淀粉在反刍动物消化道的消化特性及整体供能方式优化  

Digested Characteristics of Starch in Digestive Tract of Ruminants and Its Whole Energy Supply Mode Optimization

作　　者：任豪[1] 雷新建 陈鲁豫 姚军虎[1] REN Hao;LEI Xinjian;CHEN Luyu;YAO Junhu(College of Animal Science and Technology,Northwest A&F University,Yangling 712100,China)

机构地区：[1]西北农林科技大学动物科技学院,杨凌712100

出　　处：《动物营养学报》2022年第7期4099-4107,共9页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：“十三五”国家重点研发计划(2017YFD0500500);国家自然科学基金(32072761,31672451,31472122)。

摘　　要：淀粉是高产反刍动物的主要能量来源,生产中常通过提高饲粮淀粉含量来增加饲粮能量浓度,以期提升动物的生产水平。此做法易导致瘤胃酸中毒和大肠酸中毒等代谢性疾病,严重危害动物健康,限制生产潜力的发挥。本文总结了淀粉在瘤胃、小肠和大肠降解利用的特点,比较淀粉在各消化位点为机体供能的差异,旨在为淀粉能量最大化供应进而充分发挥反刍动物遗传潜力提供理论依据。Starch is the main energy source for ruminants,and improving dietary starch content in feeding practices is often used to increase dietary energy concentration,aiming to promote the animal production.It’s easy to cause rumen acidosis and hindgut acidosis,which could damage the animal health and animal performance.This paper summarized the characterizes of starch digested in the rumen,small intestine and hindgut,and compared the differences of energy supplied by starch digested in different tract sites,in order to provide the reference for optimizing the energy supply of starch to promote the animal genetic potential.

关 键 词：反刍动物 淀粉 消化位点 能量效率 

分 类 号：S811.2[农业科学—畜牧学]