Pigment production in human and bovine streptococcus agalactiae strains.

Most of human isolates (66%) and more than a half of bovine isolates from privately-owned herds (57.1%) produced pigment at least on one of two media (DMS-agar, Todd-Hewitt broth). None of bovine isolates from socially-owned farms produced pigment on DMS and TH broth. The results are in accord with previous investigations, in which some biochemical properties and serotypes of human and bovine isolates in Slovenia were studied.