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Registros recuperados : 28 | |
1. | | MENCHACA, A. Assisted Reproductive Technologies (ART) and genome editing to support a sustainable livestock. Thematic Section: 36th Annual Meeting of the Brazilian Embryo Technology Society (SBTE). Animal Reproduction, 2023, Volume 20, Issue 2, e20230074. http://dx.doi.org/10.1590/1984-3143-AR2023-0074 -- OPEN ACCESS. Article history: Received May 26, 2023; Accepted July 21, 2023. -- Document type: Article Gold Open Access, Green Open Access. -- Correspondence: Menchaca, A.; Plataforma de Salud Animal, Instituto Nacional de Investigación...Biblioteca(s): INIA Las Brujas. |
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3. | | MENCHACA, A. Sustainable food production: The contribution of genome editing in livestock. Sustainability (Switzerland), June 2021, volume 13, Issue 122, article 6788. OPEN ACCESS. Doi: https://doi.org/10.3390/su13126788 Article history: Received 16 March 2021; Revised 31 May 2021; Accepted 1 June 2021; Published 16 June 2021.
Academic Editor: Gerhart U. Ryffel.
This article belongs to the Special Issue Genome Editing in Animal System to Support...Biblioteca(s): INIA Las Brujas. |
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4. | | BÓ, G.A.; MENCHACA, A. Prohibition of hormones in animal reproduction: what to expect and what to do?. Thematic Section: 36th Annual Meeting of the Brazilian Embryo Technology Society (SBTE). Animal Reproduction, 2023, Volume 20, Issue 2, e20230067. https://doi.org/10.1590/1984-3143-AR2023-0067 -- OPEN ACCESS. Article history: Received May 15, 2023; Accepted: July 18, 2023. -- Financial support: GAB received funding for this research from Fondo Nacional de Ciencia y Tecnología (FONCYT PICT 2017-4550), Instituto de Investigación Universidad...Biblioteca(s): INIA Las Brujas. |
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8. | | GARCÍA PINTOS, C.; RIET-CORREA, F.; MENCHACA, A. Effect of foot-and-mouth disease vaccine on pregnancy failure in beef cows. Frontiers in Veterinary Science, November 2021, volume 8, Article number 761304. Open Access. doi: https://doi.org/10.3389/fvets.2021.761304 Article history: Received 19 August 2021; Accepted 18 October 2021; Published 12 November 2021.
Corresponding author: Menchaca, A.; Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay;...Biblioteca(s): INIA Las Brujas. |
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13. | | KALDS, P.; CRISPO, M.; TESSON, L.; ANEGÓN, I.; CHEN KEY, Y.; WANG, X.; MENCHACA, A. Generation of Double-Muscled Sheep and Goats by CRISPR /Cas9-Mediated Knockout of the Myostatin Gene. Chapter 16. Methods in Molecular Biology, 2022, Volume 2495, Pages 295-323. Doi: https://doi.org/10.1007/978-1-0716-2301-5_16Biblioteca(s): INIA La Estanzuela. |
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15. | | NOVAS, R.; BASIKA, T.; WILLIAMSON, M. E.; FRESIA, P.; MENCHACA, A.; SCOTT, M. J. Identification and functional analysis of Cochliomyia hominivorax U6 gene promoters. Insect Molecular Biology, 2023. Early View. https://doi.org/10.1111/imb.12875 -- OPEN ACCESS. Article history: Received 9 March 2023, Accepted 4 August 2023, First published 21 September 2023. -- Scott, M.J.; Department of Entomology and Plant Pathology, North Carolina State University, Campus Box 7613, Raleigh, NC, United...Biblioteca(s): INIA Las Brujas. |
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19. | | DOS SANTOS-NETO, P.C.; CUADRO, F.; SOUZA-NEVES, M.; CRISPO, M.; MENCHACA, A. Refinements in embryo manipulation applied to CRISPR technology in livestock. Theriogenology. 2023, Volume 208, Pages 142-148. https://doi.org/10.1016/j.theriogenology.2023.05.028 Article history: Received 14 April 2023; Received in revised form 29 May 2023; Accepted 29 May 2023; Available online 9 June 2023. -- Correspondence author: Menchaca, A.; Instituto de Reproducción Animal Uruguay, Fundación IRAUy,...Biblioteca(s): INIA Las Brujas. |
