Mastitis is one of the most frequent problems in contemporary dairy production. The primary objective of these investigations was to determine the incidence and species of bacteria in cows milk samples from 4 farms, which yielded a positive reaction to the California mastitis (CM) test. Milk...

To determine the prevalence of bacterial mastitis in cattle, milk samples positive for California mastitis test (CMT) were cultured during a period of almost 4 years [date not given]. The bacterial species isolated from 2904 milk samples were coagulase negative staphylococci (n=879, 30.27%), ...

The susceptibility of pathogenic Pasteurella haemolytica and P. multocida causing respiratory disease in pigs and of Escherichia coli, Streptococcus agalactiae, Streptococcus dysgalactiae, Streptococcus uberis, Staphylococcus aureus, Staphylococcus spp. and coagulase negative staphylococci causing...

Bacteriological examination of the milk was negative in 23 of 100 cases. E. coli was most frequently found to be the causative organism (23%), followed by S. aureus (19%), C. pyogenes (10%), Str. dysgalactiae (9%), Str. agalactiae (5%), and a number of other pathogenic agents such as atypical...

I & II. Work done by the various departments of the College included the following: leptospirosis (an increasing incidence of L. pomona infection in cattle and pigs in Ontario was noted); blood typing for bull registration, parentage tests and freemartinism in twin calves; vaccination against virus ...

Following examination of samples of milk in the MASTITIS Testing Laboratory, group segregation is recommended. Group 1, Negative, Group 2, Positive, for mastitis not caused by Sir. agalactiae, i.e., Staphylococci, Str. uberis, Str. dysgalactiae or coliform organisms; Group 3, Positive for Str....