两个奶牛场DHI测定效果分析  

DHI Measurment Effect Analysis of Two Dairy Farm

作　　者：蔡涛 白延琴 史天民 徐文华 刘超 辛亚平[6] 

机构地区：[1]陕西省渭南市畜牧技术推广中心,陕西渭南714000 [2]陕西省延安子长畜牧兽医局史家畔畜牧兽医站,陕西延安717300 [3]陕西正大有限公司,陕西咸阳713800 [4]陕西省榆林市榆阳区畜牧站,陕西榆林719000 [5]陕西省延安洛川县畜牧局,陕西延安727400 [6]西北农林科技大学动物科技学院,陕西杨凌712100

出　　处：《中国牛业科学》2012年第5期33-36,共4页China Cattle Science

基　　金：国家863项目(2010AA10Z101;2011AA100307;2011ZX08007-002;2011KTCL02-11;2012BAD12B07);MATS-Beef Cat-tle System;陕西省农业攻关项目(2010K02-13)资助

摘　　要：[目的]DHI(Dairy Herd Improvement牛群改良)牛奶测定技术是奶牛饲养的核心技术,旨在加强牧场的管理基础和遗传基础,提高奶牛生产的产量、质量和效率。本文在西北农林科技大学教学实验奶牛场和西安草滩奶牛一场进行了DHI测定。[方法]对DHI报表中体细胞数、乳脂率、乳蛋白率、产奶量四项基本测定内容进行了分析。[结果]表明,西安草滩奶牛一场奶牛乳中体细胞数(35.0万个/mL>42.0万个/mL)和产奶高峰日(89.30d>66.20d)均大于校实验牛场。[结论]西安草滩奶牛一场脂蛋比低于正常水平(F/P<1.12),校实验牛场脂蛋比高于正常水平(F/P>1.12)。[Objective]DHI（Dairy Herd Improvement）technology is the key technology of dairy feed- ing, which can be attribute for enhancing the management of rangelands and genetic basis, as a result to raise dairy production yield, quality and efficiency. DHI data were collected from experimental dairy farm of Northwest A＆F University and a dairy farm of Xi＇an. [Method]Four basic contents in DHI data, which were somatic cell count, milk fat, milk protein percentage, yield and performance, were analyzed. [Re sult]The result showed that the somatic cell count （0.35 million/mL〉0.40 million/mL） and milking peak day （89.30 d〉66.20 d） in Xi＇an Caotan dairy farm were both higher than that of experimental dairy farm of Northwest A＆F University. [Conclusion]The F/P of Xi＇an Caotan dairy farm （F/P〈1. 12）was lower than the normal level. While the F/P of experimental dairy farm of northwest AgaF university（F/P〉 1.12）was higher than the normal level.

关 键 词：DHI 奶牛 遗传改良 

分 类 号：S823.91[农业科学—畜牧学]