Review: Current status of corpus luteum assessment by Doppler ultrasonography to diagnose non-pregnancy and select embryo recipients in cattle.
| Autor: | Pugliesi G; Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga, SP 13635-900, Brazil. Electronic address: gpugliesi@usp.br., Guimarães da Silva A; Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga, SP 13635-900, Brazil., Viana JHM; Embrapa Recursos Genéticos e Biotecnologia, Brasília, DF 70770-190, Brazil., Siqueira LGB; Embrapa Gado de Leite, Juiz de Fora, MG 36038-330, Brazil. |
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| Jazyk: | angličtina |
| Zdroj: | Animal : an international journal of animal bioscience [Animal] 2023 May; Vol. 17 Suppl 1, pp. 100752. |
| DOI: | 10.1016/j.animal.2023.100752 |
| Abstrakt: | A number of potentials uses of Doppler ultrasonography have been explored in the last decades, both as research tools in reproductive physiology investigations and for the reproductive management of farm animals. The objective of this review was to address some of the recent strategies developed in fixed-time reproductive programs and resynchronization of ovulation in cattle, based on the evaluation of corpus luteum function by color-Doppler ultrasound imaging. Recent studies in dairy and beef cattle pointed out to a high accuracy when Doppler ultrasonography is used to assess the functionality of the corpus luteum and identify non-pregnant females at 20-24 days after breeding. Therefore, super-early resynchronization programs starting in the second week after timed-artificial insemination or embryo transfer have been developed and are being implemented in commercial assisted reproduction programs; thus, anticipating conception with proven semen or genetically superior embryos. In addition, assessment of corpus luteum blood perfusion can be used for identifying high fertility embryo recipients in fixed-time embryo transfer programs. (Copyright © 2023 The Authors. Published by Elsevier B.V. All rights reserved.) |
| Databáze: | MEDLINE |
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