Efficacy evaluation of Razi Institute Fowl pox vaccine in laying hen pullet

The most effective way to prevent fowl pox disease is to vaccinate and the aim of this study was to determine the immunity level of fowl pox vaccine and also to determine the efficacy of the vaccine against the pathogenic agent, which seems necessary and important to do so. The experiments of this study are summarized in two sections. The first stage includes the vaccination of the experienced chicks in the farm and the evaluation of the effect of the vaccine on the farm, and the second phase included a challenge test carried out in the vaccinated pullets. In order to realize this, fowl pox vaccine of the Razi Institute, which is live attenuated, was inoculated into a curtain under the wing in a layer flock with sixty thousands of Bowans strain laying hen farm was used for testing. Seven to ten days after vaccination, the immune response of the herd was investigated in 10% of the layer flock was taken and the percentage was 96.7%. Then, in order to the challenge test, 30 of these pullets were divided into two separate halls, the first group consisting of vaccinated pullets and the second group that did not inoculate the vaccine. The pathogenic virus was inoculated to them and the control group showed all the symptoms of the disease, and all the birds in the control group had no symptoms. From the above experiments, it is concluded that fowl pox vaccine of the Razi Institute has suitable efficacy.