Hemolytic Activity of Staphylococcus Hyicus and Staphylococcus Chromogenes

S k a 1 k a B.: Hemolytic activity of Staphylococcus hyicus and Staphylococcus chromogenes. Acta vet. Bmo, 57, 1988: 3-11. Hemolytic activity of 135 ~ hyicus and 75 ~ chromogenes strains was examined on sheep, rabbit, human, horse and chicken blood agars. The agar bases were supplemented with 5 % washed erythrocytes of the corresponding animal species. The strains of both staphylococcal species under study produced a wide zone of complete hemolysis on rabbit blood agar and a narrow one on media containing h9~se~rythrocytes. ~e hemolytic effects always appeared after 48 h incubation at 37 C. Neither species produced hemolysis on agar containing sheep or chicken erythrocytes, and no synergistic hemolytic effect was observed on sheep blood agar. A direct hemolysis was exhibited by 92 (68 %) ~ hyicus strains on human blood agars. The remaining ~ hyicus strains and ~ chromo genes did not produce hemolysis of human erythrocytes. Hemolytic effects of the staphylococci used as controls were expressed just after 24 h incubation on all kinds of blood agar. We recOllllleJld inclusion of the hemolysis of rabbit erythrocytes among the characteristic properties of ~ hyicus and ~ chromogenes. Staphylococcus hyicus, Staphylococcus chromogenes, hemolytic activity, blood agar, sheep, rabbit, huI:Dan, horse and chicken