Abuse of feed additives The abuse of feed additives based on the content of various nutrients in feed does not only increase the feed cost of chickens, but also destroy the balance of chicken nutrients. Blind prematurely raising the raising standards and increasing the nutrient content of the laying hens resulted in the early opening of laying hens, which resulted in a small body, premature aging and a short duration of egg production. Blind introduction does not consider the introduction of species to the local natural conditions and feeding conditions and market demand, or only the price is cheap, ignoring the quality of the introduction of chicks. Long-term medication for feeding chickens for a long time feeding various drugs, not only cause chicken kidney damage and waste of drugs, but also make bacteria resistant to drugs, seriously affect the future treatment of diseased chickens. Blind use of drugs encountered chicken disease without the veterinary diagnosis, blindly medication, thereby delaying the disease. The over-feeding of ingredients does not meet the nutritional standards required for different growth stages of the chicken. Adding some nutrients blindly in the feed results in an imbalance in various nutrients in the feed. Feed replacement feed replacement does not give the chicken a transitional period, causing an emergency response to the chicken. Sick and healthy polyculture raises chickens and healthy chickens in the same quarters. Feeding them in the same materials and polyculture raises the epidemic. Heavy vaccines do not sterilize and sanitize chickens before they are newly planted. They do not completely disinfect the chicken house. This can cause hidden dangers for various infectious diseases. Ignoring the elimination of low-yield and sick-disabled chickens only pay attention to the survival rate of chickens. Weak-chicken and remnant chickens are not eliminated in time. This will not only waste feed, but also reduce the benefit of raising chickens.