Abstract
This study was conducted to estimate heritabilities and genetic correlations on body shape components in Korean Native Ogol fowl , The data analysis were record of 450 pullets producted 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 sammarized as follows ； 1. On the body components, shank length at 8, 24 weeks and 300 days of age were $8.717\pm$0.363, $9.576\pm$0.390 and $9.646\pm$0.389cm, the breast width were 3.469$\pm$0.234, $4.310\pm$0.345 and $4.752\pm$0.343cm； the breast girth at 8, 24weeks and 300 days of age were $22.819\pm$1.082, $36.719\pm$1.793 and $39.008\pm$1.709cm； the tibia length at 8, 24weeks and 300days of age were $9.941\pm$0.888, $13.183\pm$0.499 and $13.560\pm$0.552cm. 2. The heritability estimates of body shape components based on the variances of sires, dams and combined components from 8, 24 weeks and 300 days of age were 0.235-0.290, 0.589-0.890 and 0.437-0.565 for shank length ； 0.185-0.237, 0.444-0.536 and 0.314-0.392 for breast width ； 0.218-0.552, 0.499-0.746, 0.486-0.558 for breast girth ； 0.339-0.432, 0.281-0.543 and 0.340-0.446 for tibia length, respectively. 3. The genetic correlation coefficient of body shape components were as follows ； between shank length and breast width, breast girth, tibia length were 0.237-0.836, 0.277-0,729 and 0.378-0.915；between breast width and breast girth, tibia length were 0.637-0.889 and 0.384-0.903；between breast girth and tibia length was 0.905-0.995, respectively.
본 연구는 한국재래오골계의 체형에 대한 효율적인 개량을 위한 육종목표의 설정과 선발을 수행하는데 필요한 기초자료를 얻고자 1987년 6월 18일부터 1989년 4월 6일까지 사육되어온 한국재래오골계의 부가계 20수와 모가계 150수에서 생산된 450수 자손 의 검정자료를 분석하여 얻어진 결과는 다음과 같다. 1 체형측정치에 있어서 8주, 24주 및 300일령시의 정강이 길이는 각각 $7.817\pm$0.363, $9.576\pm$0.390 및 $9.646\pm$0.389cm이었으며, 흉폭은 각각 $3.469\pm$0.234, $4.310\pm$0.345 및 $4.752\pm$0.343cm이었고, 흉위는 각각 $22.819\pm$1.082, $36.719\pm$1.793 및 $39.008\pm$1.709cm이었으며, 경골장은 각각 9.141$\pm$0.558, 13.183$\pm$0.499및 13.560$\pm$0.552cm 이었다. 2. 체형에 대한 8주령부터 300일령까지 유전력 추정치는 부분산성분, 모분산성분 및 부모분산성분에서 정강이 길이는 각각 0.235~0.290, 0.589~0.890 및 0.437~0.565이었고, 흉폭은 각각 0.185~0.237, 0.444~0.536및 0.314~0.392이었으며, 흉위는 각각 0.218~0.552, 0.499~0.746 및 0.486~0.558 이었고, 경골장은 각각 0.391~0.432, 0.281~0.543및 0.340~0.446이었다. 3. 체형 측정치간의 유전상관은 정강이 길이와 흉폭, 흉위 및 경골장간에 각각 0.237~0.863, 0.277~0.729 및 0.378~0.915로 정의 계수이었고, 흉폭과 흉위 및 경골장간에 각각 0.637~0.889, 0.384~0.903으로. 대체로 높은 추정치이였고, 흉위와 경골장간에는 0.905~0.990으로 아주 높은 정의 계수이었다.
