At present, since there is no effective vaccine which can prevent the cow mastitis, dairy cattle farmers in China are more helpless when confronted with the intractable mastitis.
目前国内还缺少预防奶牛乳腺炎的效果较好的疫苗，我国众多奶牛养殖户在顽固性乳腺炎面前束手无策。
Total of 111 feed samples, including corn, corn silage, grass, grass silage and mixed feed, were collected from different pig, cattle, dairy and chicken farms in Germany and China.
用此方法检测了来自德国和中国的猪场、牛场以及鸡场的饲料样品共111份，包括玉米、玉米青贮、牧草青贮以及混合饲料和牧草。
Total of 111 feed samples, including corn, corn silage, grass, grass silage and mixed feed, were collected from different pig, cattle, dairy and chicken farms in Germany and China.
用此方法检测了来自德国和中国的猪场、牛场以及鸡场的饲料样品共111份，包括玉米、玉米青贮、牧草青贮以及混合饲料和牧草。
应用推荐