When broilers are raised to a certain age, the contaminants and pathogens in the house are accumulated to a certain extent. When the broilers are jeopardized in the growth of broilers, they are transferred to new houses that are separated or adjacent to each other. Clean, disinfect and dry the contaminated chicken houses and wait for rotation. Broilers live in the new house for a certain period of time. After they are contaminated to a certain extent, they are transferred to the completely disinfected original house. This kind of regular rotation keeps the broilers in a good environment. Feeding. The application of this technology in the production of broiler chickens will help solve the three problems that may easily arise in intensive, high-density feeding: (1) Solve the problem of the accumulation of environmental pollutants in the homes, resulting in a decline in production performance and a high passive mortality rate. 2 to solve other technical measures in the breeding period can not completely remove the pollutants and disinfection and other issues. 3 Resolved severe environmental pollution in the homes, the use of a large number of drugs, resulting in excessive drug residue, affecting the development of green food and exports and other issues. The occurrence of infectious diseases has the following conditions: 1 a certain amount and sufficient virulent pathogenic microorganisms. 2 Susceptible animals with this infectious disease. 3 has an external environment that promotes the intrusion of pathogenic microorganisms into susceptible animal organisms. By adopting this technology, the aforementioned conditions for the occurrence of infectious diseases can be eliminated. For example, Condition 1, due to the timely and thorough removal and cleaning and disinfection of pollutants and pathogens, combined with other technical measures (such as isolation and treatment of sick chickens and disinfection, environmental management, chicken disinfection, drug prevention, etc.), can be completely eliminated or Reduce the damage of pathogenic microorganisms to broilers. For conditions 2 and 3, due to the regular transfer of broilers to a suitable environment for growth, isolation of contaminants and pathogenic microorganisms for pollution-free fermentation, broiler body state (immune) increases with growth. At the same time, this kind of clean and dry hen house environment is not suitable for pathogenic microorganisms to survive or reproduce, and quickly dies. It is difficult for pathogenic microorganisms to exert their pathogenic effects. In theory, the combination of this technology and other technical measures can completely eliminate the occurrence and epidemic of infectious diseases. However, in practice, many other factors will affect its effectiveness. These factors include: 1 poor quality chicken broiler, carrying a large number of vertical pathogens, particularly virus pathogens. 2 abuse of vaccines. Excessive or high-density use of vaccines can lead to the death of susceptible broiler chickens and make them immune to failure. The vaccine has a certain virulence and can be transmitted. In the blank period before the body does not produce specific immunity, the body's resistance is significantly reduced, the feed intake is decreased, and it can easily cause chronic respiratory diseases, E. coli diseases, coccidiosis and other diseases. Occurrence or even epidemic, leading to the virus into the sheds and environmental pollution and other hidden dangers. In summary, due to defects in vaccine production, especially safety defects, the use of vaccines should have a certain limit. If you use a vaccine, you must purchase a good quality vaccine and follow the instructions carefully. For the prevention of viral diseases, the author advocates that strict regulation of feeding, management, and disinfection measures should be adopted to completely prevent the occurrence and epidemic of viral infectious diseases, thereby improving production performance and survival rate. The reason is that the virus must grow and replicate in the living cells of the living organism. The virus cannot reproduce in the external environment. Most viruses have poor resistance to external physical and chemical environments, and are easily dead (short of survival time); viral infectious diseases mainly occur due to vertical Carrying a large number of viruses, live vaccines used too much or too dense, home environment serious pollution, the body's immune system will decline. 3 chicken house quality, feed quality, ventilation quality and so on. Points to note when adopting this technology: 1 Other technologies and management must be integrated. 2 The drug is prevented from sterilizing in the 3 days before the transfer, and the chickens are transferred to the group after disinfection. During the transition process, weak and weak chickens should be isolated, treated or eliminated. The pollution to the new house should be reduced, and the time and effect of using the new house should be extended. 3 Turning groups should be performed at night, and the temperature should be appropriately increased to prevent trauma and stress. 4 Based on practical experience, the pollution status of the house, etc., determine the best number of days of rotation. Broilers are generally 15 to 20 days, and 2 to 3 transfers are appropriate. After the last transfer, the original house is immediately disinfected and expanded immediately. sell. The occurrence and epidemic of infectious diseases are extremely complex, affecting many pathogenic factors, but it is nothing but a poor environment in the chicken house that leads to a decline in the body's immunity and a large number of pathogenic microorganisms. By adopting the technology of regular isolation and rotation of chicken coops, the problems in these two aspects can be effectively solved, and the production performance and survival rate can be improved. In combination with other technical measures, the occurrence and epidemic process of infectious diseases can be completely blocked. The regular isolating of the technique of prevention and control of infectious diseases in rotating henhouses supplements the problem that other technical measures cannot thoroughly remove pollutants and pathogens during the rearing period. It can be completely disinfected during the rearing period to prevent the pathogen accumulation of contaminants from harming the broilers and improve the production performance and survival rate. In the period of accumulation of pollutants and pathogens, the timely and thorough disinfection of the transferred chickens and the removal of off-site or off-site fermentation treatment are the main means for low-cost prevention of infectious diseases, and have a certain significance for the prevention, control, and suppression of infectious diseases.
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