dc.contributorUniversidade Estadual de Londrina (UEL)
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade de São Paulo (USP)
dc.contributorEmbryomass Inc
dc.date.accessioned2014-05-20T13:15:13Z
dc.date.available2014-05-20T13:15:13Z
dc.date.created2014-05-20T13:15:13Z
dc.date.issued2003-03-01
dc.identifierTheriogenology. New York: Elsevier B.V., v. 59, n. 5-6, p. 1435-1440, 2003.
dc.identifier0093-691X
dc.identifierhttp://hdl.handle.net/11449/2429
dc.identifier10.1016/S0093-691X(02)01188-3
dc.identifierWOS:000180645500032
dc.identifier2251116139872527
dc.description.abstractA new device was developed to hold linear transducers for transvaginal follicle aspiration. Efficacy of follicle aspiration was compared using a linear 6 MHz and a convex 5 MHz transducer. Fifty-five cows were submitted to follicle aspiration at random days of the estrous cycle. Aspirations were conducted with linear (n = 28) and convex (n = 38) transducers with 18 G needles at a negative pressure corresponding to 13 ml H2O/min. A greater number of follicles were aspirated using convex than to linear probe (12.4 versus 7.8, respectively, P < 0.05). Mean number of oocytes and recovery rates were similar for convex (5.4 and 48.6%) and linear (4.6 and 59.3%) transducers. Limited space between the linear transducer and needle guide restricted access to some portions of the ovary, reducing the number of follicles aspirated using a linear transducer. The newly developed adaptor allowed greater stability, holding the ovaries firmly against the linear transducer. This diminished mobility permitted a similar number of oocytes to be recovered with both transducers. In conclusion, this new adaptor provided a low cost alternative for routine follicle aspiration and oocyte recovery in cattle. (C) 2002 Elsevier B.V. All rights reserved.
dc.languageeng
dc.publisherElsevier B.V.
dc.relationTheriogenology
dc.relation2.136
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectultrasound
dc.subjectlinear transducer
dc.subjectoocytes
dc.titleEfficacy of linear and convex transducers for ultrasound-guided transvaginal follicle aspiration
dc.typeArtículos de revistas


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