| slaughterhouse survey of pyelonephritis in dairy cows. | twenty-one rejected kidneys from 2426 slaughtered dairy cows (0.87 per cent) had gross signs of pyelonephritis that were confirmed by histopathology. in all the kidneys the findings were consistent with a chronic rather than an acute infection. one species of bacteria was cultured from 12 of the kidneys and two species of bacteria were cultured from six. the most commonly isolated bacteria were escherichia coli, from eight kidneys, arcanobacterium pyogenes, from seven kidneys and corynebacterium ... | 2005 | 16299366 |