Preliminary Assessment of Dietary Yeast, Saccharomyces cerevisiae, Protein for Red Sea Bream.

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Red sea bream, <I>Pagrus major</I>, having a mean body weight of 11 g, were fed on diets containing yeast, <I>Saccharomyces cerevisiae</I>, protein (YP) at 0, 17, 25.5, and 34% for 30 days. Both final mean body weight and hepatopancreas-somatic index showed significant differences among the dietary treatments and increasing trends with the increase in dietary YP levels. Feed efficiencies and protein efficiency ratios of fish fed 17 and 25.5% YP diets were slightly lower than those fed 0 and 34% YP diets. No significant differences among the dietary treatments were found in hematology, stomach- and intestine-somatic indices, proximate compositions of whole body and the hepatopancreas. Also apparent protein and sugar digestibilities appeared no significant differences between 0% and 17% YP diets, respectively. These results suggest that YP is a potential substitutes for brown fishmeal in red sea bream diet.
日本水産増殖学会の論文