Chlortetracycline (CTC) Feed Grade is a broad-spectrum antimicrobial drug with a long history of use in animals which is usually administered in the feed for prophylactic purposes. It is classified as tetracycline antibiotics with good bacteriostatic effects against both gram positive and gram negative bacteria, mycoplasma, chlamydia, rickettsia, tubercle bacillus and virus. 

It is active in the inhibition and treatment of white dysentery, enteritis, pheumonia, typhoid, paratyphoid, cholera etc. in poultry and livestock. 

Chlortetracycline can also promote the permeation and absorption of the nourish elements, stimulating hypophysis to produce hormone and adjusting appetites. It results in obvious growth promotion for poultry, livestock and so on, also greatly increases the reward of feed.