The experience of growing rainbow trout in high-mountain conditions of South Vietnam: growth and chemical composition of skeletal muscle
Abstract
The aim of this work was to study the growth and chemical composition of skeletal muscle of rainbow trout Oncorhynchus mykiss, grown in the farm “Khlong-Klang” of South Vietnam on a high plateau (about 1.5 km above sea level). For the study were selected 27 individuals of the trout at the age of 21 months. and samples 5 types of feed. We measured the length and weight of fish in samples of muscle and feed was determined by the water content and dry matter, fat, protein, minerals, nitrogen-free extractives in the feed was determined by the content of fiber and metabolizable energy. Rainbow trout at the age of 21 months had a length of 33.9±0.5 cm (29 to 38 cm), the average weight of 407±20 g (from 180 to 580 g). Fatness trout on Fulton on average was 1.03±0.02 (from 0.79 to 1.24). The fatness by Clark — 0.97±0.02 (from 0.75 to 1.16). Skeletal muscle trout contained the water 73.9±0.4% of dry matter — 26.1±0.4% of it protein 18.9±0.3%, fat — 4.0±0.9%, ash content of 1.4±0.3% and BEV — 1.8±0.2%. Low weight and fatness studied trout associated with the conditions of fish farming. The content of basic nutrients and metabolizable energy in feed used in fish farming, much lower values are recommended for rainbow trout. In general, the climatic conditions for growing trout in a high mountain plateau and the absence of a stable feeding system significantly affect the on fish growth, but to a much lesser extent on the chemical composition of skeletal muscle.
About the Authors
D. A. Miroshnichenko
P. G. Demidov Yaroslavl State University (FSBEI HE «DYSU»)
Russian Federation
Russian Federation
Yaroslavl
E. A. Flerova
P. G. Demidov Yaroslavl State University (FSBEI HE «DYSU»); Yaroslavl Scientific Research Institute of livestock breeding and forage production — Federal State Budget Scientific Institution «Federal Williams Research Center of Forage Production and Agroecology», (FWRC FPA)
Russian Federation
Russian Federation
Yaroslavl
Mikhajlovskij, Yaroslavl region
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Review
For citations:
Miroshnichenko D.A., Flerova E.A. The experience of growing rainbow trout in high-mountain conditions of South Vietnam: growth and chemical composition of skeletal muscle. Trudy VNIRO. 2018;170:116-123. (In Russ.)
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