A Review: Using Yeast Extract as Feed Additive in Pig Diets
A Review: Using Yeast Extract as Feed Additive in Pig Diets
Siriporn Namted, Kanokporn Poungpong, Wiriya Loongyai, Choawit Rakangthong, Chaiyapoom Bunchasak*
ABSTRACT
Currently, there is interest in identifying alternative feed additives to replace antibiotic growth promoters in pig diets. This article reviewed the effects of using different types of yeast extract (YE), their fractions, and the dosage as feed additive on the growth performance, immune function, and gut morphology of pigs. Inconsistent results have been reported for the various yeast products utilized in the animal feed industry, with differing types of YE processing (autolysis or hydrolysis) and differing doses/responses. In a feed additive, the components of the cell wall (β-glucan and mannan-oligosaccharides) and some of their cellular metabolites are key beneficial factors in promoting the growth performance, immunological response, gut morphology, gut microbiota, and feed consumption of pigs.
Keywords | Yeast extract, Yeast cell wall, Performance, Immune, Pig
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