Vaccination for pigs, do you know these details?

Pig Disease Tong platform (WeChat zbt120) often receives reports from some pig friends that just after vaccination, pigs have a fever, a decrease in feed intake, and serious deaths, and that it is a problem of vaccine quality. in fact, the health status of pigs and the methods of immunization play a vital role in the immune effect of the vaccine. how to produce a good immune effect through scientific immunization? The veterinary doctor of Pig Disease Tong discussed and studied with you some details of vaccine vaccination.

1. Vaccine products must be preserved according to the instructions. Generally, the preservation temperature of live vaccine is-15 ℃, and that of inactivated vaccine is 0-8 ℃. The duration of validity varies with the preservation temperature of vaccine. Oil and water seedlings cannot be used if they are frozen. The correct preservation method of the vaccine can ensure that the titer of the vaccine will not be reduced and reduce the occurrence of vaccine immune failure or allergic reaction.

2. Before vaccinating pigs, the health status of immunized pigs should be checked. If the pigs are sick, in the disease incubation period or in a state of sub-health, they cannot be vaccinated, and symptoms may occur after vaccination. Veterinary surgeons of Pig Disease Tong suggest that pigs must be in a healthy state to be immunized. In some special cases, such as the emergency vaccination of classical swine fever vaccine.

3. Do not vaccinate immediately when the vaccine is taken out of the refrigerator. It can only be used after the vaccine is restored to normal temperature. Because the low temperature vaccine is injected into pigs to stimulate local pain and increase the stress response of the vaccine to the body, serious pig pain shock will occur.

4. before the vaccine is diluted, it depends on whether it is a vacuum vaccine or an expired vaccine. The veterinary doctor of Pig Disease Tong suggests that the diluted vaccine should be used up within 1 hour because of the high temperature in summer. Therefore, the vaccine should be diluted in batches according to the size and speed of the immunized pigs, so as not to affect the immune effect of the vaccine.

5. the appropriate needle should be selected according to the individual size of pigs, such as 9 × 15 mm needle for suckling piglets in delivery room, 12 × 20 mm needle for piglets in early nursing house, 12 × 25 mm needle for piglets in late nursing house, 16 × 25 mm needle for middle pigs, 16 × 38 mm needles for meat pigs, breeding pigs before and after breeding, boars and sows, etc. Veterinary surgeons of Pig Disease Tong suggest that if there are conditions for pig farms, try to have one stitch per pig.

6. How to use the vaccine. The utensils and injection sites should be strictly disinfected during injection. Some vaccines require deep cervical intramuscular injection, so you need to choose a needle of appropriate length to inject the vaccine into the deep muscle layer, so as to avoid the shallow injection of the vaccine, causing swelling at the injection site, which is not conducive to vaccine absorption. Cause the immune effect of the vaccine to decline or fail. Vaccine intranasal dripping, it is necessary to grasp the appropriate amount of diluent and increase the residence time of the vaccine in the nasal cavity. Missed immunity is also one of the important causes of immune failure.

7. Before vaccination, a variety of vitamins, electrolytes and astragalus polysaccharides can be added to pig feed or drinking water, which can reduce the immune stress response and improve the immune effect of the vaccine. The use of antiviral drugs is prohibited for 3 days before and after viral vaccination, and the use of antibiotics is prohibited for 5 days before and after bacterial vaccination. The use of the two live viral vaccines should be about a week apart, and the inactivated viral vaccine and the live viral vaccine can be used separately at the same time.

8. After vaccination, utensils and empty vaccine bottles should not be thrown at will. Avoid the occurrence of vaccine virulence and bring potential epidemic infection pressure to pig farms. About half an hour after vaccination, some pigs showed elevated body temperature, decreased food intake, shortness of breath, flushing or pallor all over the body, and generally relieved symptoms with rice or epinephrine.

Pig raising and controlling the occurrence of infectious diseases is the top priority for pig producers. Doing a good job of vaccine immunization is the foundation, mastering scientific vaccine operation methods, formulating immunization procedures suitable for their own pig farms, and regularly doing a good job of vaccine vaccination. it can get twice the result with half the effort for healthy pig raising.

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