Evaluation of the dressing percentage of 3-year-old experimental scaly crossbreds of the common carp (Cyprinus carpio, Linnaeus 1758) in relation to sex
2006
Buchtova, H.(Veterinarni a Farmaceuticka Univ., Brno (Czech Republic)) E-mail:[email protected] | Svobodova, Z.(Veterinarni a Farmaceuticka Univ., Brno (Czech Republic)) | Kocour, M.(Jihoceska Univ., Vodnany (Czech Republic). Vyzkumny Ustav Rybarsky a Hydrobiologicky) | Velisek, J.(Jihoceska Univ., Ceske Budejovice (Czech Republic). Zemedelska Fakulta)
The aim of the present study was to evaluate the effect of sex on dressing percentage in 3 bisexual groups of hybrid carps, 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 (K3). There were practically no differences in growth variables of male and female carps between the pure line PS carp and the hybrids M2 x M72 and PS × ROP. 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), and body weights (FW, CW and FilletWabs by 11.37%, 13.70% and 14.83%, respectively). In all the groups studied, the weight of male gonads was significantly higher than that of ovaries.
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