How to prevent and treat ulcerative enteritis in farmed quails

(l) epidemic characteristics: quail ulcerative enteritis is caused by Clostridium quail, which is one of the most serious diseases to quails, so it is also known as "quail disease". It is an acute infectious disease characterized by dysentery and intestinal ulcers. The disease is transmitted through the digestive tract and quails are infected by feeding on contaminated feed, drinking water or bedding. Quails of any age can get sick, but 4-12-week-old quails are the most common, with high morbidity and mortality.

(2) Clinical symptoms: acute cases often died suddenly without obvious symptoms, and almost the whole group was destroyed within 2-3 days. The dead baby quail has plump muscles, general sick quail spirit, loss of appetite, full of food in the bag, eyes closed and standing, bow back and neck, rough feathers, slow movement, abdominal swelling, diarrhea, drainage-like white feces, and severe emaciation in the later stage.

(3) changes of autopsy: the main pathological changes in acute cases were duodenum, extensive bleeding of intestinal mucosa and viscous fluid in the intestine. The liver is slightly enlarged and pale in color, with yellowish spots of different sizes. In chronic cases, irregular ulcers are formed on the mucosa of the small intestine and cecum, ranging from sesame to mung bean. The edge of the ulcer is bleeding and protruding, and there is a yellow or black necrotic pseudomembrane on the ulcer surface. Deeper ulcers can cause intestinal wall perforation, peritonitis and intestinal adhesion. Spleen congestion, bleeding, swelling.

(4) Prevention and control methods: ① reared the young quails on the iron net so that they did not come into contact with feces. Adult quails and young quails are raised separately. ② quails should be quarantined in time, feces should be cleaned and disinfected in time, dead quails should be buried or burned, and quail houses and sports grounds should be disinfected regularly. ③ should strengthen feeding management, increase nutrition in feed, supplement vitamin C, and add 300g per ton of feed. ④ drank 2 times of streptomycin + penicillin in the first 3 days, and then drank streptomycin + penicillin for 20 consecutive days. Combined with intramuscular injection of penicillin, 10 000 units per animal, once in the morning and evening, the effect was better. ⑤ was fed with 0.03% mixed diet of tetracycline or chlortetracycline for 7 days. Adding 0.1 to 0.2 grams of bacitracin zinc per kg of feed can be used as a feed additive.