Evaluation of GnRH- versus estradiol-based protocols for ovulation synchronization in postpartum Bos taurus grazing beef cows submitted to fixed-time artificial insemination
- Autores
- 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
- Año de publicación
- 2025
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- 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 were blocked according to presence/absence of a CL, body condition score, and days postpartum and assigned randomly to one of three treatments: I) 7-day EB (n = 368), estradiol benzoate (EB) and intravaginal progesterone-(P4)-releasing device (IVPD) on Day −10, prostaglandin F2α (PG), equine chorionic gonadotropin (eCG) and estradiol cypionate (ECP) at IVPD removal on Day −3 with FTAI done on Day −1 (54 ± 2 h after IVPD removal); II) 7-day GnRH (n = 367), GnRH at IVPD insertion on Day −10, PG and eCG at IVPD removal on Day −3 with GnRH and FTAI on Day 0 (66 ± 2 h after IVPD removal); and III) 7 & 7 GnRH (n = 361), PG at IVPD insertion on Day −17, GnRH on Day −10, IVPD removal, PG and eCG on Day −3 with GnRH and FTAI on Day 0 (66 ± 2 h after IVPD removal). Preovulatory follicle diameter, corpus luteum (CL) presence, CL area, and P4 concentration were determined at IVPD removal, as well as estrus expression at FTAI and P/AI between 35 and 40 days after FTAI. Plasma P4 concentrations at IVPD removal were greater (P < 0.05) in cows subjected to the 7-day GnRH or 7 & 7 GnRH protocols and a greater number of cows (P < 0.05) had at least one CL at IVPD removal compared to cows subjected to the 7-day EB protocol. However, the 7 & 7 GnRH protocol resulted in more cows with two CLs at IVPD removal compared to the other two protocols. Moreover, cows synchronized with the 7 & 7 GnRH protocol had larger preovulatory follicles (P < 0.05) and larger CL area at IVPD removal (P < 0.05), and a greater rate of estrus expression before FTAI (P < 0.05) than cows synchronized with the 7-day EB, whereas those variables were intermediate in cows synchronized with the 7-day GnRH. Pregnancy per AI was greater (P < 0.05) in cows treated with the 7 & 7 GnRH (63.5 %) treatment compared to the 7-day EB (51.4 %) and the 7-day GnRH (51.3 %) protocols. In summary, the 7 & 7 GnRH protocol enhanced circulating P4 before IVPD removal, increased estrus expression rate before FTAI, and improved P/AI in postpartum Bos taurus grazing beef cows.
EEA Barrow
Fil: Ferre, Luis Bernardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Barrow; Argentina
Fil: Cerviño, Maria Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Jaeschke, J. Biogénesis Bagó; Argentina.
Fil: Itterman, Maximiliano. Biogénesis Bagó; Argentina.
