There are many cases of the dairy cow ulcer hoof disease in some farms of Ningxia in 2003~2005, which severely influenced the dairy cow production ability.
2005年在宁夏某奶牛场曾发生多次腐蹄病病例，严重影响奶牛的生产性能，用一般治疗方法其治愈率甚微。
There are many cases of the dairy cow ulcer hoof disease in some farms of Ningxia in 2003~2005, which severely influenced the dairy cow production ability.
2005年在宁夏某奶牛场曾发生多次腐蹄病病例，严重影响奶牛的生产性能，用一般治疗方法其治愈率甚微。
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