Enriquillo Rivas

Daniel Mc ElroyI think persistence of H9N2 in vaccinated birds can be attributed to co-existence of antibodies and virus in the birds body depending upon antigenic match between the vaccine virus and field virus. A vaccine virus with >90% (genotype) homology with the virus circulating in the flock will have more efficient virus clearance than the viruses more distant (10 days vaccination thus e ...

The field results of this article are good and beneficial. It is expected to have a nonconstant air speed at the level of grown broiler or floor level, because of the total body volume covering the whole floor area. This works as a movable obestical which results in varying air speed. But the good thing about the article is quantifying this phenomenon in tunnel poultry house. My question: how much ...