在湖北酒店晚上怎么叫服务

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Lik gi-19, Harbin Veterinary ldt3-a strain of the new live vaccine on the market!

  • Classification: Company news
  • Author:
  • Source: Xinmu.com
  • Release time: 2020-01-19 11:13
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[brief description]在湖北酒店晚上怎么叫服务

Lik gi-19, Harbin Veterinary ldt3-a strain of the new live vaccine on the market!

[brief description]在湖北酒店晚上怎么叫服务

  • Classification: Company news
  • Author:
  • Source: Xinmu.com
  • Release time: 2020-01-19 11:13
  • Visits:
details

Autumn and winter season is often a high incidence period of infectious bronchitis in China, infectious bronchitis virus genotype is very many, to infectious bronchitis prevention and control caused great difficulties, to the chicken industry caused huge economic losses, how to effectively prevent and control it? On January 15, 2020, Harbin Weike Biotechnology Co., Ltd. (hereinafter referred to as "haavico") launched the live vaccine of Newcastle disease and infectious bronchitis (LA SOTA strain + ldt3-a strain) in Zhengzhou, which can effectively protect gi-19 and other genotypes, and the immune duration can reach 4 months, which provides an important choice for the prevention and control of infectious bronchitis in China.


Launch ceremony of new live vaccine of ldt3-a strain


Feng Li, deputy director of Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, said Harbin Veterinary Research Institute has always made positive contributions to the prevention and control of animal diseases in China. In recent years, it has made outstanding scientific and technological contributions in the research and prevention and control of avian influenza, played a key role in the scientific and technological research on the prevention and control of SARS, played an important scientific and technological support role in the prevention and control of porcine "blue ear disease" and piglet viral diarrhea, and played a major role in the scientific and technological research on the prevention and control of African swine fever. As a science and technology transformation enterprise of Harbin Animal Research Institute, Harbin animal science and Technology Co., Ltd. will launch more products in the future to serve the healthy development of China's livestock and poultry industry.


Feng Li, deputy director of Harbin Veterinary Institute, Chinese Academy of Agricultural Sciences


Gi-19 is the main infectious bronchitis virus in China
Infectious bronchitis virus infection incidence is very high, infectious very fast, once the infection of chickens spread quickly to the whole group, it can cause the death of chickens, and seriously affect the laying rate and egg quality. Infection during laying period can directly lead to the decline of egg production rate. Even if the recovered chicken flock, there will be different proportion of "false hens", which will cause huge economic losses to the chicken industry.
Liu Shengwang, deputy director of Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, said that under normal circumstances, the inactivated vaccine of infectious bronchitis is only vaccinated once before laying eggs, and the key to the prevention and control of the disease is the immunization of live vaccine. However, there is no absolutely safe and absolutely effective live vaccine in the world. To develop a good live vaccine is to find a balance between relative safety and effectiveness. To make a live vaccine of infectious bronchitis, we should first choose a good parent virus. In principle, the stronger the pathogenicity of the virus, the better the immunogenicity. However, it should not cause "false hens", but also "match type" with regional epidemic virus.


Liu Shengwang, deputy director of Harbin Veterinary Institute, Chinese Academy of Agricultural Sciences


At present, there are many infectious bronchitis virus types in China. At present, there are at least 3 genotypes and 15 pedigrees. Therefore, the single vaccine is not effective. However, gi-19 (QX, LX4, China type I) is the main epidemic strain in China. Although the mass vaccine strain H120 is widely used in China, it can not provide complete protection for the currently prevalent gi-19 strain in China, resulting in frequent infectious bronchitis virus infection in immunized chickens in China.
Liu Shengwang introduced that the parent virus of ldt3-a vaccine has a high mortality rate to SPF chickens (the incidence rate is 100%, the mortality rate is about 80%), and the pathogenicity is very strong. Another characteristic is that the infected chickens showed renal lesions, but the recovered chickens did not have the pathological changes of "false hens". It was found that it had good safety, high immunogenicity and good stability.


Meeting site


The immune duration of ldt3-a was 4 months
Red and blue guards are working for "birds", and prevention and control of infectious bronchitis starts from "zero". Wang Lujun, technical service director of Harbin Veterinary Medical Science Co., Ltd., said that Harbin Veterinary Medicine has always paid attention to the epidemic situation of epidemic disease prevention and control in China and developed new products. The Newcastle disease and infectious bronchitis dual live vaccine (LA SOTA strain + ldt3-a strain) is a new product for infectious bronchitis prevention and control launched by Harbin Veterinary Medicine. It is a new vaccine developed by using the first chicken infectious bronchitis vaccine strain ldt3-a and Newcastle disease vaccine strain with independent intellectual property rights in China.
According to reports, the ldt3-a vaccine strain in the combined vaccine is based on the molecular epidemiology of infectious bronchitis virus in China, and is a vaccine strain for the serotype of infectious bronchitis virus prevalent in China. It not only has excellent protection rate to gi-19 type, but also has good cross protection to gi-22 and gi-28 infectious bronchitis. The immune duration reaches 4 months.


Compared with H120 vaccine, the chickens fed with ldt3-a strain had good immune protection against Newcastle disease and infectious bronchitis The immune protection against Newcastle disease and infectious bronchitis could be obtained within days.
It is recommended that the new vaccine should be given by nasal drip (about 30-20 days of age) and nasal spray (about 30-20 days) of oral immunization (about 30-20 days of age) and nasal spray (about 3-20 days) of oral spray of LDA vaccine.


Liu Changjun, researcher of Harbin Veterinary Research Institute, introduced the current research progress of chicken Marek's disease live vaccine (rmdv-ms - △ mEq strain),
The vaccine will be available in the near future.


Wang Lujun, technical service director of Harbin Veterinary Medical Science Co., Ltd., introduced the prevention and control points of avian influenza and the upcoming avian influenza related
Triple vaccine and quadruple vaccine.



 

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