180일령 넙치 Paralichthys olivaceus의 성장형질에 대한 유전모수 추정 및 유전능력평가 재현성 검정

Abstract

This study estimated the genetic parameters and breeding values for the growth-related traits of the 1st generation produced in 2005. The heritability of body weight, total length, body height, body shape and condition factor of 180 days old olive flounders Paralichthys olivaceus, the 1st generation of selection, was estimated as 0.564, 0.590, 0.588, 0.306 and 0.332, respectively. And reproductivity of genetic evaluation for crossing superior flounders and inferior ones was tested using the subsequent generation produced in 2006 based on the breeding values of 1st generation. In the least-squares means of body weight and total length for each group of crossing, the values of crossing group between superior flounders (S×S) showed 145.6±1.8 g and 22.4±0.1 cm, respectively. The values of crossing group between superior and inferior flounders (S×I) showed 133.2±2.5 g and 22.1±0.1 cm, respectively. The values of crossing group between inferior flounders (I×I) showed 114.0±2.1 g and 21.08±0.12 cm, respectively. In the results, flounders are determined as appropriate selective breeding fish with the high heritability of flounders in early ages at 180 days old, and the reproductivity of genetic evaluation was also high.