| 英文描述 | Outbreaks of necrotic enteritis occur spordically in chickens 4-8 wks of age, usually in broilers, and can also cause disease in other birds. The disease is caused by CLOSTRIDIUM PERFINGENS. C. COLINUM, often in association with C. PERFRINGENS, is the cause of ulcerative enteritis in quail and pigeons. C. COLINUM was described in 12-25 day-old broiler chickens in Israel with enterotoxemic-like signs such as high and sudden mortality, apathy, severe localized enteritis, and nephrosis. C. DIFFICILE has caused severe enteritis and enterotoxemia in ostriches. Mortality (6%) in chickens is usually low, but mortality in quail may exceed 50%. Outbreaks seem to follow coccidiosis. Differentiate between this disease and coccidiosis by examining scrapings of the damaged areas. Gram staining of smears of bowel scrapings reveals the gram-positive bacteria. |
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