Ultrasound monitoring of blood flow and echotexture of the corpus luteum and uterus during early pregnancy of beef heifers

Scully, S.; Evans, A.C.O.; Carter, F.; Duffy, Patrick E.; Lonergan, P.; Crowe, M.A.

doi:10.1016/j.theriogenology.2014.10.009

Cited by 54 publications

(46 citation statements)

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“…Invariably, these observations suggested that early or late embryonic mortality in non-pregnant buffalo could be due to luteal inadequacy (Campanile et al, 2005;Grimard et al, 2006). Others have also found greater plasma progesterone in pregnant as compared to non-pregnant cattle (Scully et al, 2015).…”

Section: Discussionmentioning

confidence: 95%

Impact of buserelin acetate or hCG administration on day 5 post-ovulation on subsequent luteal profile and conception rate in Murrah buffalo (Bubalus bubalis)

Pandey

Dhaliwal

Ghuman

et al. 2015

Animal Reproduction Science

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Section: Discussionmentioning

confidence: 95%

Impact of buserelin acetate or hCG administration on day 5 post-ovulation on subsequent luteal profile and conception rate in Murrah buffalo (Bubalus bubalis)

Pandey

Dhaliwal

Ghuman

et al. 2015

Animal Reproduction Science

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“…In animal reproduction, computer-assisted image analysis has been used for the evaluation of CL, follicle, and uterine echotexture (Singh et al, 2003;Siqueira et al, 2009;Scully et al, 2015). Studies show that CL echotexture, for example, is associated with luteal tissue area (Singh et al, 1997), and reflect luteal function throughout the estrous cycle (Singh et al, 1997;Tom et al, 1998;Siqueira et al, 2009).…”

Section: Emerging Technologies: Computer-assisted Image Analysis and mentioning

confidence: 99%

Current Status, Emerging Technologies, and Trends in Veterinary Ultrasonography Applied to Cattle Reproduction

Viana¹,

Siqueira²

2017

SPERMOVA

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The B-mode and color Doppler ultrasonography provide a safe, non-invasive, real-time approach to assess reproductive tissues and organs in female cattle, and thus have a number of potential uses in reproductive management. On the ovary, antral follicle population can be counted, and follicular growth, regression and ovulation can be monitored during sequential exams. The corpus luteum can be identified, and evaluated according to size, echotexture, and vascularization. Ultrasonography allows an early diagnosis of pregnancy based in the detection of the embryonic vesicle from day 24 of gestation. Alternatively, non-pregnancy can be indirectly inferred according to corpus luteum vascularization 20 days after insemination. Embryo and fetus morphology and vital signs can monitored throughout gestation, and fetal sex can be determined by the visualization of the relative position of the genital tubercle. In addition, a range of pathologic conditions of the ovary and uterus can be diagnosed based on sonographic images. The use of ultrasonography was also key for the development of many assisted reproductive technologies, such as timed artificial insemination, modern superovulation protocols, procedures for the recovery of cumulus-oocyte complexes aiming in vitro embryo production, and is a valuable tool for the selection and management of embryo recipients. In the future, emerging technologies such as computer-assisted image analysis, 3D ultrasonography, and 3D modeling have the potential to improve the accuracy of sonographic diagnosis, or even create new potential uses for ultrasonography in animal reproduction.Keywords: 3D ultrasound, bovine, color Doppler, pregnancy diagnosis, reproductive biotechnologies RESUMEN La ecografía de modo B y dopler color proporciona un enfoque seguro, no invasivo y en tiempo real para evaluar tejidos y órganos reproductivos en vacas, por lo tanto, tiene una serie de usos potenciales en el manejo reproductivo. En el ovario, se puede realizar el conteo de la población de folículos antrales, y realizar el seguimiento del crecimiento folicular, la regresión y la ovulación durante monitoreo secuencial. El cuerpo lúteo puede ser identificado y evaluarse según el tamaño, ecotextura y vascularización. La ecografía permite un diagnóstico precoz de la preñez basado en la detección de la vesícula embrionaria desde el día 24 de la gestación. Alternativamente, la ño preñez puede inferirse indirectamente de acuerdo con la vascularización del cuerpo lúteo a los 20 días después de la inseminación. La morfología y los signos vitales del embrión y del feto pueden monitorearse durante toda la gestación, y el sexo del feto puede determinarse mediante la visualización de la posición relativa del tubérculo genital. Además, se puede diagnosticar una variedad de condiciones patológicas del ovario y el útero según las imágenes ecográficas. El uso de ultrasonografía también fue clave para el desarrollo de muchas tecnologías de reproducción asistida, como la inseminación artificial a tiempo fijo, los pr...

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“…Detection of luteolysis using Doppler ultrasonography can be used to identify nonpregnant cattle as early as day 15, but better accuracy for the determination of pregnant cattle is achieved between days 18 and 21 (Siqueira et al 2013 ;Pugliesi et al 2014 ;Scully et al 2015 ). While CL blood fl ow is an indirect measure of CL viability and serum concentrations of progesterone, it is an indirect measure that a viable embryo is present and maternal recognition of pregnancy has occurred.…”

Section: Use Of Steroids To Detect Pregnancymentioning

confidence: 99%

Predicting Embryo Presence and Viability

Pohler

Green

Geary

et al. 2015

Regulation of Implantation and Establishment of Pregnancy in Mammals

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Pregnancy establishment, followed by birth of live offspring, is essential to all mammals. The biological processes leading up to pregnancy establishment, maintenance, and birth are complex and dependent on the coordinated timing of a series of events at the molecular, cellular, and physiological level. The ability to ovulate a competent oocyte, which is capable of undergoing fertilization, is only the initial step in achieving a successful pregnancy. Once fertilization has occurred and early embryonic development is initiated, early pregnancy detection is critical to provide proper prenatal care (humans) or appropriate management (domestic livestock). However, the simple presence of an embryo, early in gestation, does not guarantee the birth of a live offspring. Pregnancy loss (embryonic mortality, spontaneous abortions, etc.) has been well documented in all mammals, especially in humans and domestic livestock species, and is a major cause of reproductive loss. It has been estimated that only about 25-30% of all fertilized oocytes in humans result in birth of a live offspring; however, identifying the embryos that will not survive to parturition has not been an easy task. Therefore, investigators have focused the identification of products in maternal circulation that permit the detection of an embryo and assessment of its well-being. This review will focus on the advances in predicting embryonic presence and viability, in vivo.

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Ultrasound monitoring of blood flow and echotexture of the corpus luteum and uterus during early pregnancy of beef heifers

Cited by 54 publications

References 50 publications

Impact of buserelin acetate or hCG administration on day 5 post-ovulation on subsequent luteal profile and conception rate in Murrah buffalo (Bubalus bubalis)

Impact of buserelin acetate or hCG administration on day 5 post-ovulation on subsequent luteal profile and conception rate in Murrah buffalo (Bubalus bubalis)

Current Status, Emerging Technologies, and Trends in Veterinary Ultrasonography Applied to Cattle Reproduction

Predicting Embryo Presence and Viability

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