摘要
动物生产中饲料营养价值的高低直接影响动物的生产性能及畜产品的品质,实验室常用体外法来评价和估测饲料降解率。体外法主要通过测定底物如饲料降解后的残余量和发酵产物生成量(微生物数量、挥发性脂肪酸)或气体的产量来评价饲料营养价值。体外产气法是基于瘤胃发酵与产气高度相关的一种瘤胃体外模拟技术,该法具有简便、经济、快速、费用低等优点,目前在国内外多用于评价反刍动物饲草的饲用价值。作者主要综述了体外产气法在反刍动物生产中的应用及体外产气法中较为经典的发酵动力学模型。
Nutritional value of feedstuff has a direct impact on the animal performance and the quality of animal products. In vitro methods for laboratory estimations of feed degradation are important tools for ruminant nutritionist. These methods are measured either substrate disappearance by quantifying incubation residues or they record fermentation products such as microbial biomass, volatile fatty acid or gas production. In vitro gas production technology, which is based on the relationship between rumen fermentation and gas pro- duction, is a in vitro rumen simulation technique. It is simple, economic, quick and low cost, and wildly used to evaluate the nutrition- al value of feedstuff in ruminant production. The aim of this study is to describe the application and research advances of in vitro gas production technology on animal nutrition and classic mathematics models in this area.
出处
《中国畜牧兽医》
CAS
北大核心
2012年第10期128-133,共6页
China Animal Husbandry & Veterinary Medicine
基金
现代农业产业技术体系建设专项资金资助(nycytx-04-01)
关键词
体外产气法
营养价值评定
发酵动力学
in vitro gas production technology
nutritional value evaluatiom fermentation kinetic
