The effect of inoculation of Pasteurella haemolytica into the lactating mammary gland of mice, rats, rabbits, sows and cows.
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.
Watkins
G H
GH
Department of Animal Health, Royal Veterinary College, Potters Bar, U.K.
Scott
M J
MJ
Jones
J E
JE
D000818:Animals; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D002417:Cattle; D005260:Female; D016978:Mannheimia haemolytica / Q000302:isolation & purification / Q000472:pathogenicity*; D008414:Mastitis, Bovine / Q000188:drug therapy / Q000209:etiology* / Q000382:microbiology; D051379:Mice; D010326:Pasteurella Infections / Q000188:drug therapy / Q000209:etiology / Q000662:veterinary*; D011817:Rabbits; D051381:Rats; D011919:Rats, Inbred Strains; D013552:Swine
D000900:Anti-Bacterial Agents