N.A. PATILSHARANAGOUDA.B.M2023-11-232023-11-232015-06-01https://krishikosh.egranth.ac.in/handle/1/5810201764Totally 370 serum samples from the four districts of North-Eastern region of Karnataka were screened for IBR seroprevalence viz., Vijaypura, Bidar, Kalaburgi and Yadgir districts using ELISA kit .Overall prevalence of IBR in this region irrespective of farming system was found to be 36.49%.In buffaloes less than five years of age overall prevalence was found to be 8.92% and it was 27.57% in buffaloes more than five years age. Among the buffaloes having the history of abortion overall prevalence was found to be 9.19%. District-wise seroprevalence was highest in Bidar district (51.09%) followed by Kalaburgi (43.48%),Vijaypura (35.87%) and lowest in Yadgir district (15.96%). Among the different farming sector higher prevalence was found in organized farming sector. Between the districts the prevalence of IBR was highest in Bidar district organized sector compared to other districts. Among the unorganized sector highest seroprevalence was in Kalaburgi district. No significant difference of seroprevalence of IBR was seen among less than five years age buffaloes in different districts but lowest seroprevalence was in Yadgir district. Seroprevalence of IBR in more than five years age was more compared to less than five years age group. Highest prevalence of IBR in more than five years age group was seen in Bidar district. Prevalence of IBR in buffaloes with history of abortion was highest in Bidar district and no significant difference was seen in seroprevalence of IBR between districts. The higher prevalence of IBR in organized farming sector may be attributed to poor managemental practices observed in this region during the study.EnglishThesis