Published in Scientific Papers. Series D. Animal Science, Vol. LXV, Issue 1
Written by Marcel Daniel POPA, Elena MOCANU, Viorica SAVIN, Floricel DIMA, Neculai PATRICHE
Climate change can affect the life cycle of fish reared in earthen ponds, especially in winter, when the metabolism is reduced and the fish no longer feeds due to low temperatures. In Romania, in recent years, winter temperatures have been higher than normal, justifying the need to assess biochemical changes in fish meat. The biochemical characterization of macronutrients in carp meat was performed by monitoring during the winter, the following parameters: moisture, proteins, lipids, ash, fatty acids in fish meat, temperature and oxygen of the water. The experiment was conducted between November 2020 - March 2021, the biological material being represented by common carp (Cyprinus carpio), aged one summer. At the beginning of winter, saturated fatty acids (25.80%) and monounsaturated fatty acids (49.03%) were found in a higher proportion compared to the end of winter, when polyunsaturated fatty acids had the highest percentage (55.38%) of the entire amount of lipids. The amount of protein, fat and ash during the winter period decreased but insignificantly, while the water content of the meat increased. The biological material recorded a physiological loss of 27.28% of the initial average mass.
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