Fil: McLean, Jaime. Estudio McLean Producción & Reproducción Bovina; Argentina
Fil: Aragon, Agustin. Estudio McLean Producción & Reproducción Bovina; Argentina
Fil: Fernández, Manuel. Estudio McLean Producción & Reproducción Bovina; Argentina
Fil: Villa, Matías. Estudio McLean Producción & Reproducción Bovina; Argentina
Fil: Formia, Néstor. Universidad Nacional de la Plata. Facultad de Ciencias Veterinarias. Instituto de Investigaciones en Reproducción Animal (INIRA); Argentina
Fil: Jaureguiberry, Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Jaureguiberry, Maria. Universidad Nacional de la Plata. Facultad de Ciencias Veterinarias. Instituto de Investigaciones en Reproducción Animal (INIRA); Argentina
Fil: Rearte, Ramiro. Universidad Nacional de la Plata. Facultad de Ciencias Veterinarias. Instituto de Investigaciones en Reproducción Animal (INIRA); Argentina
Fil: Kjelland, M.E. Mayville State University; Estados Unidos
Fil: Colazo, Marcos G. Leduc Farm Animal Hospital; Canadá
Fil: Thomas, J. University of Missouri. Division of Animal Sciences; Estados Unidos
Fil: de la Sota, R.L. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: de la Sota, R.L. Universidad Nacional de la Plata. Facultad de Ciencias Veterinarias. Instituto de Investigaciones en Reproducción Animal (INIRA); Argentina - Fuente
- Theriogenology 233 : 1-7. (February 2025)
- Materia
-
Bos taurus
Beef Cattle
Oestrus Synchronization
Perinatal Period
Estradiol
GnRH
Artificial Insemination
Ganado de Carne
Sincronización del Celo
Período Perinatal
Inseminación Artificial - Nivel de accesibilidad
- acceso restringido
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Instituto Nacional de Tecnología Agropecuaria
- OAI Identificador
- oai:localhost:20.500.12123/20800
Ver los metadatos del registro completo
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Evaluation of GnRH- versus estradiol-based protocols for ovulation synchronization in postpartum Bos taurus grazing beef cows submitted to fixed-time artificial inseminationFerre, Luis BernardoCerviño, Maria NataliaJaeschke, JulianItterman, MaximilianoMcLean, JaimeAragon, AgustinFernández, ManuelVilla, MatíasFormia, NéstorJaureguiberry, MariaRearte, RamiroKjelland, Michael E.Colazo, Marcos G.Thomas, Jordan M.De la Sota, Rodolfo LuzbelBos taurusBeef CattleOestrus SynchronizationPerinatal PeriodEstradiolGnRHArtificial InseminationGanado de CarneSincronización del CeloPeríodo PerinatalInseminación ArtificialThis 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 were blocked according to presence/absence of a CL, body condition score, and days postpartum and assigned randomly to one of three treatments: I) 7-day EB (n = 368), estradiol benzoate (EB) and intravaginal progesterone-(P4)-releasing device (IVPD) on Day −10, prostaglandin F2α (PG), equine chorionic gonadotropin (eCG) and estradiol cypionate (ECP) at IVPD removal on Day −3 with FTAI done on Day −1 (54 ± 2 h after IVPD removal); II) 7-day GnRH (n = 367), GnRH at IVPD insertion on Day −10, PG and eCG at IVPD removal on Day −3 with GnRH and FTAI on Day 0 (66 ± 2 h after IVPD removal); and III) 7 & 7 GnRH (n = 361), PG at IVPD insertion on Day −17, GnRH on Day −10, IVPD removal, PG and eCG on Day −3 with GnRH and FTAI on Day 0 (66 ± 2 h after IVPD removal). Preovulatory follicle diameter, corpus luteum (CL) presence, CL area, and P4 concentration were determined at IVPD removal, as well as estrus expression at FTAI and P/AI between 35 and 40 days after FTAI. Plasma P4 concentrations at IVPD removal were greater (P < 0.05) in cows subjected to the 7-day GnRH or 7 & 7 GnRH protocols and a greater number of cows (P < 0.05) had at least one CL at IVPD removal compared to cows subjected to the 7-day EB protocol. However, the 7 & 7 GnRH protocol resulted in more cows with two CLs at IVPD removal compared to the other two protocols. Moreover, cows synchronized with the 7 & 7 GnRH protocol had larger preovulatory follicles (P < 0.05) and larger CL area at IVPD removal (P < 0.05), and a greater rate of estrus expression before