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Published online by Cambridge University Press: 20 November 2017
Antibiotics have widely been used in animal feeding. However, because of the growing concern of consumers towards more natural modes of production, interest in the use of direct fed microbials is now considerable. In dairy production, the Yeast culture (Saccharomyces cerevisiae) has been studied and used. Therefore, an experiment was conducted to evaluate the effects of different levels of yeast (Saccharomyces cerevisiae SC47) on productive performonce of Holstein dairy cows.