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The aim of the present study was to compare dressing percentages, with relation to sex, of three bisexual groups of hybrid carp, i.e. Hungarian mirror carp and Northern mirror carp ( M2 x M72), the hybrid line of Prerov scaly carp and Northern mirror carp ( PS x M72), the hybrid line of Prerov scaly carp and Ropsha scaly carp ( PS x ROP), and the pure line of Prerov scaly carp ( PS) in harvest size ( K-3). There were practically no differences in growth variables of male and female carp between the pure line PS carp and M2 x M72 and PS x ROP hybrids. Statistically significant differences in some variables between sexes were found in the scaly hybrid line PS x M72. Females in that group had significantly higher growth rates ( TL and SL by 4.08% and 4.52%, respectively; p < 0.05), and their weight variables were also higher ( FW, CW and FilletW(abs) by 11.37%, 13.70% and 14.83%, respectively; p < 0.05 and p < 0.01). The weight of gonads of male carp from all the groups studied was significantly higher ( p < 0.01) than that of ovaries of female carp ( or, rather, the GSI of male carp was higher).

acta veterinaria brno

Evaluation of the Dressing Percentage of 3-year-old Experimental Scaly Crossbreds of the Common Carp (Cyprinus carpio, Linnaeus 1758) in Relation to Sex