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Information × Registration Number 0223U004958, 0121U108913 , R & D reports Title Theoretically substantiate the use of synthetic selection of structural units of Ukrainian carp breeds taking into account their genetic features popup.stage_title Head Kurinenko Hanna A., Кандидат сільськогосподарських наук Registration Date 11-12-2023 Organization Institute of Fisheries of the National Academy of Agrarian Sciences of Ukraine popup.description2 As a result of the research, it was found that the survival rate of hybrids averaged 89.5% with a range of 86 to 92.8%. This rate was 1.3% higher in crossbred groups compared to pure lines. The maximum survival rate, which reached 92.8%, was characterized by crossbreeds obtained from ♀LFC x♂GFC. The average rate of weight loss in hybrids during the wintering period was 99.3 ± 5.92 g, with a range of 75.6 g to 124.0 g, which is an average of 10.7%. In pure lines, the relative rate of weight loss was on the same level as the cross-bred groups, but the absolute rates were in the range of 69.2 - 101.0, with an average rate of 80.9±5.3g. According to the weight loss data, the average indicator of the fatness ratio was 2.46 units in crossbred groups, and 2.49 units in purebred groups. The decrease of this indicator in accordance with the indicators of two-year-olds was 9.4 and 8.6%, respectively. According to the analysis of exterior indicators, no significant differences were recorded. The average weight of crossbred three-year-olds was 2138.9±170.91g, the index of pure lines was 1935.0±100.58 and, accordingly, was inferior by 9.5%. The difference between inbred and pure lines in survival rate was only 0.3%, with the advantage of inbred lines. And, accordingly, it was 92.1% of crossbred three-year-olds and 91.8% of pure-line three-year-olds. The average weight of this year's breeding females was 25.6±3.03 g with a range of 19.6 to 30.9 g. This indicator exceeded the indicator of clean lines by 15.3%. At the same time, the daily growth of pure lines was 0.15 and 0.29 g, and that of local lines was 0.17 and 0.35 g. The survival rate of local females of GFC x SSK this year was 4.9% higher than that of pure lines. On the other hand, this year's local SSK and AZFC were inferior by 5.5% according to this indicator. Product Description popup.authors BEH Vitaly V. Grishyn Bohdan Olegovych Kolesnyk Rafael R. Kurinenko Hanna A. Kuts Uliana Stepanivna Osipenko Mykola I. Pryimak Volodymyr V. Syrovatka Denys A. TUCHAPSKYI YAROSLAV V popup.nrat_date 2023-12-11 Close