laboratory of Grassland Livestock Industry Innovation,Ministry of Agriculture and Rural Affairs / College of Pastoral Agriculture Science and Technology,Lanzhou University, Lanzhou 730020, Gansu, China;Engineering Laboratory of Mutton Sheep Breeding and Reproduction Biotechnology in Gansu Province, Minqin 733300, Gansu, China)
出处
《草业科学》
CAS
CSCD
2019年第9期2395-2403,共9页
Pratacultural Science
基金
国家重点研发计划课题资助(2018YFD0502103)
公益性行业(农业)科研专项经费(201503134、2015-2019)
关键词
酶制剂
作用机制
反刍动物
生长性能
养分消化率
瘤胃发酵
微生物区系
enzyme preparation
mechanism
ruminants
growth performance
nutrient digestibility
ruminal fermentation
microbial flora
