Prevalence of Subclinical Caprine Mastitis in Bangladesh Based on Parallel Interpretation of Three Screening Tests

The present study was conducted to determine the point prevalence of subclinical caprine mastitis based on parallel interpretation of results of three screening test. A total of 462 milk samples from 231 lactating Black Bengal goats comprises of three organized goat farms in Bangladesh were collected and were screened for subclinical mastitis using California Mastitis Test (CMT), White Side Test (WST) and Surf Field Mastitis Test (SFMT) simultaneously. Integrated test results yield the prevalence of caprine subclinical mastitis as 44.59% (95% Confidence Interval of 40.12-49.15%) based on “the OR rule” and 40.48% (95% Confidence Interval of 36.10-45.01%) based on “the AND rule” of parallel interpretation. Animal level and udder half level prevalence of subclinical caprine mastitis were 39.83, 38.96, 38.10% and 35.05, 34.85, 31.60% by CMT, WST and SFMT, respectively noticed when tests were interpreted individually. CMT in combination with one or two other indirect low cost indirect tests can be recommended for screening of caprine mastitis in field condition with “the OR rule” of parallel interpretation.