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JiangXi ChuangXin Pharmaceutical
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| Current situation and Countermeasures of blue ear disease in large-scale pig farm Add Time：2012.08.23 Views：625 |
| At present more and more complex diseases, showing a sickly, a sickly, a sickly, shed a pig sick status. Blue ear disease is the main culprit of high fever, leading to miscarriage, stillbirth, infertility, and respiratory symptoms in piglets. In addition to causing immunosuppression, resulting in immunization effect is poor, the pig body resistance drops, the mixed infection of hog cholera virus, pseudorabies, Streptococcus, Eperythrozoon, breathing disease, lung disease, infectious pleuropneumonia, influenza and toxoplasmosis etc., cause a large number of deaths, has brought great economic losses to farmers. 1. Classic blue ears and highly pathogenic blue ears The classical blue ear is usually caused by SDSU73, VR2385, VR2332 and other weak virulence and toxic PRRSV strains. Symptoms include sow abortion, low birth weight, stillbirth, and mummified foetus. The symptoms of pneumonia such as fever and dyspnea in piglets, growing pigs, and so on. Highly pathogenic blue ear is generally caused by highly pathogenic NVDC-JXA1 such as MN184 and PRRSV. The main features are: Pig heat up 41 degrees centigrade, anorexia or food, conjunctivitis, serious reproductive abortion rate is as high as 50%, stillbirth, serious respiratory symptoms such as cough, asthma, nervous symptoms such as weakness, can not stand the hindquarters, swaying, twitch, high mortality. Piglets as high as 50%, 3% - 15% sows. Two, prevention and control of blue ear disease Countermeasures 1, strengthen feeding management: The blue ear virus is unstable in the environment, sensitive to heat, acid, and base, and particularly sensitive to dryness. Housing and transportation clean, cleaning, disinfection and drying contribute to the inactivation of blue ear virus. In the daily management of pig farm, it is necessary to strengthen disinfection and drying measures. 2 、 reasonable and effective immunization program: Studies have shown that: at the same time in the same Classic Swine blue ear virus and highly pathogenic blue ear virus, one of them will gradually occupy the dominant position, to become the only breeding strains, while the strain is eventually disappeared, and the difference between the two strains is bigger, between the two incompatible degree is more high. Therefore, the choice of PRRS vaccine should be based on the incidence of this field and the surrounding field. 3 regular antibody monitoring: For stable production, the blue ear antibody negative field can not be immunized by the blue ear vaccine. But in the current swine blue ear frequency of the environment, this is very dangerous. If the original pig farm is under the premise of adequate biological safety measures, it can not help but need to be monitored regularly, so as to keep an eye on the possibility of swine infection. If the biological safety measures in the pig farm can not be effectively protected, we recommend immunization with the blue ear inactivated vaccine. For producing stable blue ear positive fields, antibody tests should be carried out on species of pigs. The detection results of PRRS antibody levels is high and consistent, can not do good immunity, bio security measures, monitoring herd health regular detection; the detection results of PRRS antibody level is low and consistent, is the best time for vaccination, need immediate full immunization of blue ear attenuated vaccine of PRRS antibody level detection results; the level of inconsistency, it is vulnerable to danger, pig is facing the risk of infection, the whole group to immediately fill free PRRS attenuated vaccine, and a second immunization in 15 days. 3, targeted drug use: Two aspects should be considered in the treatment of PRRS: antiviral and prevention of secondary infection. Shuanghuanglian extract powder, purging fire, detoxification, cooling blood. It has obvious curative effect against blue ear virus, cough and asthma, panting and so on. When taking, take this product to the water, 250kg concentrated once drinking, continuous use of a course of treatment, the effect is remarkable. It has a good curative effect on secondary infection and complications caused by the virus of Qi, poison, pestilence, resisting blue ear and round ring. It has been used continuously for 5 days. |
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