유전 및 육종 : 우리나라 Holstein 젖소의 유효집단크기 조사 연구

This study was carried out to estimate the average inbreeding coefficients and effective population size(EPS) and to seek alternatives on the problems of Holstein cattle in Korea. The data used in this study was obtained from the Korean Animal Improvement Association(KAIA) and 635,268 heads of Holstein records out of 1,872,195 Holstein registration data were used for the analysis. The average inbreeding coefficients were estimated at a range of 0.11 to 1.07%. The average inbreeding coefficients at the 14th, 19th and 22nd generation were estimated at 0.43%, 0.92% and 1.07%, respectively. The estimated inbreeding coefficients within the range of 0%, 0 to 6.25%, 6.25 to 12.5%, 12.5 to 25%, and >25% were observed in 50.5%, 48.3%, 0.8%, 0.1%, and 0.3% of the animals, respectively. The estimated effective population size(EPS) was 619 heads from the 8th to 22nd generation, and 922 heads from the 19th to 22nd generation.