Study and evaluation of the influence of the energy-protein number of compound feed on the efficiency of rainbow trout growing
Abstract
The article considers the results of the effectiveness of compound feed with different energy-protein numbers. The formulas of compound feed for rainbow trout with the energy-protein numbers of 9.6, 7.7 and 6.5 have been developed. It has been established that with an increase in the temperature of the water for growing rainbow trout, the energy-protein ratio decreases, since with an increase in temperature, the trout’s need for protein increases, and the energy costs of the feed decrease. As studies have shown, the maximum absolute and relative growth of rainbow trout was noted in the variant with the use of compound feed with an energy-protein number of 9.6 in the trout diet. Analysis of feed costs showed that the lowest feed coefficient was observed when feeding rainbow trout with compound feed with an energy-protein number of 9.6. It was revealed that a high protein content in the blood serum was noted for the variant of compound feed with an energy- protein number of 6.5, hemoglobin with an energy-protein number of 7.7 and 9.6.
About the Authors
Zh. V. Koshak
Fish Industry Institute, the National Academy of Sciences of Belarus
Беларусь
Беларусь
Zhanna V. Koshak – Ph.D. (Engineering), Associate Professor
22, Stebeneva Str., 220024, Minsk
E. E. Rybkina
Fish Industry Institute, the National Academy of Sciences of Belarus
Беларусь
Беларусь
Evgeniya E. Rybkina – Junior Researcher, Feed Laboratory
22, Stebeneva Str., 220024, Minsk
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Review
For citations:
Koshak Zh.V., Rybkina E.E. Study and evaluation of the influence of the energy-protein number of compound feed on the efficiency of rainbow trout growing. Belarus Fish Industry Problems. 2025;(41):20-35. (In Russ.) https://doi.org/639.3.043
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