Turkish Journal of Fisheries and Aquatic Sciences
2019, Vol 19, Num, 4 (Pages: 279-287)
Physiological and Energy Metabolism Responses of Chinese Loach Paramisgurnus dabryanus (Dabry de Thiersant, 1872) to Waterless Preservation during Transport
Ying Jia 1 ,Yun-Shuo Fan 1 ,Yi-Zhe Wang 1 ,Ying-Hui Chai 1 ,Jin-Wei Gao 1 ,Yong Dou 1 ,Wen-Li Zhou 1 ,Shao Peng 1
1 Tianjin Agricultural University, Tianjin Key Laboratory of Aqua-Ecology & Aquaculture, Fisheries College, Tianjin, China, 300384
DOI :
10.4194/1303-2712-v19_4_02
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To investigate waterless stress during transport from aquacultures to sale points on the
physiological and energy-metabolism properties of Paramisgurnus dabryanus, to improve
for improving traditional preservation methods, the levels of glucose, cortisol, triglyceride,
and cholesterol in serum and the activities of hexokinase (HK), pyruvate kinase (PK), lactic
dehydrogenase (LDH), and succinate dehydrogenase (SDH) in muscle were determined.
Chinese loaches were subjected to water, less-water, and no-water conditions for 8h. Lesswater and no-water stress significantly increased cortisol concentration in serum, while
triglycerides and total cholesterol levels slightly decreased. In the initial stages of stress,
glucose dropped dramatically and then recovered gradually, eventually exceeding that in the
control group. The activities of HK, PK, and LDH increased and then decreased. While HK and
PK activities were significantly higher at the end than at the beginning of the stress, LDH
activity returned to its pre-stress level. Under less-water and no-water stresses, SDH activity
first decreased and then increased. Overall, there were no significant differences between
less-water and no-water groups in the measured parameters, except SDH, at the end of the
experiment, and variations in all parameters were similar. Waterless preservation conditions
resulted in acute stress, acute hyperglycemia, and energetic compensation.
Keywords :
Chinese loach, Water stress, Transportation, Waterless preservation