Diagnosis and treatment of chicken enterotoxic syndrome

Due to abnormal climate change and large variation in temperature difference between day and night, enterotoxic syndrome characterized by diarrhea, undigested feed in feces, obvious decrease in feed intake, slow growth, weight loss, dehydration and decrease in feed reward often occurs in broilers and laying hens.

I. Clinical symptoms

The mental state of chickens is still good, but the growth is slow, the comb is pale, some sick chickens show white strip or mucus feces, there is undigested feed in the feces, the color of feces is slightly yellow, individual chickens appear depressed, shrink head, head tremor, run back and forth, easy to scream, and then paralysis. The incidence of disease in chickens is about 1%, residual chickens appear every day, and the mortality rate is 0.5%.

II. Changes in autopsy

Brain fluid in head, individual redness of thymus, duodenal swelling, thickening of intestinal wall, feeling very hard intestinal wall when touched by hand, no feed in intestinal canal, large amount of intestinal mucosa shedding, foam and tomato-like feces in individual intestinal segment; intestinal wall extroversion, rough intestinal mucosa, and purulent secretions; gallbladder becomes small and pale yellow, looks like no gallbladder phenomenon.

III. Pathogenesis and harm

The disease is caused by a coccidia parasitizing in intestinal mucosa cells, often mixed with some viruses and bacterial diseases, causing inflammation, swelling, thickening of intestinal wall and disintegration of a large number of epithelial cells, resulting in decreased secretion and absorption of intestinal tract, resulting in nutritional deficiency, reduced feed conversion and slow growth of some chickens. The toxic substances produced by epithelial cell disintegration accumulate in intestinal tract, causing autointoxication, manifested as depression, coma, paralysis, head tremor and other symptoms. Due to the large number of coccidia and bacteria, intestinal mucosal cells are rapidly destroyed, resulting in indigestion and obstacles to the absorption of various nutrients.

IV. Prevention and control measures

1. Isolate sick chickens, eliminate residual chickens, remove bedding and thoroughly disinfect them.

2, chickens with "ball net" drinking water every day, every 50g of water 100kg,"ribavirin" 50g mixed drinking, twice a day, with electrolyte drinking water at noon, for 3 to 5 days, after the condition improved with "quick supplement" drinking water for 2 days, so that the chickens to restore good mental condition.

3. Keep the chicken house clean and hygienic, avoid humidity, prevent the occurrence of Escherichia coli and coccidiosis, and regularly deworm.

4. When diarrhea is found, it cannot be mistaken for enteritis. Simply use drugs to treat enteritis, so as to avoid intestinal flora disorder and damage to intestinal mucosa.

5. Disinfect chickens regularly with disinfectant or mix disinfectant in sand regularly.