Cold shock and its effect on biochemical indices, cortisol and electrolyte changes in Chao Phraya catfish, Pangasius sanitwongsei Smith, 1931.

Autor: Sutthi, Nantaporn, Panase, Arporn, Phinrub, Wikit, Srisuttha, Phanit, Panase, Paiboon
Předmět:
Zdroj: Comparative Clinical Pathology; Oct2022, Vol. 31 Issue 5, p757-764, 8p
Abstrakt: The aim of this research was to study the influences of cold shock on some biochemical and physiological changes in Pangasius sanitwongsei. To simulate a stressor, four different water temperature levels (25 °C, 25–22 °C, 25–17 °C, and 25–15 °C) were used. Results showed that cold shock affected biochemical and physiological indices. The highest levels of ALT and glucose were found in the group subjected to 25–17 °C; meanwhile, the lowest AST was observed in a group exposed to 25–22 °C. The highest cortisol level was observed in the group exposed to 25–15 °C. The highest and the lowest levels of Na+ were found in the group exposed to 25–15 °C and 25–17 °C, respectively. The lowest level of K+ was found in the group exposed to 25–15 °C. Cl was shown to be at its highest level in the group exposed to 25–22 °C and to have rapidly decreased in the group exposed to 25–17 °C. The highest Na+/K+ ratio was found in the group exposed to 25–15 °C and in the control group. Moreover, the Na+/Cl ratio trend was similar to that of the Na+/K+ ratio. Furthermore, the (Na+ + K+)/Cl ratio dramatically decreased in the group exposed to 25 to 22 °C and then slightly increased with the decreasing water temperature. Based on our results, a rapid decrease of about 8–10 °C (3 °C/h) from the ambient temperature significantly influenced stress responses, and this causes changes to cortisol, serum biochemistry, and electrolyte levels. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index