Effect of maturation on the quality of large rainbow trout reared in Estonia

Ilves, P.; Paaver, T.

Effect of maturation on the quality of large rainbow trout reared in Estonia

2002

Ilves, P. | Paaver, T. (Estonian Agricultural Univ., Tartu (Estonia))

Dressing percentage and gonadosomatic index (GSI) of large (2-3 kg) rainbow trout (Oncorhynchus mykiss), produced in Estonian fish farms were estimated. The dressing percentage and GSI did not depend on fish size, but there was a strong negative correlation (r = - 081, p0.001) between themselves. During maturation the flesh color decreased significantly. The male trout had the palest color (13 color card units), the color of fillets of females decreased with maturation from 15 to 14. The immaturate females had the brightest color (17 color card units) and the highest slaughter yield (mean dressing percentage 87%, mean fillet yield 68%). Due to deterioration of quality (smaller slaughter yield and pale color) the maturation of trout causes profit loss for fish farmers and thus, rearing of late maturing all-female strains is recommended.

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AGROVOC Keywords

body weight desarrollo rural estonia estonie fish culture fishes latvia letonia lettonie maturation methode methods oncorhynchus mykiss peces peso corporal piscicultura pisciculture poids corporel poisson (animal) recherche research rural development

Bibliographic information

Publisher

Latvia University of Agriculture

Pagination

p. 88-90

Other Subjects

Investigacion; Metodos; Developpement rural; Maduracion

Language

English

Note

Summary (En)

Table; ill., 15 ref.

ISBN

9984-596-54-0

Type

Summary; Conference

Source

Research for Rural Development '2002. International Scientific Conference Proceedings, Jelgava, Latvia, 22-24 May, 2002, Latvia Univ. of Agriculture, Jelgava (Latvia).- Jelgava (Latvia): Latvia University of Agriculture, 2002.- ISBN 9984-596-54-0. 222 p.

Conference

International Scientific Conference: Research for Rural Development '2002, Jelgava (Latvia), 22-24 May 2002

In AGRIS since: 2003-08-15

Format: AGRIS AP

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This bibliographic record has been provided by Fundamental Library of Latvia University of Life Sciences and Technologies

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