[Combined artificial insemination and synchronisation of oestrus in sheep (author's transl)]

A brief introduction is followed by a description of artificial insemination in sheep, based on a review of the literature. A number of experiments are then discussed, which were mainly concerned with the possibilities arising when artificial insemination and synchronisation of oestrus are combined. It is concluded that satisfactory results (70-80 per cent pregnant) may be obtained, provided a large number of live spermatozoa (500 x 10(6)) are inseminated at the right time.