Effect of dietary supplementation of Agrimos® on growth performance, feed utilization and immunological parameters of Macrobrachium rosenbergii juveniles

Abstract

The present study was conducted to investigate the impact of adding commercial feed additives Agrimos® (combined yeast, Saccharomyces cerevisiae mannan oligosaccharides, and β-glucan) in the diet of Macrobrachium rosenbergii during the juvenile stage on growth performance, feed utilization, and immunological parameters. Four hundred and fifty juveniles of average weight 2.2 ± 0.02 g were divided into five experimental groups with three replicates each. The experiment was conducted for 56 days. Five isocaloric and isonitrogenous diets were formulated to be contain 350 g kg−1 crude protein and 19.4 MJ GE; four diets contain different levels of Agrimos® (1.5, 2, 2.5, and 3 g kg−1) in addition to control diet without Agrimos®. Final body weight, weight gain, and specific growth rate of Agrimos® fed groups were significantly higher (p 0.05). In addition, the feed conversion ratio and protein efficiency ratio in treatments supplemented by Agrimos® were significantly better (p 0.05) were observed among different treatments. Increased immune response was observed in experimental groups with the 2.5 g kg−1 Agrimos® concentration yielding the significantly higher (p < 0.05) total hemocyte count and phenoloxidase. In conclusion, the additions of Agrimos® in the diet 3 at a concentration of 2.5 g kg−1 improved and enhanced the growth performance and feed utilization of M. rosenbergii juveniles.