Genetic parameters of growth in rainbow trout, Oncorhynchus mykiss, at early rearing stage

The heritability response for growth of rainbow trout during early developmental stages was detected on the basis of full-sib and half-sib cross between the selected lines. The experiment was done in Shahid Bahonar Salmon Propagation Center, Kelardasht, Iran. Breeders were taken from the stocks maintained in this station. A bifactorial cross was done between two line using four randomly sire and four randomly chosen dams form each line. Analysis of variance revealed a significant difference at 300 days of age between half and full-sib (P0.817) and 225 days (P>0.081). No significant difference between mean body weight of male and female half-sib group was found (P>0.05); neither were there significant differences between sireline (P