GRNTI 34.39 Физиология человека и животных
GRNTI 62.13 Биотехнологические процессы и аппараты
GRNTI 69.01 Общие вопросы рыбного хозяйства
GRNTI 69.25 Аквакультура. Рыбоводство
GRNTI 69.31 Промышленное рыболовство
GRNTI 69.51 Технология переработки сырья водного происхождения
GRNTI 87.19 Загрязнение и охрана вод суши, морей и океанов
The article gives the results of the study of the fatness and chemical composition of skeletal muscles of underyearling Esox lucius L., grown in different fish-farms of the Yaroslavl and Volgograd regions. The fish was measured, weighed; Foultin’s fatness coefficient was calculated. The amount of water, dry matter, fat, protein, minerals and nitrogen-free extractives were determined in the muscle tissue of the test specimens. In autumn yearlings of both fish farms approach 100 g weight, average body length being 19-21 cm. At the age 2+ pike juveniles of the Volgograd fish farm (sole trader - “Head of the Peasant farm Lozina Ya.V.”) overtake those grown in “Stimul” fish farm, Ltd. in Yaroslavl region in size and mass. However, Fultin’s condition factor in individuals of the Yaroslavl region was significantly higher than in the young from Ya. V. Lozina’s fish farm. There were no statistically significant differences between the water content, protein content, fat content, and nitrogen-free extractives in the skeletal muscles of pike underyearlings from different enterprises. Though, there was registered a significant increase in the amount of mineral substances in the muscle tissue of pike underyearlings from “Stimul”, Ltd ( p < 0,05). On average, muscular tissue of pike underyearlings from “Stimul”, Ltd was larger than that of Ya.V. Lozina’s fish farm in terms of nutrient content and energy value. The study results showed that fatness and chemical composition of the muscle tissue of pike yearlings is more influenced by the sufficient food supply than hydrochemical conditions of the pond.
growth rate, chemical composition, muscle tissue, fingerlings, pike, Fultin’s condition factor
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