Investigaţiile se bazează pe determinarea influenţei variaţiei microflorei intestinale asupra nivelului titrelor de anticorpi postvaccinali împotriva bolii Newcastle. Astfel, mai multe loturi de pui au fost supuse vaccinării, ...

The article includes the investigation results on the modification in cloacae bursa index after the vaccination against infectious bursitis of chicken with intermediary strains of vaccines. It was established that the index ...