What about pig vaccine allergy?

Vaccination of pigs is a very important part of the process of raising pigs. They are very good at preventing some common pig diseases. But many farmers have found that pigs develop allergic reactions after vaccination, so what causes this? What kind of symptoms appear after the injection is allergic to it? So what do we do when we have allergies? Let's read the following together with Xiaobian.

1. Causes of allergy

There are four main reasons why pigs are allergic to vaccines. The first is that the vaccine contains xenogeneic proteins, or the vaccine itself is extracted from other specific cells after reproduction, but due to improper handling, it causes allergies after injection. The second is that vaccine adjuvants are an important factor in inducing allergic reactions in pigs. Mineral oil and other components of immune adjuvants can cause a series of allergic reactions. There are also physical differences in pigs themselves, different breeding methods, breeding environment and other breeding pigs, their allergic reaction to the vaccine is different. Finally, it may be that the vaccine injected during pregnancy of sows may affect piglets, which develop immune allergy after birth, which is also an allergic reaction.

2. Symptoms

Different degrees and different causes of allergic reactions it presents symptoms are also different. Generally speaking, mild allergy, it mainly will appear appetite loss, poor spirit and other phenomena; and acute allergy in about 15 minutes after the injection of the vaccine will appear asthma, respiratory acceleration, foaming at the mouth, standing instability, body convulsions, or skin redness, measles, etc.; anaphylaxis its reaction speed is the fastest, generally in the injection after withdrawal or a few minutes later fell to the ground shock. Among them, the most important symptoms are high temperature fever, poor breathing, foaming at the mouth, falling to the ground, serious shock, death.

3. Treatment

Well, when pigs have allergic reactions after vaccination, we have to take timely treatment measures, otherwise the losses will be heavy. Generally speaking, adrenaline hydrochloride can be injected immediately into allergic pigs at a dose of 1~2mL per pig; followed by intramuscular injection with 1% atropine sulfate, 3mL for large pigs and 1mL for piglets; if allergic fever occurs, we need to inject penicillin plus an appropriate amount of compound aminopyrine; if appetite loss occurs, vitamin immunopotentiators can be used; Finally, stress can also exacerbate allergic reactions, so we need to keep the farming environment quiet and reduce stress reactions.

4. Precautions

Since there is a chance of allergic reactions when vaccinating pigs, we should be prepared to prevent allergies before vaccinating them. Secondly, if it is allergic constitution or allergic reaction occurs when injecting vaccine before, we can inject renal hormone in advance, so as to prevent allergy. There is also a live vaccine, we should choose a drug with low allergic reaction, and carefully read the instructions when injecting the vaccine. Finally, there is the choice of pig breeds, preferably pure lineages, which have a lower allergic reaction to avoid and a lower incidence of disease.

The above is all the content that Xiaobian wants to share with you today. I believe you have a general understanding of the causes, symptoms, treatment methods and precautions before and after injection of live pigs. I hope it can help you.