Yeast cell wall preparation from Saccharomyces cerevisiae provides protection in Indian major carp, Labeo rohita

Effect of orally administered yeast cell wall (YCW) preparation from Saccharomyces cerevisiae was studied in rohu, Labeo rohita against bacterial pathogen, Aeromonas hydrophila. Fish were fed experimental diet for 15 days and then switched back to control diet. Control and test animals were challenged by intra-peritoneal injection of virulent A. hydrophila on day15 and mortality percentage was calculated. The lower mortality was observed in YCW fed fish than control. The protection of YCW fed fish was 70%. The result showed that the supplementation of YCW preparation (Nutriferm)^(TM) in feed for 15 days had a considerable immunostimulatory and protective effect. This may be useful while taking disease control strategies for this fish species.