01280naa a2200241 a 450000100080000000500110000800800410001910000190006024500890007926000090016852006260017765000210080365000180082465000210084265000170086365000100088065000170089065000140090765000100092165000170093170000170094877300730096515199512023-12-04       1966    bl uuuu     u00u1 u    #d1 aROBERTS, E. M.  aThe stimulation of fertile oestrus in anoestrous Romney ewes.h[electronic resource]  c1966  aAbstract: One hundred 6- and 7-year-old Romney ewes were treated for 13 days in January (mid-summer) with intra-vaginal sponges containing 40 mg of 6-methyl-17-acetoxyprogesterone (map). All ewes received 1000 i.u. pregnant mares serum gonadotrophin (pmsg) on the day of sponge removal and fifty ewes received a second 1000 i.u. pmsg 16 days later. The onset of oestrus was synchronized in both treatment groups and was apparently 2 weeks earlier than in twenty untreated ewes. Lambs born as percentage of ewes surviving was satisfactory in all groups being: one dose of pmsg, 94%; two doses of pmsg, 106%; controls 105%.  aAnimal fertility  aEstrous cycle  aFemale fertility  aReproduction  aSheep  aCiclo Estral  aIndução  aOvino  aReprodução1 aEDGAR, D. G.  tJournal of Reproduction and Fertilitygv. 2, n. 3, p. 565-567, 1966.