Injecting pigs with swine fever vaccine is a key link in preventing the occurrence of swine fever and improving the efficiency of raising pigs. In order to ensure the success of the vaccination, farmers should do “10 preventions†when they are injected with swine fever vaccine.
Prevent premature
Piglets should be given a swine fever vaccine between the ages of 40 days and 45 days, and should not be premature. Since maternal antibodies are obtained from maternal or colostrum after birth, they reach a peak at 24 hours after birth and gradually decrease until they disappear at 60 days. During this time, swine fever can be prevented. If the vaccine is injected prematurely, the maternal antibody will be destroyed and piglets will be susceptible to swine fever. Therefore, it is unscientific to inject a swine fever vaccine to a piglet who has just given birth for a few days. When the maternal antibody begins to disappear, it is scientific to inject a swine fever vaccine.
Second blind inoculation
Before immunizing pigs with immunization, farmers should first consult with local veterinarians to understand the local swine disease epidemic and the situation, and ask the veterinarian to formulate a reasonable immunization program so that immunization can be targeted.
Three anti-injection expired vaccines
Any vaccine has a certain period of validity. If it exceeds the validity period, it will lose its immunity. Expired vaccines are used as qualified products and will inevitably cause immune failure. Therefore, when pig farmers purchase vaccines, they should formulate a vaccine dosage plan based on the number of live pigs and the immunization period of the vaccine, and purchase vaccines from the regular livestock department. Do not purchase vaccines that have broken walls, unclear or undocumented failures, and vaccines that do not have the required preservation and expiration date. After the vaccine is purchased, it must be strictly performed according to the transport and storage conditions of the vaccine, otherwise it will easily lead to failure of the immunization. Diluted vaccine should be used as soon as possible to avoid the use of expired diluted vaccine. It is worth noting that in the past few years, the commonly used "piglet cell culture seedlings" diluted, if the temperature is below 15 °C, should be used within 6 hours; if the temperature is 15 °C ~ 27 °C, must be in 3 Run out in hours. If we continue to use the method used in the past to use the "pig rabbit attenuated vaccine", "the day after dilution is used up," it will inevitably cause immune failure.
Four anti-dose is not suitable
Before vaccinating pigs, they should be well shaken to make the precipitates evenly mixed. Take a close look at the bottle label and instructions for use, and strictly follow the required dose injection. Because the vaccine injection is too small, the antigen is not sufficient, and the preventive effect is not achieved. If too much, the vaccine response is caused.
Five Preventions Give Vaccination to Pregnant Pigs
Vaccination of pigs must be in good health, frail, disease, the pigs in the incubation period of the incubation period is temporarily not suitable for inoculation, such as the body returned to normal after inoculation. Because the health of pigs directly affects the success rate of immunization, when pigs have been infected with certain infectious diseases, immunization will not only fail to achieve the purpose of immunization, but will result in death or spread of the epidemic. Sows in late pregnancy should use caution or not respond to a stronger vaccine. Because the vaccine is a weak virus, it can cause miscarriage, premature birth or stillbirth in sows. For breeding sows, a vaccine should be given one month before breeding to prevent the miscarriage caused by the vaccination during the gestation period and increase the immunity of the piglets born. Inoculated pigs were banned from antibiotics and sulfonamides 7 days before and after, because these drugs had a killing effect on live bacterial vaccines and also had a certain degree of influence on viral vaccines.
Six Preventions Simultaneous Injection of Two or More Vaccines
Many pig farmers mistakenly believe that more and more pigs are given epidemic prevention needles. Often, they repeatedly inject multiple vaccines into one pig in a short period of time. Why is it wrong to do this? Because after the vaccine is injected into the pigs, it takes some time to produce antibodies. If two or more vaccines are injected at the same time, the vaccines will interfere with each other and affect the formation of antibodies, which not only affects the immune effect, but also make the pigs susceptible to swine fever. Therefore, when different vaccines are injected, they should be separated by about 10 days.
Seven injections are not strictly disinfected
Insufficiency in injecting vaccines will lead to the presence of virulence, which will inevitably lead to various diseases. Therefore, when the vaccine is injected, it must be fully prepared for disinfection. Needles, syringes, and tweezers must be disinfected and prepared in advance. The disinfection method for the above equipment is: After thorough cleaning with flowing clean water, add water to boil and sterilize for 10 minutes to 15 minutes. The water used should be soft water or cool boiled water, or put a piece of gauze in the boiling pot to absorb the precipitation material. Alcohol swabs must be prepared 48 hours before; no dilution of the vaccine is required, the sealing wax on the stopper is removed, and the stopper is disinfected with an alcohol swab; syringes and needles cannot be soaked, rinsed, or wipe-disinfected with any chemicals; Cotton needles are used to wrap needles; each injection of a pig requires a change of needles, and a cross-infection occurs when the needle is shared.
Eight anti-disinfectant drugs are not properly selected
For vaccination, 75% alcohol should be used as a local disinfection and the vaccine should be injected again when the alcohol is evaporated to dryness. Do not use 5% iodine for local disinfection. When sterilized with iodine, iodine contact with the vaccine can cause the vaccine to degenerate and lose immunity. When alcohol is wiped off, it is injected into the vaccine. Alcohol must be brought into the needle, affecting the effectiveness of the vaccine, reducing the effectiveness of the epidemic, and even causing immune failure.
Nine needles are not suitable for selection
Some pig farmers use short and thick 16-gauge needles to facilitate and prevent needle breaks. This is wrong. Because of injection with such a needle, the injected vaccine easily flows out with the needle, resulting in insufficient dosage. At the same time, the disinfectant can easily penetrate the needle hole with the needle to kill the vaccine. Therefore, to select the appropriate needle, the 12-gauge needle is generally selected. After the injection, if there is a clear liquid or blood flow at the injection site, make a supplement.
Ten hypoallergenic
In recent years, due to the increase in the type of vaccine used for swine and the increase in the number of immunizations, as well as changes in swine breeds and stress factors, the number of allergic reactions caused by vaccination has increased significantly. Therefore, the following anti-allergic measures should be taken for vaccination. First, epinephrine injection and special injection equipment should be prepared when the swine fever vaccine is injected. Second, before the large-area inoculation, a small number of pigs should be tested first. When using different manufacturers, different batches of swine fever vaccine, a small number of pigs should also be tested first, if there is no abnormality after 1 hour of vaccine injection. Only in order to conduct the full group vaccination. The third is to pay attention to the reaction of the pigs after the injection of the vaccine, especially within 30 seconds, and strive to achieve early detection and early rescue. The fourth is to avoid the hot and cold time period to reduce the reaction.
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