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2023, № 109

UDC: 639.3.043
GSNTI: 69.25.15

Effect of a new feed additive on the growth of salmon fish

The effect of newly developed feed additives containing fish milt and glycerol on the productivity of salmon fish was studied. The object of the research was amber trout. Herds of salmon fish were in the same conditions. The experiment on salmon fish lasted 6 months. The growth, development of fish, and the morphological composition of fish were studied in a comparative aspect. Gross weight gain of trout when fed with additives containing glycerol and milt increased by 12.7-18.2%. The coefficient of fatness in trout of the control group was 1.74. In the groups receiving feed additives, the coefficient of fatness exceeded that of the control group; in group 2 the difference was significant and amounted to 5.2%. There was a decrease in the feeding ratio when using feed additives by 0.7-4.0%, compared to the control due to large weight gains. According to the results of morphometric analysis of trout, it was found that the weight of the gutted carcass in all groups ranges from 77.6 to 79.7%. No pathologies were found in the internal organs of fish in all groups. There were no significant differences between the groups in skin weight. In the experimental groups, bone tissue weight was greater than in the control group (in groups 2 and 3 at P<0.05, in groups 4 at P<0.01). The weight of muscle tissue in all experimental groups exceeded the control, in groups 2, 3 and 4 with significant differences at P <0.05. The research results can be applied in various fish farming areas.
Keywords: Salmon fish, trout, growth, aquaculture, feed additive, glycerin, milt.
DOI: 10.21515/1999-1703-109-161-165

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Authors:

1. Maxim Ekaterina Alexandrovna, PhD in Biology, Federal State Budgetary Educational Institution of Higher Education “I.T. Trubilin Kuban State Agrarian University”.
2. Yurin Denis Anatolyevich, PhD in Agriculture, Federal State Budgetary Scientific Institution "Krasnodar Scientific Centre for Animal Science and Veterinary Medicine".
3. Ezhkin Michail Alexandrovich, postgraduate, Federal State Budgetary Scientific Institution "Krasnodar Scientific Centre for Animal Science and Veterinary Medicine".
4. Pskhatsieva Zemfira Vladimirovna, DSc in Biology, Federal State Budgetary Educational Institution of Higher Education "Gorsky State Agrarian University".
5. Koshchaev Andrey Georgievich, DSc in Biology, professor, Academician of the RAS, Federal State Budgetary Educational Institution of Higher Education “I.T. Trubilin Kuban State Agrarian University”.
6. Kozubov Alexey Sergeevich, postgraduate, Federal State Budgetary Educational Institution of Higher Education “I.T. Trubilin Kuban State Agrarian University”.