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Effect of β-Glucan on cold-stress resistance of striped catfish, Pangasianodon hypophthalmus (Sauvage, 1878)

Author

Listed:
  • S. Soltanian

    (School of Veterinary Medicine, Shiraz University, Shiraz, Iran)

  • M.N. Adloo

    (Islamic Azad University, Bandar Abbas, Iran)

  • M. Hafeziyeh

    (Iranian Fisheries Research Organization, Tehran, Iran)

  • N. Ghadimi

    (Islamic Azad University, Bandar Abbas, Iran)

Abstract

These experiments were performed to determine the effects of dietary β-glucan on stress responses of striped catfish (Pangasianodon hypophthalmus). Fish were fed for nine weeks with a diet containing 0 (control), 0.5% (G1), 1% (G2) and 2% (G3 group) β-glucan. Subsequently, stress responses were studied by evaluating serum cortisol and glucose levels following a constant 24 h cold shock (from 28 °C to 15 °C). Serum cortisol and glucose concentrations were measured after cold treatments of varying durations (prior to, and after one, 12 and 24 h of cold shock stress, respectively). No differences in serum cortisol and glucose levels were found between control and β-glucan-treated fish. However, the mortality rate was significantly lowered in cold challenged fish fed appropriate doses of β-glucan (in G1 and G2 vs. G3 and control group). The results of the present study demonstrate that a proper administrationβ--glucan in the diet could ameliorate the detrimental effects of a severe stress resulting in a reduction in fish mortality.

Suggested Citation

  • S. Soltanian & M.N. Adloo & M. Hafeziyeh & N. Ghadimi, 2014. "Effect of β-Glucan on cold-stress resistance of striped catfish, Pangasianodon hypophthalmus (Sauvage, 1878)," Veterinární medicína, Czech Academy of Agricultural Sciences, vol. 59(9), pages 440-446.
    • Handle: RePEc:caa:jnlvet:v:59:y:2014:i:9:id:7684-vetmed
    DOI: 10.17221/7684-VETMED
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