论文部分内容阅读
近20年来,中国优质黄鸡的生产得到了迅猛的发展,黄鸡生产每年以15%左右的速度增长,1980年出栏1.5亿只,1990年出栏6亿只,1998年出栏达到15亿只。黄鸡生产已占大陆白羽肉鸡生产的30%。与快大肉鸡不同,中国黄鸡从长速上可分为三种类型:即快长型
In the recent 20 years, the production of high-quality yellow chickens in China has witnessed rapid development. The production of yellow chickens has grown at a rate of about 15% annually in 1980, with 150 million slaughtered in 1980, 600 million slaughtered in 1990 and 1.5 billion slaughtered in 1998 only. Yellow chicken production has accounted for 30% of the production of white feather broilers in China. Different from fast-bred chickens, Chinese yellow chickens can be divided into three types from long-speed: long fast type