To prevent the outbreak of disease in chickens, it is necessary to control the three links of infectious diseases. The three important links of infectious diseases are the source of infection, the route of transmission and the susceptible chickens. Any of these three links is eliminated, no infectious disease will occur. As we all know, it is difficult to control the source of infection and the way of transmission in the current society, which is caused by the environment.
For farmers, what can be controlled is their own small environment, that is, the biosecurity measures of the chicken farm and the management of susceptible chickens. One of the important measures is to protect the susceptible flocks and make the flocks have enough resistance to resist the occurrence of diseases. There are only two ways to make chickens have a sufficiently high resistance: one is to increase the non-specific resistance of the chicken, which is what we often call the body’s comprehensive disease resistance. The other is to increase the specific resistance of the chicken. It is to increase specific resistance to certain specific diseases such as Newcastle disease, avian flu and infectious bronchitis. The improvement of the body’s comprehensive ability is mainly achieved by providing high-quality feed and strengthening feeding management so that the chickens are always in a healthy state. As for the specific resistance, it is mainly produced by vaccination.
How can we produce high specific immune resistance? This problem mainly depends on a reasonable immunization program suitable for one’s own chicken farm. Whether the immunization program is reasonable or not mainly depends on factors such as the excellent vaccine, reasonable immunization route, correct immunization operation, timely immunization age, vaccine immunization dose and sufficient response ability of the flock, and also minimizing the immunity of the flock during the blank period, all of which are indispensable.
1. High-quality vaccine
Choosing one or several high-quality vaccines suitable for local conditions is the key to obtaining high specific resistance. It depends on the vaccine strain, the amount of antigen, the pros and cons of the adjuvant, the production technics and the process. Whether the vaccine is of high quality should consider the following factors.
1.1 Manufacturers that are creditworthy, high-tech, well-managed and serious are the first choice.
1.2 Product performance depends on whether the vaccine to be selected is suitable for your chicken farm, whether it is suitable for the 13-year-old chickens, whether it is conducive to the continuous breeding of the chicken farm, whether the virus strain and antigen quantity of this vaccine are sufficient, and what is the response period, the advanced level of oil seedling production technology are all the factors that must be paid attention to.
1.3 Appearance inspection of specific products – The validity period, production date and appearance changes of the introduced vaccines, whether the attenuated vaccines are out of vacuum, whether they are broken, contaminated and moldy, whether the oil emulsion vaccines are stratified, etc.
1.4 External evaluation of vaccines – It is also more important to select vaccines through the research and evaluation of vaccine application effects.
1.5 The storage and transportation of vaccines should be stored at 2-8°C. Chinese local made attenuated vaccines are stored at low temperatures, while imported vaccines are stored at 2-8°C, etc. However, this must be specified according to the manufacturer. It’s scientific to preserve the vaccine by using the instructions.
2. Reasonable immune route
Any vaccine has a certain immune route. For example, the attenuated vaccine is suitable for nasal drops, eye drops, sprays, drinking water, and injections. Oil emulsion vaccines can only be used for injections, not drinking water, nose drops, eye drops, and sprays. The specific vaccine immunization pathways are different, and the effects achieved are also different. Attenuated vaccines for respiratory infectious diseases such as bronchus, larynx, Newcastle disease and avian influenza are mainly immunized through mucosal immunization. The effect of immunization routes such as the IV series (Clone 30) vaccine of the epidemic is followed by nose drops and sprays; the immune effect of throat transmission is to rub the anus, eye drops and nose drops, but the vaccines of eye drops and nose drops have a greater response; infectious encephalomyelitis are suitable for the use of eye drops, drinking water.