FTAI (P < 0.05) than cows synchronized with the 7-day EB, whereas those variables were intermediate in cows synchronized with the 7-day GnRH. Pregnancy per AI was greater (P < 0.05) in cows treated with the 7 & 7 GnRH (63.5 %) treatment compared to the 7-day EB (51.4 %) and the 7-day GnRH (51.3 %) protocols. In summary, the 7 & 7 GnRH protocol enhanced circulating P4 before IVPD removal, increased estrus expression rate before FTAI, and improved P/AI in postpartum Bos taurus grazing beef cows.EEA BarrowFil: Ferre, Luis Bernardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Barrow; ArgentinaFil: Cerviño, Maria Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Jaeschke, J. Biogénesis Bagó; Argentina.Fil: Itterman, Maximiliano. Biogénesis Bagó; Argentina.Fil: McLean, Jaime. Estudio McLean Producción & Reproducción Bovina; ArgentinaFil: Aragon, Agustin. Estudio McLean Producción & Reproducción Bovina; ArgentinaFil: Fernández, Manuel. Estudio McLean Producción & Reproducción Bovina; ArgentinaFil: Villa, Matías. Estudio McLean Producción & Reproducción Bovina; ArgentinaFil: Formia, Néstor. Universidad Nacional de la Plata. Facultad de Ciencias Veterinarias. Instituto de Investigaciones en Reproducción Animal (INIRA); ArgentinaFil: Jaureguiberry, Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Jaureguiberry, Maria. Universidad Nacional de la Plata. Facultad de Ciencias Veterinarias. Instituto de Investigaciones en Reproducción Animal (INIRA); ArgentinaFil: Rearte, Ramiro. Universidad Nacional de la Plata. Facultad de Ciencias Veterinarias. Instituto de Investigaciones en Reproducción Animal (INIRA); ArgentinaFil: Kjelland, M.E. Mayville State University; Estados UnidosFil: Colazo, Marcos G. Leduc Farm Animal Hospital; CanadáFil: Thomas, J. University of Missouri. Division of Animal Sciences; Estados UnidosFil: de la Sota, R.L. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: de la Sota, R.L. Universidad Nacional de la Plata. Facultad de Ciencias Veterinarias. Instituto de Investigaciones en Reproducción Animal (INIRA); ArgentinaElsevier2025-01-02T10:34:52Z2025-01-02T10:34:52Z2025-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/20800https://www.sciencedirect.com/science/article/abs/pii/S0093691X240046180093-691X1879-3231https://doi.org/10.1016/j.theriogenology.2024.11.008Theriogenology 233 : 1-7. (February 2025)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-09-18T10:09:53Zoai:localhost:20.500.12123/20800instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-18 10:09:53.521INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse |
| dc.title.none.fl_str_mv |
Evaluation of GnRH- versus estradiol-based protocols for ovulation synchronization in postpartum Bos taurus grazing beef cows submitted to fixed-time artificial insemination |
| title |
Evaluation of GnRH- versus estradiol-based protocols for ovulation synchronization in postpartum Bos taurus grazing beef cows submitted to fixed-time artificial insemination |
| spellingShingle |
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 Bos taurus Beef Cattle Oestrus Synchronization Perinatal Period Estradiol GnRH Artificial Insemination Ganado de Carne Sincronización del Celo Período Perinatal Inseminación Artificial |
| title_short |
Evaluation of GnRH- versus estradiol-based protocols for ovulation synchronization in postpartum Bos taurus grazing beef cows submitted to fixed-time artificial insemination |
| title_full |
Evaluation of GnRH- versus estradiol-based protocols for ovulation synchronization in postpartum Bos taurus grazing beef cows submitted to fixed-time artificial insemination |
| title_fullStr |
Evaluation of GnRH- versus estradiol-based protocols for ovulation synchronization in postpartum Bos taurus grazing beef cows submitted to fixed-time artificial insemination |
| title_full_unstemmed |
Evaluation of GnRH- versus estradiol-based protocols for ovulation synchronization in postpartum Bos taurus grazing beef cows submitted to fixed-time artificial insemination |
| title_sort |
