Three experiments with a total of 15 855 test birds and 20,081 controls were carried out to study the epizootiologic effectiveness of the immunoprophylaxis of Marek's disease using Deptavac-HVT vaccine under productional conditions.
Three experiments with a total of 15 855 test birds and 20,081 controls were carried out to study the epizootiologic effectiveness of the immunoprophylaxis of Marek's disease using Deptavac-HVT vaccine under productional conditions.