Turkish Journal of Veterinary & Animal Sciences
Incubation and Yolk Sac Periods of Closely Purebred and Reciprocal Hybrids of Erzurum and Silifke Rainbow Trout (Oncorhynchus mykiss)
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 - E_F x E_M; Erzurum female X Silifke male - E_F x S_M; Silifke female X Silifke male - S_F x S_M; Silifke female X Erzurum male - S_F x E_M). 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 E_F x E_M, E_F x S_M, S_F x S_M and S_F x E_M 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 S_F x S_M group.
Rainbow trout, purebreeding, reciprocal hybridization, hatchery rate, sac fry, eggs
ARAS, N. MEVLÜT; AYIK, ÖZER; KOCAMAN, E. MAHMUT; and YANIK, TELAT (2003) "Incubation and Yolk Sac Periods of Closely Purebred and Reciprocal Hybrids of Erzurum and Silifke Rainbow Trout (Oncorhynchus mykiss)," Turkish Journal of Veterinary & Animal Sciences: Vol. 27: No. 1, Article 8. Available at: https://journals.tubitak.gov.tr/veterinary/vol27/iss1/8