Sarlin,P J; Dr.Rosamma,Philip(Cochin University of Science & Technology, 2005)
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Abstract:
The study revealed the potential of marine yeasts as a source of
single cell protein and immunostimulant for prawns. Prawns fed with
the selected marine yeasts were showing more growth compared to the
control feed and commercial feed. Yeasts being rich with proteins,
vitamins and carbohydrates serve as a growth promoter for prawns as
being evidenced in this study. The better performance of marine
yeasts, D. hansenii S8 and S100 and C. tropicalis S186 compared to S.
cerevisiae S36 as a feed supplement is worth investigating. Besides
being a rich nutritional source, yeasts act as immunostimulants by
virtue of its high carbohydrate (Beta, 1-3 glucan) and RNA content. Beta, 1-3
glucan, a cell wall component of yeasts /fungi is the most commonly
used immunostimulant in aquaculture. The present study shows that
even the whole cell yeast could serve as a good immunostimulant
when supplied through diet. Extraction of Beta-1,3 glucan results in the
removal of nutrients like proteins, vitamins etc. from the cell biomass.Utilization of the yeast biomass as such in the diet would help perform
a dual role as nutritional component and immunostimulant for
aquaculture applications.
Description:
Dept.of Marine Biology, Microbiology and Biochemistry,
Cochin University of Science and Technology