Published in Scientific Papers. Series D. Animal Science, Vol. LXVII, Issue 2
Written by Alexandru USTUROI, Marius Giorgi USTUROI, Roxana Nicoleta RAȚU, Mădălina Alexandra DAVIDESCU, Francois DJITIE KOUATCHO, Mohamed KENAWI, Petronella Van der PASCH
Regardless of the accuracy of the technology implementation, the final quality of the fish is also influenced by the conditions to which it is subjected after being extracted from the rearing pond. In the present case study, we proposed an analysis of the physiological reaction of the stock after extraction from the growth ponds. Among others, we were particularly interested in the level of the stress hormone, determined in the samples taken in the study under the conditions of the application of certain stressors. In contrast, comparison of the amount of glycogen led to obtaining very distinctly significant statistical fluctuations (the mean for specimens reared in semi-intensive system was 2.314±0.638 g/100 g and for those grown in intensive system 1.980±0.822 g/100 g). Growth hormone varied between 0.504±0.46 ng/ml in the case of semi-intensive system and 0.694±0.22 ng/ml for intensive system. The values obtained for cortisol showed a significant influence of stress factors on the studied trout. The stress hormone level rises in correlation with both the intensity and type of stressors, starting from the moment the fish are removed from the ponds.
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