| This study was undertaken to estimate the prevalence and antimicrobial susceptibility of gram negative bacteria (GNB) recovered from dairy cows with subclinical mastitis (SCM) with detection of β-lactamase encoding genes, sulphonamide encoding gene and intergron classes by polymerase chain reaction (PCR). In total, 180 cow’s milk samples were collected from three different dairy farms. Milk s...

OBJECTIVE To determine the association between results of in vitro antimicrobial susceptibility tests and outcomes in cows that received intramammary treatment with pirlimycin hydrochloride for subclinical mastitis associated with gram-positive pathogens. DESIGN Case-control study. ANIMALS 132 dairy cows (178 mammary glands with subclinical mastitis caused by 194 pathogen isolates). PROCE...

The aim of this study was to determine antimicrobial resistance patterns of Staphylococcus aureus isolated from bovine subclinical mastitis. California Mastitis Test was used for 2,160 quarters of 540 dairy cattle in 8 commercial dairy farms of Alborz province, Iran. Antimicrobial susceptibility test was performed by the disk diffusion method on Mueller Hinton agar. The results indicated that S...

the objective of the present study was to determine whether there was an association between the in vitroantimicrobial sensitivity test results of subclinical mastitis pathogensand bacteriological cure following intramammary treatment using a combination of nafcillin, penicillin, and streptomycin (nps). eighty-six intramammary pathogens from 43 cows were examined inthis study. most intramammary...

The present study was designed to determine the quarter-wise comparative prevalence of mastitis in buffaloes and crossbred cows. Milk samples collected from 50 dairy buffaloes and 50 crossbred cows were tested for subclinical mastitis by Surf Field Mastitis Test. In addition, all milk samples were processed for isolation and identification of pathogens. In buffaloes, overall prevalence of subcl...

four-hundred milk samples from half udders of 20 flocks of native breed goats were asepticallycollected. the samples were examined by california mastitis test (cmt). twenty-one (5.25%) of 400 werecmt-positive. the cmt-positive samples were then cultured and the following bacteria were isolated:staphylococcus aureus in 3 (14.28%), cns (coagulase-negative staphylococci) in 14 (66.66%), streptococ...

to determine the prevalence of bacterial mastitis in cattle, milk samples positive for california mastitistest (cmt) were cultured during a period of almost 4 years. the bacterial species isolated from 2904 milksamples studied were coagulase negative staphylococcus sp. in 879 (30.27%) samples, streptococcusagalactiae in 642 (22.11%), s. dysgalactiae in 332 (11.43%), e. coli in 295 (10.16%), sta...

A total of 335 quarter milk samples from crossbred dairy cows were subjected to California mastitis (CMT), sodium lauryl sulphate (SLST), and somatic cell count (SCC) tests. CMT positive milk samples were 227, while 108 samples were CMT negative. Milk samples positive by SLST and SCC were 261 and 180 respectively. The CMT positive samples were subjected to cultural isolation (gold standard test...

The primary objective of this study was to determine the aetiology of bovine mastitis in ten herds of Holstein Friesian cow in Jordan, the prevalence of mastitis pathogens in dairy cows and their resistance to selected antimicrobial agents. Milk samples were collected from 220 lactating cows to determine the clinical and subclinical mastitis by white side test and confirmed by cultural tests. I...