Prevention and Treatment Methods and Practical Tips for Chicken Cloacitis

I. Disease Overview:

Cloacitis, commonly known as leukorrhea or post-anal gonorrhea, is an ulcerative inflammation occurring in the cloaca and anus. A white viscous discharge flows from the anus of diseased chickens, with a pungent odor. This disease is a venereal disease of chicken flocks.

II. Epidemiological Characteristics:

Its pathogen has not yet been isolated. Experiments show that cloacitis cannot necessarily be considered an infectious or contagious disease. During natural outbreaks (even if lasting for several months), healthy chickens do not become infected. Even when lesion tissue is smeared onto the cloaca of healthy chickens (with the cloaca cut open), the chickens still do not develop the disease. However, it is believed that roosters can transmit it to hens during mating, so affected birds should be isolated immediately.

III. Clinical Symptoms:

Diseased chickens have poor appetite, are emaciated, and their combs, wattles, and faces appear grayish-white rather than the bright red seen during egg production. The anus is red and swollen, with surrounding feathers contaminated by foul-smelling purulent material, and pseudomembranes often form at the edges of the anus. In severe cases, tissue around the anus ulcerates and sloughs off, forming ulcers. Sometimes the inflammation can spread to the rectum. Due to irritation of the anal area, diseased chickens strain forcefully, which often causes cloacal prolapse and triggers feather-pecking and vent-pecking behavior in the flock.

IV. Necropsy Findings:

The ovaries are undeveloped, and purulent foci are present in the oviduct and rectum.

V. Differential Diagnosis:

This disease and salpingitis both present with symptoms such as red and swollen anus and discharge of foul-smelling secretions. Diagnosis must be carefully differentiated based on their respective clinical symptoms and necropsy characteristics.

VI. Prevention and Treatment Measures:

1. Immediately isolate and raise diseased chickens, trim the soiled feathers near the anus, remove necrotic tissue from the anal area, and flush with a mild 3% chromic acid aqueous solution or 10% alum solution once every 3-4 days. Recovery can be achieved in about 3-4 days.

2. After local treatment as described above, apply 5% chlortetracycline ointment. Generally, 2-3 applications will show effectiveness.

3. For the flock, florfenicol preparations, AD3, tilmicosin, etc. can be administered.