Early laying hens are prone to pupa
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Symptoms of the disease chicken legs bent, legs soft, often in a lateral position, legs or legs stretching, pull yellow-white or yellow-green paste-like dung. When the ambient temperature exceeds 29°C, there are sporadic deaths. The higher the temperature, the higher the morbidity and mortality of chickens.
Prevention and control measures In the chicken house, ventilation and ventilation should be strengthened. Do not rush to raise the stocking density. Try to increase the feed intake of the chickens. In particular, the amount of vitamins in the feed should be promptly increased after 100 days of age.
Observe groundly and find out that the diseased chickens are isolated in time and use terramycin, scorpion bacillus net and other drugs to prevent diarrhea and secondary infection of chickens.
When the chicken enters the first stage of production, it must prevent the supply of nutrients from being insufficient. Appropriate amounts of vitamin AD3 or cod liver oil are added to the feed. Do a good job in sanitation and disinfection. According to the actual situation, appropriate amounts of antibiotics are added to the feed to prevent the occurrence of E. coli disease.