title: Variation in sex ratio between progeny groups in dairy cattle.
abstract: Highly significant differences between progeny groups have been found in the Israeli-Frisian breed of cattle. The standard deviations between groups in the proportion of males was estimated to be 1.5%. Significant correlations between sire and son and between half-sibs in the sex ratio of their progeny suggest that the differences may have a genetic basis.
authors.affiliation: Ministry of Agriculture, Tel Aviv, Israel.
authors.forename: R
authors.initials: R
authors.lastname: Bar-Anan
authors.forename: A
authors.initials: A
authors.lastname: Robertson