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Turkish Journal of Veterinary & Animal Sciences

DOI

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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 - 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.

First Page

51

Last Page

55

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