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Ribogospod. nauka Ukr., 2025; 4(74): 254-271
DOI: https://doi.org/10.61976/fsu2025.04.254
UDC [639.3.043.13:636.087.74]:639.371.52

Prospects for the use of sunflower concentrate as a source of protein in carp feeds

O. Deren, This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID ID 0000-0002-8246-9456, Institute of Fisheries of the National Academy of Agrarian Sciences of Ukraine, Kyiv

Purpose. Determination of prospects, technological aspects, and effectiveness of introducing sunflower concentrate into carp feeds according to productive and individual biochemical parameters characterizing the functional state of the fish body.

Methodology. The object of the study was age-1+ carps with an average initial weight of 19.3 g. Aquariums with a volume of 80 dm3 were used to ensure optimal identical physicochemical parameters of the aquatic environment. The carps were fed twice a day for 20 days. A control group and four experimental groups were formed. The control group was fed a compound feed of a specific composition. Sunflower concentrate was added to the diet of the experimental groups to completely or partially replace the following components in the feed: 100% fish meal (Experiment 1), 50% fish meal (Experiment 2), 100% soybean meal (Experiment 3), 100% sunflower meal (Experiment 4). Based on the results of the studies, the fish productive parameters and the activity of antioxidant and digestive enzymes in the control and experimental groups were analyzed using generally accepted methods.

Findings. Studies have shown a significant effect of experimental feeding on the functional parameters of fish.

In all experimental groups, an increase in the activity of antioxidant enzymes (superoxide dismutase and catalase), as well as lipid peroxidation products (diene conjugates and TBA products), was recorded. A significant increase in the activity of intestinal tissue enzymes (alkaline phosphatase and gamma-glutamyl transpeptidase, α-amylase, alanine aminotransferase) was also observed. This indicates an intensification of digestive and metabolic processes, as well as the activation of mechanisms of adaptation to oxidative stress.

The highest weight gain rates were in Experiments 3 and 4 – 11.6% and 23.5%, respectively. In Experiment 2, the weight gain was 5.2% higher than the Control, and in Experiment 1 – 11.6% lower.

According to productivity parameters, the use of sunflower concentrate to replace soybean meal or sunflower meal in carp feed is promising. It is necessary to study in more detail the prolonged effect of experimental feeding on the activity of the digestive and antioxidant systems of the body, as well as to establish economic efficiency in production conditions.

Originality. New data have been obtained on the methods and amount of sunflower concentrate used in carp feeding as a high-protein feed component.

Practical Value. The study aims to solve the urgent problem of the shortage of affordable and highly nutritious feed components for fish. The practical application of the results obtained provides an opportunity to optimize the use of local raw materials, thereby reducing dependence on limited sources of protein and imports of raw materials for the production of carp feeds.

Keywords: carp, sunflower concentrate, non-traditional feed components, local raw material resources, productivity parameters, functional state of the body.

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