There are many cases of the dairy cow ulcer hoofdisease 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。
2
The content of Cu in serum and hoof horniness of normal milk cows was lower than hoofdisease milk Cows, but the content of Zn in serum of normal higher than of hoofdisease Cows.
正常牛蹄角质和血清中铜含量低于病牛，而正常牛蹄角质和血清中锌含量高于病牛。
3
Shy by nature, Sheep are not the most practical of people and, although well-mannered, they may occasionally suffer from "hoof-in-mouth disease" by saying the wrong thing at the wrong time.