To evaluate supplementation with the yeast products Saccharomyces cerevisiae CNCM I-1077 (SC)
and Saccharomyces boulardii CNCM I-1079 (SB) on performance of calves, 24 Holstein calves (12
males, 12 females) were randomly assigned to each of 3 treatments being: C (control treatment), SC
(1 g/d); or SB (1 g/d). Calves were fed whole milk (4.5 l/d) and a starter feed ad libitum from 4 d of
age until weaning. Female calves were weaned at 60 d of age. Neither yeast affected body weight,
body weight gain or feed efficiency, although dry matter intake was higher (P