Incidence: Zhang, Shahe City, has scattered 800 chickens in the orchard. During the breeding period, local chickens were quarantined according to local immunization procedures. The situation has been good. After the start of production, egg production rose slowly, reaching 150 percent by the age of 150 days. Some chickens in the group were dazzled, scratched their heads and closed their eyes, and the individual size of the chickens was uneven. Three chickens with thin and weak diseased chickens came to Shahe. Municipal Animal Hospital.

The necropsy symptoms: 3 chickens had poor body condition, protruding sternum, and sagging chest muscles. The mucous membranes of the nasal cavity and larynx were flushed, and yellow sticky phlegm accumulated. The congestion of the tracheal ring was obvious. Open the body cavity, abdominal cavity accumulation of a large number of white foam-like transparent liquid, the appearance of the jejunum, ileum, intestinal wall densely covered with grain size grayish yellow necrotic nodules, cut open the intestine cavity, there is a large number of flat inside the bamboo-like locust. No obvious abnormalities were found in liver, kidney and other organs.

Diagnosis: According to the onset of symptoms, the above comprehensive necropsy symptoms were initially diagnosed as co-infected with coccidiosis in chickens.

Treatment: 1. As a result of free-range management, the chickens are in close contact with the feces for a long period of time, resulting in a large number of parasites. The breeding site should be completely cleaned up, feces should be collected for fermentation, and the site should be subjected to high-level disinfection.

2. Select sick and weak chickens in time for elimination.

3. Promptly take drugs and actively treat them. In the morning, serve the gospel once (praziquantel powder, 50g/bag, each bag is applied to 1000kg body weight chickens), and start the feeding of tilmicosin (tilmicosin) on the afternoon of deworming. Agent, 100 g/bag) 150 kg per bag of spices, the above drugs are calculated according to the amount of drinking water used throughout the day, and once in the afternoon. Use for 4 days.

By adopting the above comprehensive prevention and control measures, more than 50 thin and sick and frail chickens were eliminated from large groups. After the large group of chickens had finished using the drugs, no sick chickens appeared again.

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