Prevalence of subclinical mastitis in cattle in and around Bikaner district of Rajasthan

Abstract

Lactating cows (n=100) were examined for subclinical mastitis (SCM) by California Mastitis Test (CMT) and cultural examination during the period from December, 2018 to December, 2019. On the basis of CMT; the prevalence of SCM was 42% and 24.50% on animal and quarter basis and on the basis of cultural examination; the prevalence was 51% and 29.75% on animal and quarter basis, respectively. Highest prevalence of SCM was observed in right hind quarter (45%) followed by left hind quarter (30%), right fore quarter (23%) and left fore quarter (21%). Maximum numbers of cows (72.22%) were affected with SCM in Vth parity, followed by 64.00, 63.63, 58.33, 31.57 and 13.33% in IVth, VIth, IIIrd, IInd and Ist parity, respectively.