中国荷斯坦万公斤青年牛的生产性能  

The Growth Traits of the Chinese Holstein Cows Which Have Ten Thousand Kilograms Milk

作　　者：李强 李琰[2] 买热木[2] 牛志宏 肖锐 张建军 刘水涛 魏殿辉[2] 

机构地区：[1]新疆动物胚胎工程技术研究中心,新疆乌鲁木齐830000 [2]新疆呼图壁种牛场,新疆呼图壁831203

出　　处：《草食家畜》2009年第3期33-35,共3页Grass-Feeding Livestock

摘　　要：万公斤奶牛是指一个泌乳期305d产奶量达到或超过一万公斤的个体。奶牛投产后的第一胎习惯上又被称为青年牛,一般情况下青年牛产奶量不是很高,一个泌乳期305d产奶量能达到一万公斤的个体更加少见。新疆呼图壁种牛场牧一场1955年建立,饲养的奶牛品种为中国荷斯坦。1990年该场在大群饲养条件下开始自然出现万公斤奶牛,到2006年底该场已出现万公斤奶牛289头501个胎次,其中万公斤青年牛14头,占胎次比例2.8%,占同期投产青年牛(1646头)的比例仅为0.85%。It is called ten thousand kilograms milk cow that the eow have 10,000 kilograms milk or more in a lactation period about 305 days.They are called youth cow before they have the frist baby. Usually, the yield of the youth milk cow is not very high. It is very rarely that the milk cow have 10,000 kilograms milk in a lactation period about 305 days. The Xinjiang HuTuBi Cattle farm was found in 1955. In this cattle farm the Chinese holstein cow are raised. The ten thousand kilograms milk cow was found in this cattle farm from 1990. A total of 501 progeny were generated from 289 ten thousand kilograms milk cows in this farm untill 2006. There are 14 youth cows in this ten thousand kilograms milk cows, with the frquency of 0.85%（14/ 1646）.

关 键 词：万公斤 青年牛 后裔测定 

分 类 号：S823.91[农业科学—畜牧学]