Dr.ir.J.R. van Herwijnen

Dear Muhammad Hassan, You are right depending on the situation and feed used just vaccination is not enough to keep out bacterial diseases. Oral vaccine is depending on aim, broilers or layers given twice or three times, usually just a single time isn't enough for layers . In broilers sometimes it is, however it's improvement is increased if you use during a small time frame probiotics to improve ...

We already tested many multivalant serotype vaccines in broilers and pigeons, best challange protection is obtained by oral vaccines using potent adjuvants based on ISCOM technologyThese vaccines induce protective IgA and GALT and MALT response and protect 12-16 month depending on salmonella pressure.If this is used together just before immune gap with probiotics 7-8 strains specially isolated fro ...

Amine Mernizi Dear alle,If you use plates coated with antigen It depends alle about the purify of the antigen this van be native purified virus OR recombinant. Native purified inactivated virus might still haber cell antigenen which can Puck up antibodies finally inducing false positives. Otherside if you use recombinant antigens you can mis positive since glycolysation might be different OR nog p ...