鸡大肠杆菌病的合成抗菌药物防治方法是怎样的?
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① 磺胺类
磺胺嘧啶(SD),0.2%拌饲,0.1%?0.2%饮水,连 用3天;磺胺喹嗯啉(SQ),0.05%?0.1%拌饲,0.025%?0.05%饮 水,连用2?3天,停2天,再用3天。② 硝基呋喃类
呋喃唑酮,0.03%?0.04%混饲,0.01%? 0.03%饮水,连用3?5天,一般不超过7天。③ 喹诺酮类
环丙沙星、恩诺沙星、洛美沙星、
氧氟沙星等,预 防量为25X10—6,治疗量50X10—6,连用3?5天。(3) 联合用药0.3%?0.4%的
氯霉素拌料连用3?4天;氟苯尼 考5?8g/100kg或丁胺卡那霉素8?10g/100kg饮水3?5天等。