Despite the fact that whey against swine erysipelas was developed more than 100 years ago, modern breeders continue to frighten this ailment. To this day, due to this disease, pig farms suffer huge losses because they do not take all the necessary actions to protect animals. The virus is dangerous for pigs of all ages, so farmers need to properly use the drug and carry out preventive measures in order to prevent an epidemic and get a full profit.
The first steps towards creating a medicine
The first vaccine against swine erysipelas appeared in 1882. Its creator was the French microbiologist Louis Pasteur. The first sera were created by reducing the virulent qualities of the virus. This effect was achieved due to the fact that bacteria were carried out through the organism of rabbits - the method of passage.
In Russia, such a vaccine for pigs appeared only in 1899, thanks to the work of DF Konev. One year later, the drug was widely distributed among domestic farmers. But a few decades later, the virus mutated, and the drug lost its effectiveness.
V. P. Merkulov and A. B. Epstein were engaged in the modification of the Konev vaccine, and in 1960 they introduced a new strain to the country. But one drawback of the drug is preserved - the liquid form of release. Because of this, it was difficult to transport and store. In addition, the drug had a small shelf life.
Modern form of medicine
The above reasons were the impetus for the creation of a new strain. Thus, the use of a vaccine against swine erysipelas from strain BP-2 was developed and started. If the previous preparation was administered to pigs 2 times, then BP-2 needed only a single application. Such an approach made it possible not only to get an effective medicine, but also to reduce the cost of vaccination.
In 1976, the first dry vaccine against swine erysipelas BP-2 was born. The technology of the drug was developed by O. B. Dyakonov, L. A. Podlesnykh and V. V. Dotsenko. Thanks to the work of this team, a concentrated form appeared, convenient for storage and transportation.
Despite the above-mentioned advantages, after a while, it became obvious that the manufacture of the strain was unprofitable. So, in 1996 was born 2 live dry vaccine BP-2, improved and optimized. Currently, this variant of the drug is used in pig farms.
Vaccination methodology and drug principle
Modern serum against swine erysipelas works on the principle of stimulating the immunity of an animal to fight the virus. Timely use of the drug can completely prevent infection. But, in order for the drug to work fully, the instructions should be strictly followed.
Vaccination against swine erysipelas is placed in the area behind the ear and is carried out in three stages. The first time an injection is given to piglets at the age of 60-62 days. Re-vaccination is carried out after 30 days. The final injection put in 7 months. It is very important to strictly observe the specified intervals and not to interrupt the process.
If done correctly, the drug will contribute to the creation of immunity in pigs to the virus of erysipelas and classical plague. Thus, you protect animals from such an unpleasant disease and will be able to prevent an epidemic and financial crisis that arises in the event of a massive infection of livestock. Read more about the disease in the article "Treatment of erysipelas in a pig at home."
Composition, packaging and dosages of the finished drug
A vaccine against parvovirus infection and swine erysipelas is injected under the skin, therefore, for injection, you will need a bottle of diluted solution, not powder. In finished form, the serum has a light, yellow color with a slight red. The precipitate at the bottom of the ampoule will disappear if it is shaken.
The vaccine against swine erysipelas is packaged in glass ampoules and may vary in volume. You can purchase a container for 100 or 200 ml and enter at the rate of: one dose - 50 ml.
Such an ampoule is sealed with a rubber cap and an aluminum cap through which air does not pass, but the needle will easily pass.
The vaccine is made using the blood of healthy animals - pigs or cows that are immune to all three strains of the virus: 1329, 1689 and 1933. Since the original medicine is in powder form, it is diluted with 0.5% phenol solution.
Transportation, storage and disposal
Solutions with the finished serum are packed in a cardboard box, thereby ensuring their safety. Each ampoule is separated from the other by a partition so that the glass is not damaged during transport. For each such box is placed instructions indicating the dose and the algorithm of application.
Store and transport the finished solution should be in the dark and dry. The temperature should be maintained in the range of + 2 + 15 degrees. Shelf life should not exceed 2 years from the date of manufacture. If you keep the medicine at home, then make sure that children do not get to it.
The drug, whose shelf life is over, will not be effective against parvovirus mug, so it must be disposed of. Also subject to destruction are unmarked bottles, broken or cracked, which change the appearance. Special recommendations and precautions for disposal are not provided.
Work medications and recommendations for the elimination of livestock in unfavorable farms
Serum is effective not only in the treatment of erysipelas, but also during preventive procedures on the farm. The solution contains special antibodies that neutralize the pathogenic effect of the virus, which is effective in its treatment. But by injecting medicine to a healthy pig, you can develop immunity in her.
A drug developed to treat inflammation associated with the erysipelas virus in unfavorable farms over time began to be used to prevent it. To date, there are no contraindications to the use of the drug.
The advantage of serum is that the pigs carcass after the drug is injected can be used in full - the medicine does not affect the animal’s body and does not harm humans. If you have to dispose of dead pigs with signs of erysipelas, then this should be done according to the veterinary and sanitary rules: 13.7.1-99 p. 10.
For all boxes of drugs, indicating the content of serum against swine erysipelas, instructions are usually attached. But there are some points that are not mentioned in it. If it is easy to calculate the dosage according to such recommendations, then the application methodology should be learned:
- first, the drug is pricked together with penicillin-type antibiotics;
- secondly, repeated administration of serum is allowed after 8-12 hours, in the absence of the effect of the first injection;
- thirdly, the drug should be injected heated to a temperature of 36-38 degrees, not forgetting to shake the bottle when heated;
- fourth, the injection is made only after the vaccine injection site is treated with 70% alcohol solution.
Serum has no side effects or contraindications. In case of overdose, there are no pathological signs, but there is a possibility of an allergic reaction.
To piglets are not allergic to the drug, it is recommended to be administered in two doses. The interval between serum is 3-4 hours. If you notice allergic symptoms, the piglet should be given one of the antihistamine drugs: diphenhydramine, diprazine, diazolin, caffeine, atropine.
Dosages, their differences and safety
In the event of erysipelas and its prevention, the dosage of the drug will vary. The vaccine rates for both cases are shown in the table:
The table shows that the sow will require the largest dose of the drug. If you have a lot of adult pigs, then it is more expedient to purchase ampoules of 20 cubic meters each. cm.
When working with a vaccine, all employees must observe precautions and hygiene standards. Vaccination personnel should be in protective clothing that protects the skin and mucous membranes.
If the serum gets into your eyes, you should immediately wash them with copious amounts of clean water. If the drug is accidentally administered to a person, then the injection site is treated with any antiseptic and treated to the nearest hospital.
About how effective the serum BP-2, write in the comments to the article - this information will be really useful for beginner breeders.
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