Estimation of the Genetic Parameters on Egg Components and Egg Qualities in Korean Native Ogol Fowl

한국재래오골계(韓國在來烏骨鷄)의 난구성분(卵構成分) 및 卵質(卵질)의 유전모수추정(遺傳母數推定)

This study was conducted to estimate heritabilities and genetic correlations on egg compositions and egg qualities in Korean Native Ogol fowl. The data were gathered from a total of 58,320 eggs in 450 pullets produced from 150 dams and 20 sires of Korean Native Ogol fowl raised at Chungnam National University from June 18, 1987 to April 6, 1989. The results obtained are summarized as follows : 1. The heritability estimates of egg compositions based on the variance of sires, dams and combined components were 0.620 - 0.723, 0206 - 0.300 and 0.413 - 0.511 for albumen weight: 0.439 - 0.737, 0.484 - 0.544 and 0.492 - 0.615 for yolk weight: 0.172 - 0.187, 0.412 - 0.642 and 0.309 - 0.503 for shell weight, respectively. 2. The heritability estimates of egg qualities based on the variance of sires, dams and combined components were 0.202 - 0279, 0.557 - 0.819 and 0.428 - 0.508 for shell thickness : 0.202 - 0.394, 0.119 - 0.678 and 0.256 - 0.440 for albumen height : 0.108 - 0.443, 0237 - 0.698 and 0244 - 0.399 for Haught units, respectively. 3. The genetic and phenotypic correlations of egg compositions were as follows; The coefficients between albumen weight and yolk weight were 0.089 - 0.564 and 0.084 - 0.235; between albumen weight and shell weight were 0.396 - 0.925 and 0225 - 0.544; between yolk weight and shell weight were 0.220 - 0.357 and 0.098 - 0.358, respectively. 4. The genetic and phenotypic correlations of egg qualities as follows; between shell thickness and albumen height were 0.082 - 0.356 and - 0.163 - 0.060; between shell thickness and Haught units were - 0.076 - 0.167 and - 0.185 - 0.010; between albumen height and Haught units were 0.338 - 0.604 and 0.154 - 0285, respectively. 5. The genetic correlations of egg compositions and egg qualities were as follows: between albumen weight and shell thickness, albumen height. Haught units were - 0.380 - - 0.002, 0239 - 0.387, and - 0279 - - 0.127; between yolk weight and shell thickness, albumen height, Haught units were - 0.294 - - 0.133, - 0.049 - 0.133 and - 0.196 - - 0.136; between shell weight and shell thickness, albumen height, Haught units were 0.127 - 0.476, 0.140 - 0273 and 0.038 - 0223, respectively.

본(本) 연구는 한국재래오골계(韓國在來鳥骨鷄)의 난구성분(卵構成分) 및 난질(卵質)에 대한 유전력(遺傳力) 및 유전상관(遺傳相關)을 추정(推定)하여 닭의 효율적(效率的)인 개량을 위한 육종목표(育種目標)의 설정(設定)과 선발(選拔)을 수행하는데 필요한 기초자료을 얻고자 충남대학교(忠南大學校) 농과대학(農科大學) 부속동물사육장(附屬動物飼育場)에서 1987연 6월 18일부터 1989년 4월 6일까지 500일 동안 부가계(父家系) 20수와 모가계(母家系) 150수에서 생산된 450수의 자손으로부터 생산된 계란(鷄卵) 38,320개의 난구성분(卵構成分)을 조사하여 얻어진 결과는 다음과 같다. 1. 난구성분(卵構成分)의 유전력추정치(遺傳力推定値)는 부분산성분(父分散成分), 모분산성분(母分散成分) 및 부모분산성분(父母分散成分)에서 난백중(卵白重)은 각각 0.620 - 0.723, 0.206 - 0.300 및 0.413 - 0.511이었고, 난황중(卵黃重)은 각각 0.439, - 0.737. 0.484 - 0.544 및 0.492 - 0.615이었으며, 난각중(卵殼重)은 각각 0.172 - 0.387, 0.412 - 0.642 및 0.309 - 0.503이었다. 2. 난질(卵質)의 유전력추정치(遺傳力推定値)는 부분산성분(父分散成分), 모분산성분(母分散成分) 및 부모분산성분(父母分散成分)에서 난각(卵殼) 두께는 각각 0.197 - 0.279, 0.557 - 0.819 및 0.428 - 0.508이었고, 난백고(卵白高)는 각각 0.202 - 0.394, 0.119 - 0.678 및 0.256 - 0.440이었으며, Haught units는 각각 0.108 - 0.443, 0.237 - 0.698 및 0.244 - 0.399이었다. 3. 난구성분간(卵構成分間)의 유전상관(遺傳相關) 및 표현형상관(表現型相關)은 난백중(卵白重)과 난황중간(卵黃重間)에 각각 0.089 - 0.564, 0.084 - 0.235이었고, 난백중(卵白重)과 난각중간(卵殼重間)에는 각각 0.396 - 0.925, 0.225 - 0.544이었으며, 난황중(卵黃重)과 난각중간(卵殼重間)에는 각각 0.220 - 0.375 및 0.098 - 0.358이었다. 4. 난질간(卵質間)의 유전상관(遺傳相關) 및 표현형상관(表現型相關)은 난각(卵殼)두께와 난백고간(卵白高間)에 - 0.082 - 0.346, - 0.163 - 0.060이었고, 난각(卵殼)두께와 Haught units간(間)에는 각각 - 0.076 - 0.167 및 - 0.185 - 0.010이었으며 난백고(卵白高)와 Haught units간(間)에는 각각 0.338 - 0.604 및 0.154 - 0.285 이었다. 5. 난구성분(卵構成分)과 난질간(卵質間)의 유전상관(遺傳相關)에서 난백중(卵白重)과 난각(卵殼)두께, 난백고(卵白高), Haught units간(間)에는 각각 - 0.380 - - 0.002, 0.239 - 0.381 및 - 0.279 - 0.127이었고, 난황중(卵黃重)과 난각(卵殼)두께, 난백고(卵白高) 및 Haught units간(間)에는 각각 - 0.294 - 0.133, - 0.049 - 0.133 및 - 0.196 - - 0.136이었으며, 난각중(卵殼重)과 난각(卵殼)두께, 난백고(卵白高), Haught units간(間)에는 각각 0.127 - 0.476, 0.140 - 0.273 및 0.038 - 0.223 이었다.