STIMULATION OF ESTROUS IN NONPREGNANT SOW S WITH PREGNANT MARE SERUM GONADOTROPIN (PMSG)

The paper summarizes the results of experimental and clinical long-ter m studies of oestrus synchronisation in non-pregnant sows with PMSG. 7 50-800 I.E. PMSG (Prolosan ''Dessau'' and Pregmagon ''Dessau'') were a dministered to healthy sows which were kept under good control of feed ing, keeping, and management 24 hours after weaning of their piglets. No negative effects of this treatment were observed after even years o f treatment, but in contrast positive effects on parameters of reprodu ctive effects on parameters of reproductive fitness were found to occu r. Target categories for stimulation of oestrus are outlined and recom mendations for further indications are given.