土霉素属于四环素类,为广谱抑菌剂。可使碱性磷酸酶、血尿素氮、血清淀粉酶、血清胆红素、血清氨基转移酶(AST、ALT)的测定值升高。长期用药应定期检查血常规以及肝、肾功能,因为土霉素易引起肝毒性。
土霉素可透过胎盘屏障进入胎儿体内,沉积在牙齿和骨的钙质区内,引起胎儿牙齿变色、牙釉质再生不良及抑制胎儿骨骼生长。就会出现所谓的“四环素牙”。但是鸟类没有胎盘,但是也可能会引起排卵期鸟蛋外壳的硬度,所以为了避免出现软壳蛋,不建议给发情期的母鸟喂食土霉素。·············································································································································································
以上网上找来的,大家可以去查查土霉素的危害