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How to choose and use self-paid vaccines for pig farming
Immunization is one of the most effective and key measures for the prevention and control of pig diseases. At present, there are two types of vaccines for pigs in my country. One is the free vaccine Sugar baby, and the other is the self-paid vaccine.
Free vaccines are free and must-have vaccines provided by the state, including foot-and-mouth disease vaccine, swine fever vaccine and highly pathogenic pig blue ear disease vaccine. The main characteristics of free vaccines are long service life and good immunity. They are generally developed and produced by my country and are cheap. The country issues specific guidance every year on the selection and use of this type of vaccine.
The self-paid vaccine is a voluntary vaccination of pig farmers at their own expense and voluntarily. Viral vaccines include pig pseudorabies vaccine, circovirus disease vaccine, swine parvovirus disease vaccine, viral diarrhea vaccine, and Japanese B encephalitis vaccine; bacterial vaccines include pig infectious pleuropneumonia vaccine, pig Escherichia coli disease vaccine, pig asthma vaccine, parasacre haemophilia vaccine, swine streptococcal disease vaccine, pig pulmonary vaccine, pig erysipelas vaccine, pig paratyphoid vaccine, piglet paratyphoid vaccine, etc. The characteristics of self-paid vaccines are good immunity and have small side effects. Some vaccines are imported from abroad and have excellent production technology, but they are shorter in use and are more expensive. At present, the country has no clear guidance on the selection and use of self-funded vaccines. So, how to scientifically select and use self-funded vaccines?
1. Choice of self-paid vaccines
The self-paid vaccines should be selected in a targeted manner based on the region and the epidemic situation of this infectious disease. It is better to have less than more. Vaccines for viral diseases such as pig pseudorabies, pig circovirus disease, pig B encephalitis, and pig parvoviral disease can be preferred, but vaccines for bacterial diseases such as pig pulmonary disease, pig erysipelas, pig paratyphoid fever, and streptococci disease should only be considered after the disease occurs in the region or in this site. In addition, choose the same serotype as the local epidemic pathogenvaccine. Many pathogens have multiple serotypes or genotypes (for example, there are 13 serotypes in pig pleural pneumonia, 2 serotypes in biological type I, 2 serotypes in biological type II, more than 15 serotypes in pig parahemophilus paraphilia, and more than 100 serotypes in E. coli). The vaccine is incorrect, and no matter how much immunization is, it cannot make the pig herd produce uniform and effective antibodies and cannot resist the attack of the disease.
The types of self-paid vaccines mainly include live attenuated vaccines, inactivated vaccines, gene deletion vaccines, multivalent vaccines, combined vaccines, etc. At present, the self-paid vaccines are widely used and have good results. The main self-paid vaccines are: porcine pseudorbies virus gE gene deletion vaccine, porcine Circovirus type II inactivated vaccine, porcine infectious gastroenteritis and swine epidemic diarrhea, porcine inactivated vaccine, porcine parvovirus disease inactivated vaccine, Japanese B encephalitis live vaccine, porcine E. coli genetically engineered tetravalent inactivated vaccine, porcine E. coli genetically engineered trivalent inactivated vaccine, porcine E. coli genetically engineered bivalent inactivated vaccine, porcine Haemophilic B ejaculation oil emulsion inactivated vaccine, porcine asthma disease inactivated vaccine, porcine inactivated vaccine, porcine inactivated vaccine, porcine inactivated vaccine, porcine septic streptococcosis live vaccine, and streptococcal multivalent inactivated vaccine.
Inactivated vaccines are best for negative epidemic monitoring fields, live vaccines are best for positive epidemic monitoring fields, and controversial live vaccines are best for positive epidemic monitoring fields. For a certain disease, the pig farm can only use one live vaccine from a certain manufacturer, and avoid using two or more live vaccines from two or more manufacturers. Different manufacturers cannot use seedlings with gene deletion in the same pig farm. Use feed to operate the vaccine for free. It is not necessary to produce or import vaccines of unknown origin, such as illegal production or illegal import, and it is strictly prohibited to use vaccines without approval numbers.
