In this article, the novel progresses in fecundity traits of cattle and sheep were reviewed, it was found that fecundity gene (FecB) of Booroola sheep located in sixth chromosome and several molecular markers linked with FecB gene in sheep.

• 本文综述了近年来对牛、羊多胎性状研究的最新成果。 在绵羊上,研究发现了Booroola绵羊的多胎基因(FecB基因)并定位于第6号染色体上,也已发现了一些与FecB基因相连锁的分子遗传标记。