Effects of dietary Mannan oligosaccharide (MOS) on grown, survival rate, intestinal morphology and blood cell count of the golden trevally fish (Gnathanodon specious)

Dang Tran Tu Tram, Nguyen Thi Nguyet Hue, Ho Son Lam, Nguyen Truong Tan Tai, Dao Thi Hong Ngoc
Author affiliations


  • Dang Tran Tu Tram Journal of marine science and technology Vietnam Academy of Science and Technology
  • Nguyen Thi Nguyet Hue
  • Ho Son Lam
  • Nguyen Truong Tan Tai
  • Dao Thi Hong Ngoc




Golden trevally fish, mannan oligosacharide, growth, survival, intestinal morphology, blood cell.


The golden trevally fishes (Gnathanodon specious) (2.19 ± 0.23 g) were cultured in glass tanks with density of 20 fishes/tank and they were fed supplemental diets of different MOS concentrations (0; 0.2; 0.4 and 0.6%) for 90 days. Collected data included growth rate, survival rate and some hematological characteristics of this fish. The results demonstrated that MOS supplementation did not affect growth performance, erythrocyte density and blood cell size, however the survival rate was significantly increased. On the other hand, the total number of white blood cells (BC) on the 60th day in the fish fed with MOS supplements (5.78–6.96 × 104TB/mm3) was higher than that in the control group (only 5.43 × 104TB/mm3) with the largest total leukocytes (6.96 ± 0.50 × 104TB /mm3) at 0.2% MOS (p < 0.05).


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How to Cite

Tram, D. T. T., Hue, N. T. N., Lam, H. S., Tai, N. T. T., & Ngoc, D. T. H. (2019). Effects of dietary Mannan oligosaccharide (MOS) on grown, survival rate, intestinal morphology and blood cell count of the golden trevally fish (<i>Gnathanodon specious</i>). Vietnam Journal of Marine Science and Technology, 19(4A), 241–250. https://doi.org/10.15625/1859-3097/19/4A/14600




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