Comparative Efficacy of Tulathromycin and Ceftiofur for Treating Undifferentiated BRDC and Tulathromycin Metaphylaxis in Dairy Cattle

土拉霉素和头孢噻呋治疗未分化牛呼吸道感染的疗效比较及土拉霉素在奶牛中的预防作用