Pinay escort2. Use of self-paid vaccines
Before the storage and use of vaccines, you must carefully read the instructions Escort, and master the characteristics, uses, bottle amount, diluent, use dosage, vaccination method, precautions, etc. of the vaccine. Live vaccines should be transported and stored in freezing, and inactivated vaccines must be stored at 2 to 8℃, and should not be frozen.
When using a certain vaccine for the first time, a certain number of pigs should be selected for a small-scale trial, and observed for 3 to 5 days. If there are no obvious side effects or there are definite effects, the whole group will be vaccinated.
Before vaccination, ensure that the pigs are healthy and the vaccine is qualified. Immunized pigs must be healthy and disease-free. Pigs with fever, illness (including recovery period), excessive weight loss, lack of appetite and newly castrated pigs should not be vaccinated, otherwise it will aggravate the condition or cause death. To ensure that the vaccine is qualified, it is not stored as required, expired, without labels, cracks in the vaccine bottle, loose plugs, disgusting vacuum (not automatically absorbing water when diluting the vaccine), or with Escort layers will be prohibited.
When using the vaccine Sugar daddy, immunization operations must be standardized. ① Choose the vaccination method and location. Vaccination can usually be done subcutaneously or intramuscularly. The subcutaneous injection site is subcutaneously at the connection between the ear and the head, and a shorter needle is used (15-20 mm); during intramuscular injection, deep inoculation of the posterior muscles of the ear root, and needles of different lengths are selected according to the weight of the pig (15 mm for piglets and 40 mm for sows). However, it should be noted that the live vaccine or inactivated vaccine for infectious gastroenteritis and epidemic diarrhea of pigs must be injected at Houhai point. The injection depth of 3 days is 0.5 cm for piglets in age and 4 cm for adult pigs. Intramuscular injection is ineffective; the live vaccine for pseudorabies gene deletion is used to vaccinate piglets with nose drops, which has better immunity. ② Do a good job in immunization. Rinse the syringe and needle one by one and boil and disinfect for 10 minutes. It cannot be treated with chemical disinfectants, otherwise the remaining disinfectant will inactivate the attenuated seedlings. When drawing vaccines, you can insert a sterilized needle into the bottle stopper and not pull it out. Align the needle to the syringe and draw the medicine directly. You must never use the needle that has been injected into the pig to absorb the vaccine to prevent contamination and infection of the entire bottle of vaccine. After the vaccine is diluted, 4 hours below 15°C, 2 hours at 15 to 25°C, 2 hours at 25°C, 25°CSugar daddyThe above one hour must be used up.
A few points should be paid attention to during the use of the vaccine: First, avoid the impact between vaccines. The use of two viral live vaccines should be 7 to 10 days apart to reduce mutual interference. Second, the dose of vaccines cannot be increased casually. In addition to aggravating stress, large doses of vaccines also interfere with the normal immune function of pigs, resulting in immune resistance and paralysis, and temporary or persistent immunity of the body. Baby‘s disordered response will not only not produce immune memory, but also have great risks. Especially when the vaccine is not of high quality or the attenuated vaccine is used, it can directly lead to the disease. Third, antibiotics and antiviral drugs are prohibited. Sugar daddy should not be fed or injected within 1 week before immunization to 10 days after immunization. Within 1 week after injecting the attenuated vaccine, Manila should be fed or injected. escortNo antiviral drugs, nor can antisera be used at the same time. Try not to use antibiotics or antiviral drugs for the onset of the disease during the immunization period. If you have to use it, you will be exempted 15 days after the disease recovers. Fourth, avoid stress. Strong stimulation operations should be avoided as much as possible for several days before and after vaccination, such as blood collection and castration. Do not receive vaccination during stages that are prone to stress such as weaning and transfer. Fifth, feeding management should be strengthened after immunization. After pigs are immunized, supply of protein, energy, vitamins and trace elements should be ensured. daddy gives to reduce various stresses and do not feed contaminated by mycotoxins. Sixth, do not artificially disperse poison. Live vaccines should be careful to prevent the spread of viruses and live bacteria when operating. Used instruments and needles should be disinfected in time. Used vaccine bottles and unused vaccines should be processed at high temperatures and buried deep. Seventh, treat vaccine allergic reactions in a timely and correctly. After vaccination, especially within 5 TC:sugarphili200