The FIC index of tetracycline with ofloxacin or tylosin on Y-goat was 0.375.

• 红霉素与泰乐菌素对Y goat的联合药敏指数为1.；5；是无关作用; 四环素与氧氟沙星、泰乐菌素对Y 98的联合药敏试验指数均为0