Evaluation of GnRH- versus estradiol-based protocols for ovulation synchronization in postpartum Bos taurus grazing beef cows submitted to fixed-time artificial insemination |
| dc.creator.none.fl_str_mv |
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 |
| author |
Ferre, Luis Bernardo |
| author_facet |
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 |
| author_role |
author |
| author2 |
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 |
| author2_role |
author author author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Bos taurus Beef Cattle Oestrus Synchronization Perinatal Period Estradiol GnRH Artificial Insemination Ganado de Carne Sincronización del Celo Período Perinatal Inseminación Artificial |
| topic |
Bos taurus Beef Cattle Oestrus Synchronization Perinatal Period Estradiol GnRH Artificial Insemination Ganado de Carne Sincronización del Celo Período Perinatal Inseminación Artificial |
| dc.description.none.fl_txt_mv |
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 were blocked according to presence/absence of a CL, body condition score, and days postpartum and assigned randomly to one of three treatments: I) 7-day EB (n = 368), estradiol benzoate (EB) and intravaginal progesterone-(P4)-releasing device (IVPD) on Day −10, prostaglandin F2α (PG), equine chorionic gonadotropin (eCG) and estradiol cypionate (ECP) at IVPD removal on Day −3 with FTAI done on Day −1 (54 ± 2 h after IVPD removal); II) 7-day GnRH (n = 367), GnRH at IVPD insertion on Day −10, PG and eCG at IVPD removal on Day −3 with GnRH and FTAI on Day 0 (66 ± 2 h after IVPD removal); and III) 7 & 7 GnRH (n = 361), PG at IVPD insertion on Day −17, GnRH on Day −10, IVPD removal, PG and eCG on Day −3 with GnRH and FTAI on Day 0 (66 ± 2 h after IVPD removal). Preovulatory follicle diameter, corpus luteum (CL) presence, CL area, and P4 concentration were determined at IVPD removal, as well as estrus expression at FTAI and P/AI between 35 and 40 days after FTAI. Plasma P4 concentrations at IVPD removal were greater (P < 0.05) in cows subjected to the 7-day GnRH or 7 & 7 GnRH protocols and a greater number of cows (P < 0.05) had at least one CL at IVPD removal compared to cows subjected to the 7-day EB protocol. However, the 7 & 7 GnRH protocol resulted in more cows with two CLs at IVPD removal compared to the other two protocols. Moreover, cows synchronized with the 7 & 7 GnRH protocol had larger preovulatory follicles (P < 0.05) and larger CL area at IVPD removal (P < 0.05), and a greater rate of estrus expression before FTAI (P < 0.05) than cows synchronized with the 7-day EB, whereas those variables were intermediate in cows synchronized with the 7-day GnRH. Pregnancy per AI was greater (P < 0.05) in cows treated with the 7 & 7 GnRH (63.5 %) treatment compared to the 7-day EB (51.4 %) and the 7-day GnRH (51.3 %) protocols. In summary, the 7 & 7 GnRH protocol enhanced circulating P4 before IVPD removal, increased estrus expression rate before FTAI, and improved P/AI in postpartum Bos taurus grazing beef cows. EEA Barrow Fil: Ferre, Luis Bernardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Barrow; Argentina Fil: Cerviño, Maria Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Jaeschke, J. Biogénesis Bagó; Argentina. Fil: Itterman, Maximiliano. Biogénesis Bagó; Argentina. Fil: McLean, Jaime. Estudio McLean Producción & Reproducción Bovina; Argentina Fil: Aragon, Agustin. Estudio McLean Producción & Reproducción Bovina; Argentina Fil: Fernández, Manuel. Estudio McLean Producción & Reproducción Bovina; Argentina Fil: Villa, Matías. Estudio McLean Producción & Reproducción Bovina; Argentina Fil: Formia, Néstor. Universidad Nacional de la Plata. Facultad de Ciencias Veterinarias. Instituto de Investigaciones en Reproducción Animal (INIRA); Argentina Fil: Jaureguiberry, Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Jaureguiberry, Maria. Universidad Nacional de la Plata. Facultad de Ciencias Veterinarias. Instituto de Investigaciones en Reproducción Animal (INIRA); Argentina Fil: Rearte, Ramiro. Universidad Nacional de la Plata. Facultad de Ciencias Veterinarias. Instituto de Investigaciones en Reproducción Animal (INIRA); Argentina Fil: Kjelland, M.E. Mayville State University; Estados Unidos Fil: Colazo, Marcos G. Leduc Farm Animal Hospital; Canadá Fil: Thomas, J. University of Missouri. Division of Animal Sciences; Estados Unidos Fil: de la Sota, R.L. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: de la Sota, R.L. Universidad Nacional de la Plata. Facultad de Ciencias Veterinarias. Instituto de Investigaciones en Reproducción Animal (INIRA); Argentina |
