autores
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Autores
Mostrando ítems 1-5 de 5
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7 & 7 Synch and 7-day progesterone- based protocols for estrus synchronization prior fixedtime artificial insemination in multiparous beef sucked cows
Ferre, Luis Bernardo; Jaeschke, Julian; Gatti, Juliana; Baladón, Gerardo; Bellocq, Ezequiel; Fernández, Gustavo; Thomas, Jordan M. (ICAR, 2022-06)Estrogen-based protocols combined with a progestinreleasing intravaginal device (P4RID) and prostaglandin (PG) synchronize follicle wave emergence prior to artificial insemination (AI) in Bos taurus, with pregnancies per ... -
Comparison of Gonadotropin-Releasing Hormone versus Estrogen-Based Fixed-Time Artificial Insemination Protocols in Grazing Bos taurus Suckled Beef Cows
Ferre, Luis Bernardo; Jaeschke, Julian; Gatti, Juliana; Baladón, Gerardo; Bellocq, Ezequiel; Fernández, Gustavo; Rearte, Ramiro; Kjelland, Michael E.; Colazo, Marcos G.; Thomas, Jordan M. (MDPI, 2023-09)Fixed-timed artificial insemination (FTAI) protocols for beef cattle in South America are primarily based on estradiol esters and intravaginal progesterone-releasing devices (IVPD). The objective of this study was to ... -
Evaluation of GnRH- versus estradiol-based protocols for ovulation synchronization in postpartum Bos taurus grazing beef cows submitted to fixed-time artificial insemination
Ferre, Luis Bernardo; Cerviño, Maria Natalia; Jaeschke, Julian; Itterman, Maximiliano; McLean, Jaime; Aragon, Agustin; Fernández, Manuel; Villa, Matías; Formia, Néstor; Jaureguiberry, Maria; Rearte, Ramiro; Kjelland, Michael E.; Colazo, Marcos G.; Thomas, Jordan M.; De la Sota, Rodolfo Luzbel (Elsevier, 2025-02)This study compared the effect of a 7-day estradiol- and a 7-day GnRH-based FTAI protocol versus a presynchronized GnRH-based FTAI protocol (7 & 7 GnRH) on pregnancy per AI (P/AI) in multiparous postpartum Angus cows. Cows ... -
Recent progress in bovine In vitro‐derived embryo cryotolerance: impact of In vitro culture systems, advances in cryopreservation and future considerations
Ferre, Luis Bernardo; Kjelland, M.E.; Taiyeb, A.M.; Campos‐Chillon, L.F.; Ross, Pablo J. (Wiley, 2020-03-07)Cryopreservation of in vitro‐derived bovine embryos is a crucial step for the widespread reproduction and conservation of valuable high merit animals. Given the current popularity of bovine in vitro embryo production (IVP), ... -
Transvaginal ultrasound-guided oocyte retrieval in cattle: state-of-the-art and its impact on the in vitro fertilization embryo production outcome
Ferre, Luis Bernardo; Alvarez-Gallardo, Horacio; Romo, Salvador; Fresno, Cristóbal; Stroud, Todd; Stroud, Brad; Lindsey, Brad; Kjelland, Michael E. (Wiley, 2022-12)Transvaginal ultrasound-guided oocyte retrieval (commonly called OPU) and in vitro embryo production (IVP) in cattle has shown significant progress in recent years, in part, as a result of a better understanding of the ...