streptococcus agalactiae is a major contagious pathogen causing bovine sub-clinical mastitis. the present investigation was carried out to determine some phenotypic characteristics of the s. agalactiae strains isolated from bovine mastitis cases in dairy cows of shahrekord in the west-center of iran. one hundred eighty california mastitis test (cmt) positive milk samples were bacteriologically ...

Clinical mastitis was analyzed with mixed linear models (LM) and survival analysis (SA) using data from the first 3 lactations of >200,000 Swedish Holstein cows having their first calving between 1995 and 2000. The model for both methods included fixed effects of year-month and age at calving, fixed regressions of proportions of heterosis and North American Holstein genes, and random effects of...

Mastitis continues to be a problem for dairymen across the US. Clinical mastitis causes economic loss due to treatment costs, lost quarters, perhaps dying cows and most importantly, discarded milk. Subclinical mastitis on the other hand, silently redu ces milk production and quality until detected with a somatic cell count. It is easy to forget the basics in our attempts to solve a mastitis pro...

The sub-clinical form of mastitis is difficult to detect and causes huge economic loss to the dairy industry. It has become a threat to public health at large, thus there is a need for definite diagnosis of the disease. Therefore, this study was undertaken to identify the novel diagnostic marker for the detection of the sub-clinical form of mastitis. Two-dimensional gel analysis of the whey pro...

Aim: To evaluate blood antioxidant profile and lipid peroxides in dairy cows with clinical mastitis. Materials and Methods: Twelve cases of clinical mastitis in cross-bred cows were selected based on physical examination of udder and milk, California Mastitis Test (CMT), Somatic Cell Count (SCC) and confirmation by bacteriological examination 5 of milk and requisite biochemical tests. Twelve la...

A cross sectional study was conducted during October and November 2006 on 69 smallholder dairy farms with lactating cows in Mvomero and Njombe districts Tanzania, to determine the prevalence of mastitis and to assess the milk quality on the study farms. Clinical mastitis was investigated using clinical changes of udder and milk at animal level. Cow-side California Mastitis Test (CMT) and microb...

Susceptibility to mastitis is in part determined by genetics. Opportunities exist for genetic improvement of resistance to mastitis but currently available means for genetic selection are limited and focus mainly on EBV for SCC and, in countries with health recording, on EBV for clinical mastitis. Further opportunities exist to incorporate available EBV for udder conformation and milking speed ...

Rapid and accurate identification of mastitis pathogens is important for disease control. Bacterial culture and isolate identification is considered the gold-standard in mastitis diagnosis but is time-consuming and results in many culture-negative samples. Identification of mastitis pathogens by PCR has been proposed as a fast and sensitive alternative to bacterial culture. The results of bacte...

The aim of the study was to determine the concentration of serum amyloid A (SAA) and the activity of ceruloplasmin (Cp) in milk from cows with clinical mastitis of various severities and with subclinical mastitis in aspect of their usefulness for the detection of mastitis in cows. The concentration of SAA was determined using the commercial ELISA kit. The activity of Cp was determined according...

BACKGROUND AND AIM Mastitis is a serious disease of dairy animals causing great economic losses due to a reduction in milk yield as well as lowering its nutritive value. The application of somatic cell count (SCC) and alkaline phosphatase activity in the milk for diagnosis of mastitis in buffalo is not well documented. Therefore, the present study was conducted to observe the SCC and alkaline p...