01769naa a2200301 a 450000100080000000500110000800800410001902400340006010000190009424502200011326000090033352007740034265000140111665000370113065000280116765000170119565000170121265000100122965000270123965000100126665000170127665300170129365300230131065300280133365300080136170000170136977300810138615232402023-06-23       1978    bl uuuu     u00u1 u    #d7 a10.2527/jas1982.5461120x2DOI1 aALLISON, A. J.  aSynchronisation of oestrus and fertility in sheep treated with progestagen-impregnated implants, and prostaglandins with or without intravaginal sponges and subcutaneous pregnant mare's serum.h[electronic resource]  c1978  aAbstract: Synchronisation of oestrus and fertility of 4 groups of 80 ewes were compared. Treatment groups were (1) control, (2) progestagen-impregnated intravaginal sponges, (3) progesterone-impregnated subcutaneous implants, and (4) treated with two injections of prostaglandin 10 days apart. Half of each group re]750i.u. of pregnant mare's serum (PMS). Synchronisation was precise in Groups2, 3, and 4. The percentage of ewes lambing to first mating in PMS-treated ewes was 71.9, 42.1, 48.6, and 28.9 in Groups 1, 2, 3, and 4 respectively and in ewes not treated with PMS was 83.3, 53.1, 68.4, and 45.7 respectively. Fertility was significantly lower (P &lt 0.01) in all treated groups than in the control ewes and lower (P &lt 0.01) in Group 4 than in Group 3 ewes.  aPregnancy  aPregnant mare serum gonadotropin  aProgestational hormones  aProgesterone  aReproduction  aSheep  aSubcutaneous injection  aOvino  aReprodução  aDrug effects  aManejo reprodutivo  aOestrus synchronization  aPMS1 aKELLY, R. W.  tNew Zealand Journal of Agricultural Researchgv. 21, n. 3, p. 389-393, 1978.