02501nam a2200397 a 450000100080000000500110000800800410001910000180006024501900007826002380026852011680050665000240167465000140169865000160171265000170172865000200174565000110176565000090177665000230178565000100180865000140181865000100183265000240184265000310186665300170189765300220191465300080193665300150194465300250195970000200198470000190200470000180202370000200204170000200206170000220208120951172019-09-23       2018    bl uuuu     u00u1 u    #d1 aARRAIS, A. M.  aAdministration of hCG on the seventh day after initiation of estrus may circumvent negative effects of cervical relaxation protocol in sheepbPreliminary results.h[electronic resource]  aAnimal Reprodroduction, v. 15, n. 3, p. 388, Jul./Sept. 2018. Abstract A073. Edição dos Proceedings of the 32nd Annual Meeting of the Brazilian Embryo Technology Society (SBTE); Florianópolis, SC, Brazil, August 16th to 18thc2018  aCervical relaxation with association of estradiol benzoate, cloprostenol and oxytocin allows a cervical transposition and embryo collection in sheep by the non-surgical method (Fonseca et al., Theriogenology, 86: 144-151, 2016). However, in recipients, the use of this protocol becomes impracticable due to the use of cloprostenol, which is a luteolytic agent. Sheep are known to form accessory luteal bodies after hCG administration seven days after the onset of estrus (Castro et al., Anim. Reprod., 12: 148, 2015). Therefore, the objective of this study was to develop a cervical relaxation protocol in embryo recipient ewes without compromising future gestation. The data were presented in a descriptive way. Thirteen ewes were observed in estrus out of 24 females submitted to the synchronization protocol. The pregnancy rate were 75.0% (3/4) in G1, 0.0% in G2 (0/5) and 50.0% in G3 (2/4). Preliminary results suggest that the association of estradiol benzoate and oxytocin may compromise the onset of pregnancy and that the use of hCG at the end of the protocol in D7 can circumvent partially these negative effects, allowing the establishment of pregnancy.  aAnimal reproduction  aBenzoates  aBody weight  aCloprostenol  aEmbryo transfer  aEstrus  aEwes  aOxytocin receptors  aSheep  aEstradiol  aOvino  aReprodução Animal  aTransferência de Embrião  aDrug effects  aEmbryo collection  aHCG  aOestrogens  aRelaxamento cervical1 aMELLO, M. R. B.1 aCORTÊS, L. R.1 aBONATO, G. C.1 aOLIVEIRA, T. A.1 aCARVALHO, B. P.1 aFONSECA, J. F. da