Increased intestinal digestive enzyme activities would affect several blood chemical parameters. Our results showed that glucose and albumin contents in fish fed diets supplemented with inulin and JA were significantly higher than those of fish in the control group. In contrast, Reza et al. (2009) reported that supplementation with inulin (10.0–30.0gkg−1) for 8 weeks had no effect on blood glucose and albumin levels in beluga.