EFFECT OF GASEOUS ENVIRONMENT ON GROWTH AND CATALASE CONTENT OF VIBRIO FETUS CULTURES OF BOVINE ORIGIN

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Abstract
Cultures of V. fetus of bovine origin require both O2 and CO2 for growth. Optimum growth of V. fetus on blood agar occurs in an atmosphere consisting of 5% O2 and 10% CO2, either under partial vacuum, or adjusted to 96% of atmospheric pressure by adding H or N. Four of 34 strains grew only slightly better in an atmosphere containing H. Reduced O2 content of the gaseous environment increases the amount of catalase released by V. fetus cells but does not cause catalase-negative vibrios to become catalase-positive.