Pig breeders must know about pig vaccines!
In the process of raising pigs, there will always be a variety of infectious diseases. Once the delay in treatment can lead to the death of a large group of pigs, it will cause irreparable economic losses to the farmers. The best way to get a high mortality rate is to immunize the herd. Therefore, pig farmers need to learn and understand the characteristics of various infectious diseases and vaccine knowledge, so as to develop an immunization program suitable for the farm, which can not only raise pigs but also save money!  1. Inactivated vaccine (dead vaccine) Inactivated vaccines are prepared by inoculating isolated cultured pathogenic microorganisms (mostly virulent strains) with appropriate chemical agents but retaining their immunogenicity and mixing them with different adjuvants. The advantages are easy preparation, low cost, high stability and strong safety, so there is no danger of toxic and strong poisoning; inactivated vaccines are easy to store and store only need to be refrigerated; most vaccines are immune to maternal sources Antibody levels and antibiotic interference are small. The disadvantage is that it can not be propagated in the animal after inoculation, the dose of inoculation is large, the antibody is produced slowly, the duration of induction of immunization is short, and multiple immunizations are required; after the inoculation, the adverse reactions are many and stress is easy. 2. Attenuated live vaccine (live vaccine) Attenuated live vaccines can be divided into bacterial live vaccines, live virus vaccines, and live vaccines of Mycoplasma hyopneumonia according to the different vaccine strains. There is no live vaccine for pig parasites. The advantage is that the immunization pathway is diverse, and can be immunized by intramuscular injection, nasal drops, oral administration, etc.; high activity and high dose can produce strong immunity; less inoculation times, faster antibody production, longer duration of immunity; activation of humoral immunity and cells Immunization, the immune effect is indeed. The disadvantage is that there is a risk of toxic and resilience, and the transportation and storage conditions are relatively high, which is susceptible to interference from maternal antibodies and drugs. 3. Genetic engineering vaccine Genetically engineered vaccines are currently available for use in gene-deficient vaccines and synthetic peptide vaccines. A gene-deficient vaccine is a vaccine made by genetically engineering a modified, mutated or deleted pathogenic microbial pathogenic gene to obtain an attenuated strain. The vaccine is stable in virulence, has a small probability of re-mutation, and has a good immune effect, such as a pseudorabies gene deletion vaccine. A synthetic peptide vaccine is a small peptide containing only immunological determinant components, that is, a vaccine prepared by artificially synthesizing a protective short peptide in the amino acid sequence of a natural protein, and is linked to a carrier and then adjuvanted, such as a porcine foot-and-mouth disease synthetic peptide vaccine. 4, multivalent vaccine and multiple vaccine Multivalent vaccine refers to a vaccine made by using different serotypes or subtypes of the same virus or bacteria. The advantage is that the animals with multi-serotype microorganisms can obtain more comprehensive protection and are suitable for use in different regions. For example, porcine infectious pleuropneumonia multivalent serum inactivated vaccine belongs to this category. A multi-vaccine is a vaccine made by combining two or more viruses or bacteria. This vaccine can prevent two or more different animal diseases at the same time, such as swine fever, pig erysipelas, and Pasteurella porcine. Triple live vaccine. Some farmers have blindly followed suit when choosing vaccines because they lack understanding of the characteristics of infectious diseases and related vaccine knowledge. In fact, we want to save the minimum cost of breeding and achieve the best immune effect. Farmers can only make immunization plans according to the situation of their own farms! Fire Fighting Equipment, DONGGUAN TENYU TECH.INC , https://www.tenyutech.com
