Gizaw, SolomonTesfay, Y.Mekasha, YosephMekuriaw, Z.Gugsa, T.Ebro, A.Gebremedhin, BerhanuHoekstra, DirkTegegne, Azage2017-01-102017-01-10https://hdl.handle.net/10568/78637Hormonal oestrus synchronization in four sheep breeds in Ethiopia: Impacts on genetic improvement and flock productivity