In vitro antagonism of Escherichia coli by piglet small intestinal bacteria isolated by selective enrichment in media containing sow colostrum, piglet feed or brain heart infusion.

A strain of Bijdobacterium bijidum which was dependent on bifidus factors was administered to four groups of germfree mice each receiving a different sample of human milk containing the same concentration of bifidus factors. The strain became established in three of the four groups in numbers varying between 5 x lo7 and 1 x lO'O/g faeces. B. hrJidum also became established in numbers varying between 5 x lo9 and 2 x IO' O/g faeces in mono-associated mice receiving diets containing little or no bifidus factors. The caeca of all the germ-free mice examined contained bifidus factors in higher concentrations than in human milk. This concentration decreased in mice where B. bijidum was established. Thus, no relation was observed between the dietary concentration of bifidus factors and the faecal levels of B. bifidum. In addition, no antagonism was observed between B. bijidum and an Escherichia coli strain, a Klebsiella pneumoniae strain and a Bacteroides sp. strain, all isolated from the stools of newborn babies, although the caecal pH of mice receiving human milk fell to 5.2.

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In vitro antagonism of Escherichia coli by piglet small intestinal bacteria isolated by selective enrichment in media containing sow colostrum, piglet feed or brain heart infusion.

Cited by 4 publications

References 5 publications

Microorganisms in Hindgut Fermentors

Microorganisms in Hindgut Fermentors

Probiotics for pigs

Effect of Bovine or Human Milk on the Establishment ofBifidobacterium bifidumand Some Other Bacteria from the Human Neonatal Microflora in Gnotobiotic Mice

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