03151naa a2200553 a 450000100080000000500110000800800410001902400360006010000310009624501510012726000090027852015930028765000110188065000110189165000090190265000140191165000140192565000190193965000170195865000190197565000170199465000100201165000170202165000110203865000100204965000170205965000190207665000240209565000270211965300110214665300210215765300140217865300250219265300190221765300280223665300160226465300180228065300160229865300200231470000270233470000210236170000210238270000200240370000220242370000200244570000220246570000200248777300900250720870242018-10-11       2018    bl uuuu     u00u1 u    #d7 a10.1007/s11250-017-1454-x.2DOI1 aALMEIDA, S. F. de C. M. de  aUse of two doses of cloprostenol in different intervals for estrus synchronization in hair sheep under tropical conditions.h[electronic resource]  c2018  aAbstract: This study evaluated the effect of two doses of prostaglandin at different intervals on reproductive parameters of crossbred ewes. In Experiment 1, 30 ewes received two doses of 120 ?g cloprostenol at 7 (G 7 days), 9 (G 9 days), or 11.5 (G 11.5 days) days apart. Ultrasound assessments were performed from the first and second cloprostenol administration for 5 days or ovulation detection. Estrus signs were checked by a teaser male. Plasma progesterone concentration was measured before each cloprostenol dose. In Experiment 2, 95 ewes were allocated into the same treatments and after the second dose, ewes in estrus were mated. At 30 days after breeding, pregnancy diagnosis was conducted and prolificacy was evaluated at lambing. In Experiment 1, at the first cloprostenol administration, 50% of ewes had an active CL and all showed estrus. At the second administration, 66.7% of ewes had an active CL and one did not present estrus. There was no difference (P &gt 0.05) after the second dose for as follows: overall estrous response (90%), interval from cloprostenol administration to estrous onset (42.0 ± 4.9 h), estrus duration (31.5 ± 2.1 h), ovulation rate (100.0%), and number of ovulations (1.5 ± 0.3). In Experiment 2, both pregnancy and prolificacy rates were similar (P &gt 0.05) for G 7 days (73.3; 145%), G 9 days (75.9; 125%), or G 11.5 days (75.9; 145%), leading to an overall pregnancy rate of 75.0% (66/88) and prolificacy rate of 137%. Therefore, the three treatments proposed were able to promote high pregnancy and prolificacy rates in crossbred ewes.  aBrazil  aDorper  aEwes  aOvulation  aPregnancy  apregnancy rate  aProgesterone  aProstaglandins  aReproduction  aSheep  aCiclo estral  aOvelha  aOvino  aProgesterona  aProstaglandina  aReprodução animal  aSincronização do cio  aBrasil  aBreeding seasons  aCyclicity  aIndigenous organisms  aOestrous cycle  aOestrus synchronization  aProlificacy  aProlificidade  aSanta Inês  aTaxa de prenhez1 aSOUZA-FABJAN, J. M. G.1 aBALARO, M. F. A.1 aBRAGANÇA, G. M.1 aPINTO, P. H. N.1 aALMEIDA, J. G. de1 aMOURA, A. B. B.1 aFONSECA, J. F. da1 aBRANDÃO, F. Z.  tTropical Animal Health and Production, Edinburghgv. 50, n. 2, p. 427-432, Feb. 2018.