Experimental and clinical trials of long acting oxytetracycline in the treatment of canine ehrlichiosis

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Abstract
Four splenectomized dogs were experimentally infected with Ehrlichia canis and treated at the point of illness with long acting (LA) Oxytetracycline at different dosages. Terramycin LA, when given at a dose of 20mg/kg body weight (deep intramuscularly) twice, at a four‐day interval, was found to have effectively controlled the disease and has replaced the usual 7–14 successive days’ treatment regimen when other groups of tetracycline drugs arc used. Predej® 2X* at the rate of 2 mg given intramuscularly concurrently eliminated the local inflammatory reaction caused by the injection of Terramycin LA. Twenty‐four out of the 26 naturally infected dogs which were treated in a similar way were completely cured; one died before it could receive the full treatment, and another received a second medication five weeks after the first treatment, showing recurrent epistaxis; blood samples taken from this dog were negative for E. canis.