Published in Scientific Papers. Series D. Animal Science, Vol. LXVII, Issue 1
Written by Nicoleta-Georgeta DOBROTĂ, Gheorghe DOBROTĂ, Silvia RADU, Mioara COSTACHE, Daniela RADU, Nino MARICA
Due to the increasingly warm winters of the last 20 years, the wintering of cultured carp is achieved with increasing numerical and weight losses. Water temperatures during the winter period reach 10-12oC, temperatures that intensify the metabolism and set the fish material in motion. Because these temperatures are for short periods, no natural food grows in the water. The paper presents the results of the research carried out in the cold seasons of 2020-2021, 2021-2022, and 2022-2023 on cultured carp aged two summers, from the Research and Development Station for Fisheries Nucet. Wintering was done in earthen ponds, in two variants: variant V1 - without feed distribution and variant V2 - with feed distribution. In view of this study, somatic measurements were carried out, both in autumn and in spring, to assess the change in the values of the condition coefficient, survival percentages, as well as the decrease in weight and number, during the cold season period, in the context of climate change.
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