Prevalence, Current Antibiogram and Risk Factors Associated with Mastitis in Dairy Goats in Punjab

The present study was intended to estimate the prevalence of subclinical mastitis (SCM) in apparently healthy dairy goats, to carry out culture sensitivity of isolated pathogens and to elucidate the associated risk factors of mastitis. A total of 200 goats comprising of 397 udder halves from 10 flocks of Punjab was carried out. Milk samples from were collected and screened for California Mastitis Test (CMT), bacteriological examination, and culture sensitivity pattern of the isolated organism. The potential risk factors associated with the occurrence of SCM were analysed using multiple regression and univariable logistic regression analysis. Prevalence of SCM at goat level was 55.5%, and at udder half level it was 46.0%. There was found no significant (p>0.05) difference on the occurrence of SCM between left and right udder halves. Coagulase negative staphylococci were the chief pathogens (75.65%) isolated from infected udder halves. Tetracycline was found to be the most effective drug and penicillin the least. Multiple regression showed that risk factors such as age, parity, milk yield, days in milk and season added significantly (p < 0.001) to the prediction. Univariable logistic regression analysis depicted that mastitis was more prevalent in does with increased age, parity and during the season Nov-Dec.