Doppler ultrasonography in sheep
Keywords:
Ovis aries, Corpus luteum, Blood flow, UltrasoundAbstract
The use of B-mode ultrasound technique, as a little invasive tool in animal reproduction, has undergone a significant evolution in research and practice. In farm animals, its use is practically concentrated on reproductive management. Although conventional B-mode ultrasonography has undergone technological advances, it does not allow access to organ function information, as demonstrated by vascular perfusion. In sheep, the study of the hemodynamics and functionality of the uterus, ovary and its structures can be useful to assess reproductive programs viability and, therefore, exhibit economic impact when using the color or pulsed (or spectral) modality of doppler ultrasound. Doppler ultrasonography is based on the Doppler effect in which the frequencies of the ultrasound beams reflected by the erythrocytes in motion vary as the cells move at different speeds. A lot of strategies have been presented using this technology, related to reproduction of sheep animals, in farm conditions. Applications are based on the evaluation of pregnancy, uterine hemodynamics, luteal functionality and responses to superovulation, among others. This work aimed to present aspects regarding to applications of spectral and color doppler ultrasound in sheep reproduction.
References
BELTRAME, R.T.; COVRE, C.; LITTIG, L.B.; MARTINS, A.B.; QUIRINO, C. R.; JUNIOR, BARTHOLAZZI. A.; COSTA, R. L. D. Transrectal Doppler sonography of uterine blood flow in ewes during pregnancy. Theriogenology, v.91, p.55-61, 2017. https://doi.org/ 10.1016/j.theriogenology.2016.12.026
BELTRAME, R.T.; LITTIG, L.B.; COVRE, C.; MARTINS, A.B.; QUIRINO, C.R.; COSTA, R.L.D. Automatic and manual doppler velocimetry measurements of the uterine artery in pregnant ewes. Animal Reproduction Science, v.181, p.103-107, 2017a. https://10.1016/ j.anireprosci.2017.03.021
BELTRAME, R.T; MORAIS JUNIOR, N.N.; CARETA, J.V.P.; RIBEIRO, A.P.; LIMA, T.A.D.; COSTA, R.L.D.; QUIRINO, C.R. Uterine hemodynamics during a short-term progesterone synchronization protocol in ewes. Tropical Animal Health and Production. v.51, p.1-7, 2019. https:// 10.1007/s11250-019-02035-5
COSENTINO, I.O.; BALARO, M.F.A.; ARASHIRO, E.K.N.; RODRIGUES SANTOS, J.D.; CARVALHO, A.B.S.; CLARIGET, R.P.; UNGERFELD, R.; BRANDÃO, F.Z. Hormonal protocols for early resynchronization of ovulation in ewes: The use of progestagens, eCG, and inclusion of early pregnancy diagnosis with color Doppler ultrasound. Theriogenology, v.133, p.113-118, 2019. https://doi.org/10.1016/j.theriogenology.2019.04.033
DAL, G.E.; ENGINLER, S.O.; CETIN, A.C.; BAYKAL, K.; SABUNCU, A. B-mode and Doppler Ultrasonographic Assessment of Uterine Involution in Ewes Treated with Two Different Doses of ProstaglandinF2α. Acta Scientiae Veterinariae, v.48, n.1765, 2020. http://dx.doi.org/10.22456/1679-9216.105041
DÍAZ, P.U.; BELOTTI, E.M.; NOTARO, U.S.; SALVETTI, N.R.; LEIVA, C.J.M.; DURANTE, L.I.; MARELLI, B.E.; STANGAFERRO, M.L.; ORTEGA, H.H. Hemodynamic changes detected by Doppler ultrasonography in the ovaries of cattle during early development of cystic ovarian disease. Animal Reproduction Science, v.209, p.106-164, 2019. https://doi.org/10.1016/j.anireprosci.2019.106164
ELMETWALLY, M.A. Uterine Blood Flow Indices in Sheep during Pregnancy. Quality in Primary Care, v.24, n.4, p.197-202, 2016.
ELMETWALLY, M.A.; TILLMANN, S.M. Simultaneous umbilical blood flow during normal pregnancy in sheep and goat foetuses using non-invasive colour Doppler ultrasound. Animal Reproduction, v.15, n.2, p.148-155, 2018.