| description |
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 were blocked according to presence/absence of a CL, body condition score, and days postpartum and assigned randomly to one of three treatments: I) 7-day EB (n = 368), estradiol benzoate (EB) and intravaginal progesterone-(P4)-releasing device (IVPD) on Day −10, prostaglandin F2α (PG), equine chorionic gonadotropin (eCG) and estradiol cypionate (ECP) at IVPD removal on Day −3 with FTAI done on Day −1 (54 ± 2 h after IVPD removal); II) 7-day GnRH (n = 367), GnRH at IVPD insertion on Day −10, PG and eCG at IVPD removal on Day −3 with GnRH and FTAI on Day 0 (66 ± 2 h after IVPD removal); and III) 7 & 7 GnRH (n = 361), PG at IVPD insertion on Day −17, GnRH on Day −10, IVPD removal, PG and eCG on Day −3 with GnRH and FTAI on Day 0 (66 ± 2 h after IVPD removal). Preovulatory follicle diameter, corpus luteum (CL) presence, CL area, and P4 concentration were determined at IVPD removal, as well as estrus expression at FTAI and P/AI between 35 and 40 days after FTAI. Plasma P4 concentrations at IVPD removal were greater (P < 0.05) in cows subjected to the 7-day GnRH or 7 & 7 GnRH protocols and a greater number of cows (P < 0.05) had at least one CL at IVPD removal compared to cows subjected to the 7-day EB protocol. However, the 7 & 7 GnRH protocol resulted in more cows with two CLs at IVPD removal compared to the other two protocols. Moreover, cows synchronized with the 7 & 7 GnRH protocol had larger preovulatory follicles (P < 0.05) and larger CL area at IVPD removal (P < 0.05), and a greater rate of estrus expression before FTAI (P < 0.05) than cows synchronized with the 7-day EB, whereas those variables were intermediate in cows synchronized with the 7-day GnRH. Pregnancy per AI was greater (P < 0.05) in cows treated with the 7 & 7 GnRH (63.5 %) treatment compared to the 7-day EB (51.4 %) and the 7-day GnRH (51.3 %) protocols. In summary, the 7 & 7 GnRH protocol enhanced circulating P4 before IVPD removal, increased estrus expression rate before FTAI, and improved P/AI in postpartum Bos taurus grazing beef cows. |
| publishDate |
2025 |
| dc.date.none.fl_str_mv |
2025-01-02T10:34:52Z 2025-01-02T10:34:52Z 2025-02 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/20.500.12123/20800 https://www.sciencedirect.com/science/article/abs/pii/S0093691X24004618 0093-691X 1879-3231 https://doi.org/10.1016/j.theriogenology.2024.11.008 |
| url |
http://hdl.handle.net/20.500.12123/20800 https://www.sciencedirect.com/science/article/abs/pii/S0093691X24004618 https://doi.org/10.1016/j.theriogenology.2024.11.008 |
| identifier_str_mv |
0093-691X 1879-3231 |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/restrictedAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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restrictedAccess |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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application/pdf |
| dc.publisher.none.fl_str_mv |
Elsevier |
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Elsevier |
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Theriogenology 233 : 1-7. (February 2025) reponame:INTA Digital (INTA) instname:Instituto Nacional de Tecnología Agropecuaria |
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INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria |
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tripaldi.nicolas@inta.gob.ar |
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