02700naa a2200385 a 450000100080000000500110000800800410001902200140006002400430007410000150011724501270013226000090025950001340026852014340040265000290183665000100186565000230187565000190189865300090191765300180192665300290194465300280197365300100200165300190201165300180203065300290204865300330207765300340211070000120214470000170215670000130217370000170218670000240220377300870222710504682019-11-05       2014    bl uuuu     u00u1 u    #d  a0378-43207 a10.1016/j.anireprosci.2014.07.0092DOI1 aFIERRO, S.  aProtein supplementation during a short-interval prostaglandin-based protocol for timed AI in sheep.h[electronic resource]  c2014  aArticle history:Received 8 November 2013/Received in revised form 2 July 2014/Accepted 8 July 2014/Available online 18 July 2014.  aThe aim of this experiment was to improve the reproductive performance of a short-interval prostaglandin (PG)-based protocol for timed artificial insemination in sheep, using a short-term nutritional treatment. During the breeding season (March–April), 132 multiparous and 61 nulliparous Corriedale ewes grazing natural pastures (600 kg DM/ha, 8.5% CP), were allocated to two groups: 1, Control group (n = 100) two injections of D-Cloprostenol (75 ?g per dose, 7 d apart: Synchrovine® protocol); and 2, Supplemented group (n = 93) ewes in which stage of the oestrous cycle was synchronised with Synchrovine® protocol plus focus feeding of a protein supplement (33.8% CP) between PG doses (Day ?7 to ?2). Cervical AI was performed at fixed time (Day 0), 46 ± 1.0 h after the second PG injection using 150 million sperm per ewe. Ovulation rate (Day 10), pregnancy rate, prolificacy and fecundity at Day 69 were evaluated by ultrasonography. Ovulation rate at Day 10 (1.20 ± 0.05 vs. 1.22 ± 0.05), pregnancy (46 ± 0.05 vs. 56 ± 0.05), prolificacy (1.09 ± 0.04 vs. 1.06 ± 0.05), and fecundity (0.49 ± 0.06 vs. 0.59 ± 0.06) at Day 69, were similar between groups (P > 0.05; Control and Supplemented group respectively). It is concluded that focus feeding for 6 d with protein supplementation during a short-interval PG-based protocol (Synchrovine®) did not improve the reproductive outcome associated with this protocol.  aINSEMINACIÓN ARTIFICIAL  aOVEJA  aREPRODUCCION OVINA  aSUPLEMENTACION  aEWES  aFOCUS FEEDING  aINSEMINACIÓN ARTIFICIAL  aOESTRUS SYNCHRONISATION  aOVEJA  aOVULATION RATE  aPROSTAGLANDIN  aSUPLEMENTACIÓN PROTEICA  aTIMED ARTIFICIAL INEMINATION  aTIMED ARTIFICIAL INSEMINATION1 aGIL, J.1 aVIÑOLES, C.1 aSOCA, F.1 aBANCHERO, G.1 aOLIVERA-MUSANTE, J.  tAnimal Reproduction Science, october 2014, Volume 149, Issues 3?4,  Pages 158-162.