0.±0.(geometric mean)and 0.0±0.8(arithmet— ic mean)by regression of offspring on dam in sire; 0.77 by half—sib corr— elation in unit.
0.±0.(geometric mean)and 0.0±0.8(arithmet— ic mean)by regression of offspring on dam in sire; 0.77 by half—sib corr— elation in unit.
用公羊内女母回归法为0.±0.(几何均数),0.0±0.8(算术均数):用单元内半同胞相关法为0.77。