| The treatment of birds suspected or known to be infected with psittacosis caused by Chlamydia psittaci is accomplished using chlortetracycline (CTC) in the feed. Water treatment with the drug is not successful. The drug tends to undergo degradation (losing potency as it exists in water) and the intake of the drug from water is less than required because the birds refuse to a major extent to drink the water with the CTC in it. So far, strains of C. psittaci have responded to the treatment, but the owner of the bird(s) has to understand that there is always the possibility of a resistant strain of the bacteria occurring. For this reason one should remain in contact with their veterinarian to follow the course of the disease from its stage of illness to the conclusion of its successful treatment. If at the mid point of treatment no change for the better is obvious in the bird's health then the bird should be reexamined by the veterinarian, and cultures may need to be taken for testing of resistance to CTC or the possibility of a complicated clinical situation. The amount of CTC that is needed is 1% (10 mg per gram) of diet. The diet must be fed for 45 days to insure that the treatment is effective. Although the birds may overcome their sick appearance and look very healthy, be sure to continue the treatment for the 45 days. The reason to do that is because early withdrawal from the treatment can result in a relapse or return of the disease. Use a calendar to keep track of the time for treatment and make a note of the day you start and the 45th day later. This may sound basic, but you would be amazed at the high percentage of bird owners that lose track of time. |

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