张吉鹍;
ZHANG Ji-kun(College of Animal Science,Zhejiang University,Zhejiang Hangzhou 310029,China)

• 1:浙江大学动物科学学院 浙江杭州310029

摘要(Abstract)：

本文结合笔者的研究结果就评定粗饲料品质的单项指标粗蛋白、中性洗涤纤维、消化率与动物的粗饲料干物质随意采食量以及综合指标粗饲料相对值(RFV)、粗饲料分级指数(GI)在粗饲料品质评定上的应用进行了比较,指出:上述各单项指标并不能客观地反映粗饲料的品质,应使用综合指标。由于GI考虑了粗饲料中的能氮互作,对粗饲料的分级比RFV更精确。
The quality of forages varies considerably,especially when harvested at different stages of maturity.This review compared single indices(chemical consituents,IVDMD,and DMI) and integrative index(GI and RFV) in forage grading on the data of experiment,and concluded that single indices were hard to evaluate forage quality completely,integrative index should be used,and GI was more accurate than RFV in forage grading,because the interaction between energy and nitrogen was considered in GI,but further investigation is necessary.

关键词(KeyWords)： 畜牧学;品质评定;综述;粗饲料相对值;粗饲料分级指数
animal science;evaluation;relative feed value;grading index

Abstract:

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基金项目(Foundation):

作者(Authors): 张吉鹍;
ZHANG Ji-kun(College of Animal Science,Zhejiang University,Zhejiang Hangzhou 310029,China)

参考文献(References)：

• [1]张吉鹍.粗饲料分级指数参数模型化及粗饲料科学搭配的组合效应[D].呼和浩特:内蒙古农业大学动物科学与医学院,2004.
• [2]Tilley J M A,Terry R A.A two-stage technique for the in vitrodigestion offorage crops[J].J Br Grassland Society,1963,18:104-111.
• [3]王旭.利用GI技术对粗饲料进行科学搭配及绵羊日粮配方系统优化技术的研究[D].呼和浩特:内蒙古农业大学动物科学与医学院,2003.