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Intensive Rearing of Young Roach ( Rutilus rutilus (L.)) at 20°C
Author(s) -
Gregory John
Publication year - 1979
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.1979.tb00255.x
Subject(s) - rutilus , biology , gonad , fish <actinopterygii> , development of the gonads , food intake , zoology , fishery , anatomy , endocrinology
SUMMARY A re‐circulating system was used to examine the growth of two groups of young roach at an above ambient temperature of 20°C. An artificial diet was developed on which fish of one summer grew from 1.0 to 6.9 g over a 4.5 month winter period. Partial gonad development and the decrease in food intake to 1% body weight per day amongst fish of greater than 30 g were found to be serious limitations to growth. Parasitic diseases were readily controlled but the appearance of chronic kidney disease remains unexplained.