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Published online by Cambridge University Press: 22 November 2017
Both antibiotic and probiotic feed additives are in independent use in the pig industry. The modes of action of these two groups of growth-promoters remain to be established. The present study was designed to investigate the effect of inclusion of an antimicrobial feed additive (Tylosin) or a probiotic (ProbiosR, Pioneer Overseas Corporation) on growth rate and the development of intestinal structure and function of pigs from birth to 80 days of age.