The effect of inoculation of Pasteurella haemolytica into the lactating mammary gland of mice, rats, rabbits, sows and cows

• Published in: Journal of comparative pathology Vol. 106; no. 3; p. 221
• Main Authors: Watkins, G H, Scott, M J, Jones, J E
• Format: Journal Article
• Language: English
• Published: England 01-04-1992
• Subjects: Animals; Anti-Bacterial Agents - therapeutic use; Cattle; Female; Mannheimia haemolytica - isolation & purification; Mannheimia haemolytica - pathogenicity; Mastitis, Bovine - drug therapy; Mastitis, Bovine - etiology; Mastitis, Bovine - microbiology; Mice; Pasteurella Infections - drug therapy; Pasteurella Infections - etiology; Pasteurella Infections - veterinary; Rabbits; Rats; Rats, Inbred Strains; Swine
• ISSN: 0021-9975
• DOI: 10.1016/0021-9975(92)90051-U

An isolate of Pasteurella haemolytica (A9), which consistently produced severe mastitis in ewes, was inoculated into the lactating mammary glands of a variety of species. Mastitis did not develop after the inoculation of log-phase bacteria into the mammary gland of lactating mice, rats, rabbits or sows but did so in the mammary gland of two cows. Another A9 isolate from a ewe with mastitis and an A1 isolate from a bovine pneumonic lung also induced mastitis in cows. Thus, in this study, P. haemolytica produced mastitis only in ruminant animals.