Dergiler / Turkish Journal of Veterinary and Animal Sciences / 2003 / Cilt: 27 - Sayı: 1
Incubation and Yolk Sac Periods of Closely Purebred and Reciprocal Hybrids of Erzurum and Silifke Rainbow Trout (Oncorhynchus mykiss)
- Sayfa
- 51–55
- DOI
- —
Özet
Our aim was to investigate the survival rate at the hatching and yolk sac stage of close-rearing and crossbred rainbow trout population (Erzurum female X Erzurum male - EF x EM; Erzurum female X Silifke male - EF x SM; Silifke female X Silifke male - SF x SM; Silifke female X Erzurum male - SF x EM). A total of 32,976 eggs were incubated, 29,012 of which hatched. The survival rate of the larvae was 88%. The insemination rate, brooding yield and hatching rate of EF x EM, EF x SM, SF x SM and SF x EM were 97.33 ± 0.57, 97.66 ± 0.57, 97.33 ± 0.57 and 97.33 ± 0.57; 93.43 ± 1.81, 93.40 ± 1.85, 72.00 ± 33.80, 88.00 ± 9.64, and 95.47 ± 2.052, 94.73 ± 2.65, 73.80 ± 34.66, and 90.17 ± 9.71%, respectively. Although the differences among all determined averages were not significant, the hatching yield was 20% lower for the SF x SM group.
Abstract
Our aim was to investigate the survival rate at the hatching and yolk sac stage of close-rearing and crossbred rainbow trout population (Erzurum female X Erzurum male - EF x EM; Erzurum female X Silifke male - EF x SM; Silifke female X Silifke male - SF x SM; Silifke female X Erzurum male - SF x EM). A total of 32,976 eggs were incubated, 29,012 of which hatched. The survival rate of the larvae was 88%. The insemination rate, brooding yield and hatching rate of EF x EM, EF x SM, SF x SM and SF x EM were 97.33 ± 0.57, 97.66 ± 0.57, 97.33 ± 0.57 and 97.33 ± 0.57; 93.43 ± 1.81, 93.40 ± 1.85, 72.00 ± 33.80, 88.00 ± 9.64, and 95.47 ± 2.052, 94.73 ± 2.65, 73.80 ± 34.66, and 90.17 ± 9.71%, respectively. Although the differences among all determined averages were not significant, the hatching yield was 20% lower for the SF x SM group.