In another study, reported by Sweeney and his associates, 2 demethylchlortetracycline was shown to be 25 per cent less active than chlortetracycline, but three times as active as either tetracycline ...

Antibiotics play an important role in controlling infectious disease. Many antibiotics used in clinical practice are naturally occurring, such that resistance to antibiotics among bacteria predates ...

Although tetracyclines are an important class of antibiotics for use in agriculture and the clinic, their efficacy is threatened by increasing resistance. Resistance to tetracyclines can occur through ...

Producers should use the withdrawal of calf milk replacers medicated with chlortetracycline as a wake-up call for addressing calf management. The antibiotic was banned from inclusion in ready mixed ...