| prevalence of mastitis pathogens and their resistance against antimicrobial agents in dairy cows in brandenburg, germany. | the primary objective of this study was to determine management practices concerning mastitis in brandenburg, germany, the prevalence of mastitis pathogens in dairy cows, and their resistance to selected antimicrobial agents. a further objective was to study the potential effect of parity and stage of lactation on the resistance of staphylococcus aureus isolates against ampicillin. milk samples for microbiological culture were collected from 4 groups of clinically healthy cows (first lactation, ... | 2006 | 16772573 |