MILK AND FAT YIELDS DECLINE IN BOVINE LEUKEMIA VIRUS-INFECTED HOLSTEIN CATTLE WITH PERSISTENT LYMPHOCYTOSIS

被引：65
|
作者：
DA, Y [1 ]
SHANKS, RD [1 ]
STEWART, JA [1 ]
LEWIN, HA [1 ]
机构：
[1] UNIV ILLINOIS,DEPT ANIM SCI,URBANA,IL 61801
来源：
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 1993年 / 90卷 / 14期
关键词：
BOVINE MAJOR HISTOCOMPATIBILITY COMPLEX; ECONOMIC LOSS;
D O I：
10.1073/pnas.90.14.6538
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Effects of bovine leukemia virus (BLV) infection on milk and fat yields were studied by using data collected from Holstein cows over a 6-year period. Milk and fat yields in BLV-infected cows with persistent lymphocytosis (PL) declined significantly relative to their BLV-infected non-PL herdmates. Declines were most pronounced in cows older than 6 years. The estimated loss to the dairy industry due to PL is more than $42 million annually. A major histocompatibility complex class I (BoLA-A) allele that has been previously associated with resistance to PL was associated with longevity and realization of milk production potentials, indicating that genetic resistance to PL will have an economic benefit in herds where BLV is endemic.
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收藏
页码：6538 / 6541
页数：4
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