The impact of mad cow disease in Europe, USA and Japan resulted in more stringent testing of cattle and the banning of the practice of feeding cattle remains to livestock.

 
  • 狂牛病对欧洲,美国和日本的冲击,造成对牛测试更加的迫切,而且更严格的禁止以动物尸体来喂养家畜类。
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