ELMETWALLY, M.; ROHN, K.; MEINECKE-TILLMANN, S. Non-invasive color Doppler sonography of uterine blood flow throughout pregnancy in sheep and goats. Theriogenology, v.85, p.1070-1079, 2016. http://dx.doi.org/10.1016/j.theriogenology.2015.11.018
ERLER, M.F.; MÔNICO, I.Z.; SCHMITH, R.; PERIM, N.O.; PADOVANI NETO, E.; SOUZA, J.E.B.; MALEGONI, A.C.; MORAIS JUNIOR, N.N.; BELTRAME, R.T. Avaliação subjetiva do corpo lúteo no diagnóstico de gestação em ovelhas. Revista Brasileira de Reprodução Animal, v.43, n.2, p.516, 2019.
FELICIANO, M.A.R.; OLIVEIRA, M.E.F.; VICENTE, W.R.R. Ultrassongrafia na reprodução animal. 1ª ed., São Paulo: MedVet, 2014. 191p.
FONSECA, J.F.; OLIVEIRA, M.E.F.; BRANDÃO, F.Z.; RIBRIO, C.; BATISTA, I.T.P.; GARCIA, A.R.; BARTLEWSKI, P.M.; SOUZA-FABJAN, J.M.G. Non-surgical embryo transfer in goats and sheep: the Brazilian experience. Reproduction Fertility and Development, v.31, n.1, p.17-26, 2019.
GODDARD, P.J. Veterinary Ultrasonography. Wallingford: CABI, 1995. 352p.
GARCÍA, A.; NEARY, M.K.; KELLY, G.R.; PIERSON, R.A. Accuracy of ultrasonography in early pregnancy diagnosis in the ewe. Theriogenology, v.39, n.4, p.847-861, 1993.
GONZALEZ-BULNES, A.; SANTIAGO-MORENO, J.; GOMEZ-BRUNET, A.; LOPEZ-SEBASTIAN, A. Relationship between ultrasonographic assessment of the corpus luteum and plasma progesterone concentration during the oestrous cycle in monovular ewes. Reproduction in Domestic Animals, v.35, n.2, p.65–68, 2000.
HERZOG K.; BOLLWEIN H. Application of Doppler ultrasonography in cattle reproduction. Reproduction in Domestic Animals, v.42, Suppl 2, p.51-58, 2007.
LEMLEY, C.O.; BOWERS, K.J.; YANKEY, K.C.; TU, M.L.; HART, C.G.; STEADMAN, C.S.; MCCARTY, K.J.; OWEN, M.P.T. Investigating ovine placentome blood perfusion using power flow Doppler ultrasonography. Small Ruminant Research, v.184, n.106051, p.1-5, 2020. https://doi.org/10.1016/j.smallrumres.2020.106051
MEINECKE-TILLMANN, S., Basics of ultrasonographic examination in sheep. Small Ruminant Research, v.152, p.10-21, 2017.
MONICO, I.Z.; TRINDADE, K.R.; CARETA, J.V.P.; FAVARATO, R.; COLLATI, A.R.; MORAIS JUNIOR, N.N.; BELTRAME, R.T. Doppler colorido no 17o dia pós cobertura em ovelhas é efetivo para detectar fêmeas não gestantes. Revista Brasileira de Reprodução Animal, v.43, n.2, p.514-521, 2019.
PINTO, P.H.N.; BRAGANÇA, G.M.; BALARO, M.F.A.; ARASHIRO, E.K.N.; SANTOS, G.B.; SOUZA, G.N.; SOUZA-FABJAN, J.M.G.; FONSECA, J.F.; BRANDÃO, F.Z. Colour-Doppler ultrasound imaging as a laparoscopy substitute to count corpora lutea in superovulated sheep. Reproduction in Domestic Animals, v.5, n.1, p.266–269, 2017.
RODRIGUEZ, M.G.K.; MACIEL, G.S.; USCATEGUI, R.A.R.; CORREIA SANTOS, V.J.; NOCITI, R.P.; AGUILA DA SILVA, P.D.; FELICIANO, M.A.R.; BRANDÃO, F.Z.; FONSECA, J.F. Early luteal development in Santa Inês ewes superovulated with reduced doses of porcine follicle‐stimulating hormone. Reproduction in Domestic Animals, v.54, n.3, p.456–463, 2019.
