? "Prevention is better than cure" means that the daily feeding management is more effective than its preventive measures, and the immunization measures for broilers are more effective than the treatment measures for related diseases. In the process of broiler feeding, attention should be paid to its daily feeding management, and drugs should be used as little as possible. It is an effective way to reduce the cost to carry out strict epidemic prevention in the general yard and each sub-yard according to the epidemic prevention procedure.

? Establishing the concept of "feeding is better than prevention, and prevention is better than cure" has a great positive impact on the quality and safety of chicken. The essence of this concept is to use less medicine or even no medicine, which can avoid the problem of drug residues that have been bothering farmers and enhance consumers' confidence in chicken quality and food safety.

As the saying goes, prevention is better than cure, and more resources must be spent to remedy it when it happens. In order to prolong life, improve the quality of life, save and rationally use medical resources and improve the physical quality of the whole people, the national medical service has developed steadily. From passive treatment to active health protection, it is inseparable from preventive medicine, which shows the importance of prevention in promoting our human health.

Prevention is the development direction of modern medicine. Preventive medicine is one of the three major disciplines that constitute modern medicine, a very important part of modern medicine, and a discipline with directional medical development. If preventive medicine is not developed, treatment will still be the mainstay, the social and economic burden will become heavier and heavier, the development of health undertakings will be restricted, and it will be difficult to continuously improve people's health level. Therefore, prevention first (preventive medicine) is the development direction of modern medicine.