Identification of aesculin-hydrolyzing streptococci, lactococci, aerococci and enterococci from subclinical intramammary infections in dairy cows.
Aesculin-hydrolyzing, catalase-negative, gram-positive cocci isolated from subclinical intramammary infections in dairy cows were identified to species level using growth characteristics and biochemical activity. The results indicated that the aesculin-hydrolyzing cocci associated with this type of infection are a very heterogenic group. S. uberis strains, including inulin- or beta-glucuronidase-negative isolates, accounted for only about one-third of the collection, and Enterococcus faecalis strains for one-fifth. Other species of some importance included (in descending order of isolation frequency) Aerococcus viridans, Streptococcus pluranimalium, Lactococcus garvieae, Streptococcus bovis and Streptococcus gallolyticus.
Devriese
L A
LA
Faculty of Veterinary Medicine, University of Ghent, Merelbeke, Belgium. luc.devriese@rug.ac.be
Hommez
J
J
Laevens
H
H
Pot
B
B
Vandamme
P
P
Haesebrouck
F
F
D000818:Animals; D002417:Cattle; D003612:Dairying; D016983:Enterococcus / Q000302:isolation & purification* / Q000378:metabolism; D004929:Esculin / Q000378:metabolism*; D005260:Female; D006868:Hydrolysis; D017045:Lactococcus / Q000302:isolation & purification* / Q000378:metabolism; D008414:Mastitis, Bovine / Q000382:microbiology*; D008892:Milk / Q000382:microbiology; D013289:Streptococcaceae / Q000302:isolation & purification* / Q000378:metabolism; D013291:Streptococcus / Q000302:isolation & purification* / Q000378:metabolism
D004929:Esculin