摘要
对湟中县黄牛改良工作进行了调查,分析了改良现状、改良效果及存在的问题,并对今后的改良工作提出了建议和改进措施.
The author surveied the work of yellow cattles, problems and gave some advice and improved measures for later improvement of yellow cattles.
出处
《青海师范大学学报（自然科学版）》
2008年第4期71-73,共3页
Journal of Qinghai Normal University(Natural Science Edition)
关键词
荷斯坦奶牛
改良牛
当地黄牛
冷冻配种
holstein cows
improved cow
local yellow cow
frozen mating
