Accordingly, tetracyclines prefer being used as growth promoter to being used as antibacterial agent in Taiwan, because of their low effectivities against bacteria.

• 综上所述而言，在台湾四环素类抗生素常被喜欢用于禽畜之生长促进，胜过被用于抗菌目的，因为其抗菌效果已不良之故。