1, the feed nutrition is single, do not pay attention to the quality of the feed, or the feed stock is too much, long-term use, vitamins and some nutrients loss, the feed moldy deterioration.

2, the chicken farm should pay special attention to the distance from other chicken farms. If the distance between the houses is too small, there will be serious environmental pollution. It is easy to cause the spread of the disease.

3, neglect the disinfection work chicken farm does not have a sound disinfection management system and procedures; do not pay attention to the disinfection of the chicken house environment; use low-cost disinfection drugs, or reuse a
disinfectant; do not pay attention to the cleaning of utensils, utensils and syringes disinfection.

4, neglecting the daily management, we must observe the growth status of the chicken, use the breeding equipment to raise chickens, and arrange the work reasonably.

5, the chicken poultry farming equipment has poor environmental conditions, the air in the house is dirty, the flow is not smooth, and a large amount of harmful gases such as carbon dioxide and ammonia are generated; the sewage inside and outside the chicken house overflows, the manure is not cleaned in time, the temperature is high and low, and the humidity is too large. Or too small; the outside noise is relatively large, resulting in poor chicken environment, causing a variety of diseases.