title: [Antagonistic interrelationships of Bifidobacterium bifidum i Proteus vulgaris in vitro in the digestive tract of gnotobiotic chicks].
abstract: The antagonistic relations between Bacterium bifidum, strain I/850 phi, and Proteus vulgaris, strain F-30, were studied. These organisms, when introduced together in equal doses into the digestive tract of gnotobiotic chickens in a single administration, were shown to create certain ecological correlations in various organs with the prevalence of bifidobacteria which exerted no negative influence on Proteus vulgaris. The additional daily administration of bifidobacteria for 3 days running in doses 1000 times as great as the initial dose, the content of both dibifobacteria and Proteus vulgaris in the intestine being at that time at its maximum, resulted in the suppression of the growth of Proteus vulgaris. Our findings indicate that the influence of the pH of the medium should be considered in order to obtain the evidence of significantly pronounced antagonistic relations between the two organisms in vitro.
mesh_terms: D000191:Actinomycetaceae / Q000502:physiology*; D000818:Animals; D000898:Antibiosis; D002645:Chickens / Q000382:microbiology*; D004064:Digestive System / Q000382:microbiology*; D004463:Ecology; D005856:Germ-Free Life; D066298:In Vitro Techniques; D011514:Proteus vulgaris / Q000502:physiology*; D013997:Time Factors
vernacular_title: Antagonisticheskie vzaimootnosheniia Bifidobacterium bifidum i Proteus vulgaris in vitro v pishchevaritel'nom trakte tsypliat-gnotobiontov.