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This review examines the scientific basis for claims that commercial probiotics prevent diarrhoea and increase digestive performance in young farm animals. Suppression of pathogenic coliforms in the stomach and intestine by competitive growth and bacteriocidal secretions of lactic acid bacteria justifies the use of lactobacilli in probiotics. However, there is as yet insufficient evidence to support the notion of a beneficial digestive role for this gut microflora.
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J. W. Sissons (1989) studied this question.
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