3. Immunization operation
The immunization operation is resolutely carried out in accordance with the formal method accurately, ensuring that there is no future trouble. When the drinking water immunization vaccine is opened, the vaccine bottle should be opened in the water to prevent the vaccine in the vacuum state from being ineffective due to sudden pressure and direct contact with air; For nose drops, eye drops, injections, punctures and anus drops, it should be diluted with a syringe and slowly inject the diluent into the vaccine bottle for dilution; try to dilute with non-ionized water when immunizing infectious bursal disease vaccine; it is best to pre-warm the inactivated vaccine before use, and use it when the vaccine reaches room temperature; During spray immunization, chickens should not have respiratory diseases. Pay attention to the temperature and humidity of the chicken house, prohibit ventilation. Do not use tap water to dilute the vaccine, and treat the used vaccine waste and oil seedling bottles in a harmless manner.
4. Timely immunization age
The immunization age is a more important aspect of the chicken immunization program. The immunization age is determined according to the law of antibody growth and decline in the chicken population, antibody detection conditions refer to the epidemic situation of the external environment, the use period of the vaccine, etc.. And it needs to be performed when the body’s antibodies against a certain disease are low Vaccination against this disease. How well this issue is mastered is a decisive factor, which determines the success of this procedure. During the immunization process, antibody testing is a scientific means to determine the age of immunization. Therefore, it is hoped that qualified veterinarians will be engaged in this aspect of work, which is necessary and effective. In the practice of the past few years, more and more farmers have realized the importance of antibody testing, which has solved larger problems for the farms, and has important practical significance for the prevention of epidemics. It can also be said that it has a long history significance.
5. The immunization dose
The immunization dose of the vaccine should be determined according to the immunization route of the vaccine, the age of the flock and the epidemic situation of external environmental diseases. Generally, injections, nasal drops, eye drops, and anal rubbing can be used according to the instructions. When using drinking water for immunization, the dose should be doubled. For spray immunization, the immunization dose should be appropriately increased according to the temperature and humidity in the house. The dose for basic immunization is lower, and the dose can be doubled when boosting immunity. When external epidemics are prevalent, the immunization dose can be appropriately increased, etc. However, it should be noted that the dose of immunization cannot be increased blindly. Frequently increasing the dose of immunization blindly can easily cause immune paralysis, which will make the chickens unable to produce antibodies or only produce lower antibodies, so that the chickens cannot be protected.
6. Enough vaccine response capacity of chickens
The response capacity of chickens in vaccine immunization is often overlooked. Most farmers believe that the chickens will have sufficient immunity as long as they are immunized according to the immunization program. This is wrong. During immunization, the chicken flocks often have immunosuppression.
6.1 When chickens use mycotoxin-containing feed, will produce strong immunosuppression. The large amount of mycotoxins in some corn makes chickens suffer severe immunosuppression. As a result, the vaccine immunity cannot reach the expected level. As a result, a series of epidemics occurred.
6.2 Immunosuppressive diseases – When chickens encounter infectious bursal disease, coccidiosis, reticuloendothelial hyperplasia, leukemia, Marek’s disease, infectious anemia and reovirus infection, the chickens suffer from immune suppression. It will not achieve the desired effect when immunized. When Newcastle disease occurs, there are necrotizing lesions in the spleen, lymphocytes in the germinal center of the cortex of the spleen and thymus are destroyed, and local vacuoles are transformed. The medulla of the bursa of fabric is degenerated, which easily leads to immunosuppression. In recent years, the impact of the occurrence of bird flu and Newcastle disease on society is obvious to all. Bird flu has been immunized against Newcastle disease just before, but after the outbreak of the flu, it has been followed by Newcastle disease.
How to select correct poultry immune device
HIGHTOP poultry immune machine is a ULV cold fog poultry immune device and vaccination device.
Features:
- By changing the different diameters of the nozzle and controlling the precision of the particles, it can meet the needs of all types of poultry spray immunity.
- Its unique air pressure automatic control design ensures that the vaccine will not leak during use.
- Because it is portable, it makes the operation more flexible and can be adjusted to improve the overall immune effect.
- At the same time, it can also be used as a vaccination device. The wireless constant temperature control display system can effectively maintain the active vaccine.
Hightop is one of the best poultry equipment suppliers and manufacturers in China. We have more than 15 years of experience in poultry farm equipment, and can provide customers with a full range of poultry equipment and services.
If you have any questions about chicken farm equipment, please contact us immediately.
