| 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 examine phenotypic and genotypic antimicrobial resistance of staphylococci from milk samples from cows with subclinical and clinical mastitis and from cows without mastitis symptoms to methicillin, tetracyclines, macrolides and lincosamides (ML). Of 207 strains, including 34 S. aureus and 173 coagulase-negative staphylococci (CNS), 11 (6.4%) CNS strains were phenoty...

Six hundred lactating dairy buffaloes from four districts (Lahore, Sialkot, Narowal and Okara) of Punjab, Pakistan were screened for subclinical mastitis using White Side Test and subsequent bacterial isolation. Overall prevalence of subclinical mastitis was 44% (264/600). It was the highest (58%) in animals kept as individual holding at backyards followed by small holdings in periurban area (4...

A study was conducted to assess the incidence and economics of subclinical form of bovine mastitis in Central Region of India. Daily milk records of 187 animals during three seasons were collected and subjected to analysis. The economic loss due to reduction in yield, clinical expenses, and additional resources used were quantified and aggregated. The losses due to mastitis in monetary terms we...

Coagulase-negative staphylococci (CNS) have become the most common bovine mastitis isolate in many countries and could therefore be described as emerging mastitis pathogens. The prevalence of CNS mastitis is higher in primiparous cows than in older cows. CNS are not as pathogenic as the other principal mastitis pathogens and infection mostly remains subclinical. However, CNS can cause persisten...

Studies were performed on 26 cows, divided into 3 groups on the basis of serological (by immunodiffusion test) and haematological analyses for bovine leukosis: Group I seropositive without changes in haemogram; group II seropositive with changes in haemogram and group III (control) BLV negative. A statistically significant difference was observed in the incidence of subclinical mastitis in cows...

Mastitis is an important infection that affects herd health, udder health and milk yield of individual animals. Somatic cells (SCs) naturally present in are used as indicator subclinical mastitis, but also to assess quality safety. cell count the main monitoring variable safety assessment. This review especially focuses on effect SCs food their dairy technology. The most significant SCC technol...

The aim of this study was to investigate the presence of virulence genes in 46 coagulase-negative staphylococci (CNS) strains isolated from 46 udder quarters of 46 cows with subclinical mastitis. The isolates were examined phenotypically (cultural features, Gram stain, catalase, coagulase, API tests) and genotypically for: icaA, icaAB, icaD, atlE, bhp, agrA, sarA, mecA, and blaZ genes. These is...