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Harbin Veterinary Research Institute Director Step Zhi gao introduced, in the environmental release trial stage, the vaccine at 10 times and 100 times the dose of immunization to inoculated commodity fattening piglets, sows, continuous observation for 20 weeks, inoculated pigs were not significantly elevated body temperature and other clinical abnormal symptoms and pathological damage.
" commodity fattening piglets after vaccination growth and development is good, no vaccine virus emissions and horizontal transmission phenomenon.
sow normal hair, breeding, no abortion occurred, pregnant sow after vaccination no abortion occurred, are normal delivery, no vertical transmission was observed, the production of piglets growth and development is good.
, " said Mr. Stepo.
Tang Huajun, president of the Chinese Academy of Agricultural Sciences, said that with the approval of the Ministry of Agriculture and Rural Affairs, the company conducted clinical trials of vaccines at three bases in Heilongjiang, Henan and Xinjiang in early April, early May and early June, with a total of nearly 3,000 commercial fattening pigs.
" Up to now, the growth status of immune pigs is good, there are no obvious adverse clinical reactions, immune pig caesarean section has no obvious pathological changes, no vaccine toxic discharge, no horizontal transmission, immune pigs in high-grade biosecurity laboratory with strong poison, different doses of immunization group immunization protection rate is more than 80%.
," Tang huajun said.
It is learned that the next step, the Chinese Academy of Agricultural Sciences will continue to work in accordance with the Ministry of Agriculture and Rural Affairs deployment, accelerate the promotion of vaccine production trial research, in Heilongjiang and other places to further expand the scope of clinical trials, and strive to complete the relevant trials at an early date, in accordance with the legal procedures into the safety certificate declaration and vaccine registration process.
.
