Bacterial Etiologies of Subclinical Mastitis in Cows Jos Metropolis, Nigeria

Abstract This study was conducted to investigate the prevalence of subclinical mastitis and its contagious environmental bacterial causes in dairy cows Jos Metro polis Plateau State. A total 208 milk samples were collected aseptically from 52 lactating subjected California Mastitis Tests (CMT). Milk transferred into peptone water broth for enrichment, followed with bacteriological assays biochemical identification bacteria. Using R Commander version 3.6.2, data such as: breed, age, parity, lactation, management system collected, analysed determine their relationship bovine mastitis. Out quarter cows, 35.09 % showed While Cross-breed had 15 recorded, White Fulani 78.13 %. Cows age 3 5 years highest mastitis, while 4 6 calves parity category. The early lactation stage these prevalence. bacteria isolated where E. coli, K. pneumoniae, oxytoca, C. freundii, aerogenes, Proteus sp. coli having frequency 40.86 %, by Pneumoniae 17.79 S. aureus, agalactiae, Corynebacterium aureus occurring most 69.71 concluded that is high area. It also discovered breed cow, number, husbandry systems have an impact on frequency, indicated microbes more effect than microbes.