| dc.description.abstract | Mastitis is one of the multifactorial and expensive diseases of the dairy animals as it not
only reduces the milk production but also leads to detrimental changes in the milk
composition. The aim of this work was to determine the prevalence of clinical and subclinical caprine mastitis with their associated bacterial pathogens and antibiotic
sensitivity patterns during the period from January to June, 2017. A total of 120
lactating goats in Dinajpur district were randomly selected for this study and 240 milk
samples from each udder half were screened for evidence of clinical mastitis by clinical
examination of udder and subclinical mastitis by CMT (California Mastitis Test). The
overall prevalence of clinical and subclinical mastitis was found to be 11.67% and
38.75%, respectively. Bacteriological examination of mastitic milk samples revealed that
Staphylococcus spp. (32.5%) was the major etiological agent of caprine mastitis followed
by Escherichia coli (22.5%), Pseudomonas spp. (12.5%), Klebsiella spp. (12.5%),
Bacillus spp. (5%). Statistical results of the study showed that parameters like age,
parity, litter size and teat lesions had significant effect on caprine mastitis (p< 0.05) but
lactation stage had insignificant effect on mastitis (p> 0.05). Antibiotic sensitivity test
studies of mastitic pathogens from goat milk revealed sensitivity to Levofloxacin,
Gentamicin, Ciprofloxacin and Chloramphenicol. Antibiotic resistance was seen against
Penicillin, Amoxicillin, Azithromycin, Cloxacillin, Erythromycin, Vancomycin,
Amikacin, Cefixime and Cephradine at various degree; the antibiotic resistance me be
due to indiscriminate use of antibiotics in diseases control. It may be concluded that
consumption of infected goat milk by children may host antibiotic resistance bacteria, the
antibiotic resistance gene may transfer to the normal micro-flora that may lead super
infection. | en_US |
