Dr. D. J. GhodasaraAashwina Madhwal2019-06-012019-06-012017http://krishikosh.egranth.ac.in/handle/1/5810106117The present research work was carried out on femoral head necrosis in broiler birds with special reference to pathogenic Escherichia coli. The study comprised post-mortem incidences, mortality pattern, gross and histopathological lesions along with bacteriological study including cultural isolation and antibiogram of E.coli. Isolated E.coli samples were sent to Central Research Institute, Kasauli, (H. P), for serotyping, and the molecular study comprised of DNA isolation from culturally isolated E.coli and detection of presence of virulence genes by PCR.en-USnullThesis