Method and precautions for pig farm vaccine recovery

Vaccine rewarming is one of the necessary technologies for various large-scale farms. The vaccine response will reduce the stress response to piglets in the future. In this process, it should be noted that the vaccine prefers a stable and suitable temperature, and cannot repeatedly "low temperature - high temperature - low temperature", otherwise it will easily lead to vaccine failure.

Pig farm vaccine warming method and precautions

1, the concept of warming

Vaccine rewarming means that the vaccine is taken out of the refrigerator and placed at room temperature or warm water to raise the vaccine to 20-25 ° C to facilitate immunization.

2. Why does the vaccine need to be warmed up?

(1) Reduce cold stimulation: Inactivated vaccine is stored at 2-8 °C. The temperature difference between the vaccine temperature and the normal body temperature of the animal is relatively large (30 °C). It is easy to increase the cold stimulation to the immunized animals without returning to the temperature;

(2) Convenient use and uniform dosage: within a certain temperature range, the viscosity of the oil seedlings decreases with the increase of temperature, the volume will expand with the increase of temperature, the dose of immunization injection is not uniform, and the vaccine is poorly punctured. .

3. What temperature is appropriate for the vaccine to warm down?

The vaccine temperature is the same as the animal's body temperature, but the temperature does not need to reach the animal's body temperature! The vaccine can be warmed to the ambient temperature of the farm, usually 20-25 °C.

4, the method of returning temperature

(1) Hand grip method, suitable for a small amount of vaccine: inactivated vaccine (liquid vaccine), after taking out the diluent, hold it for 3 minutes, then return to warm to 23 °C. The lyophilized vaccine needs to be held for 5 minutes.

(2) Constant temperature water bath method, suitable for batch temperature recovery: adjust the water bath to 35 °C, then put the vaccine inside, usually 5 minutes. You can also experiment with free seedlings, open the lid, insert a thermometer, and observe the time required for the temperature to reach 25 °C.

Without this tall water bath, what about? You can mix it with cold water and hot water to 35 ° C, and put the vaccine in properly.

(3) Natural rewarming method: The vaccine is placed at room temperature, and the temperature is naturally raised. It is greatly affected by the ambient temperature and vaccine loading.

The higher the ambient temperature, the faster the temperature is recovered; the larger the vaccine is, the slower the temperature is. The difference in the temperature of the different adjuvants and vaccines is not significant;

Environment 35 ° C: 100 ml vaccine takes 60 minutes;

Environment 35 ° C: 20 ml vaccine takes 30 minutes;

Environment 20 ° C: 100 ml vaccine takes 120 minutes;

Environment 20 ° C: 20 ml of vaccine takes 60 minutes.

Remember: any vaccine should be warmed all year round

The above is the method and precautions for the pig farm vaccine to be reorganized for everyone. The pig farmers who need it can make a good reference. For more agricultural technology expertise, please continue to pay attention to Huinong.com and mobile farmers!

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