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20. | | CUADRO, F.; DE BRUN, V.; BROCHADO, C.; SOUZA, M.; GARCÍA PINTOS, C.; MENEZES, C.; GASTAL, G.D.A.; MENCHACA, A. Gene expression patterns in uterus and oviduct during the preovulatory period in ewes. In: 19th International Congress on Animal Reproduction (ICAR), Bologna (Italy), 26-30 June 2022. p.185.Biblioteca(s): INIA La Estanzuela. |
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Registros recuperados : 28 | |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha actual : |
14/01/2022 |
Actualizado : |
14/01/2022 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
Internacional - -- |
Autor : |
NÚÑEZ OLIVERA, R.; BÓ, G.A.; MENCHACA, A. |
Afiliación : |
R. NÚÑEZ OLIVERA, Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo.; G.A. BÓ, Instituto de Reproducción Animal Córdoba (IRAC), Córdoba, Argentina. // Instituto A.P. de Ciencias Básicas y Aplicadas, Medicina Veterinaria, Universidad Nacional de Villa María. Córdoba, Argentina.; JOSE ALEJO MENCHACA BARBEITO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Association between length of proestrus, follicular size, estrus behavior, and pregnancy rate in beef heifers subjected to fixedetime artificial insemination. |
Fecha de publicación : |
2022 |
Fuente / Imprenta : |
Theriogenology, 15 March 2022, volume 181, pages 1-7. doi: https://doi.org/10.1016/j.theriogenology.2021.12.028 |
DOI : |
10.1016/j.theriogenology.2021.12.028 |
Idioma : |
Inglés |
Notas : |
Article history: Received 9 June 2021 / Received in revised form 22 December 2021 / Accepted 25 December 2021 / Available online 31 December 2021. |
Contenido : |
This study evaluated the relationship between proestrus length and follicular size, estrous behavior, and pregnancy rate in Bos taurus beef heifers subjected to ixedetime artificial insemination (FTAI). A total of 911 heifers received a synchronization treatment protocol for FTAI (JeSynch) consisting of an intravaginal
progesterone device for 6 d, estradiol benzoate at the time of device insertion cloprostenol sodium and eCG at device removal and GnRH at the time of FTAI. The presence or absence of a corpus luteum (CL) was determined by ultrasonography at device insertion and all heifers were tail painted at device removal for estrus detection at the time of FTAI. For the establishment of different periods of proestrus length (i.e., interval from device removal to FTAI), GnRH was administered i.m. at 48 h (n ¼ 308), 60 h (n ¼ 290) or 72 h (n ¼ 313) after device removal. The diameter of the largest follicle at the time of GnRH administrationwas determined by ultrasonography, expression of estrous was determined by percentage of tail paint removal, and FTAI was performed at the time of GnRH administration in all heifers. The diameter of the largest follicle was greater when GnRH/FTAI was performed at 72 or 60 h (12.9 ± 0.2 mm and 12.8 ± 0.1 mm, respectively) than at 48 h (12.2 ± 0.1 mm, P < 0.05). The proportion of heifers in estrus tended to be greater when GnRH/FTAI was performed at 72 h (77.0%, 137/178) than at 48 h (68.2%,
122/179; P ¼ 0.06), and intermediate at 60 h (71.4%, 120/168). Pregnancy rate tended to be greater in heifers with the longest (72 h: 70.0%, 219/313) than the shortest (48 h: 63.6%, 196/308; P < 0.1) proestrus length, while 60 h proestrus length was intermediate (63.1%, 183/290; P¼ NS). Pregnancy rate was
affected by the presence of a CL at device insertion (71.3%, 352/494 in heifers with a CL, vs. 59.0%, 246/417 for those without a CL; P < 0.01). For those heifers bearing a CL, pregnancy rate was greater in heifers with a 72 h proestrus length (77.0%, 134/174) than with 48 or 60 h proestrus length (67.7%, 107/158 and
68.5%, 111/162; respectively; P < 0.05). In heifers without a CL, proestrus length did not affect pregnancy rate. In summary, extending proestrus length by delaying the interval from device removal to GnRH/FTAI from 48 to 72 h, was associated with a greater diameter of the preovulatory follicle, greater proportion of heifers expressing estrus at the time of FTAI, and greater pregnancy rate in cycling beef heifers. MenosThis study evaluated the relationship between proestrus length and follicular size, estrous behavior, and pregnancy rate in Bos taurus beef heifers subjected to ixedetime artificial insemination (FTAI). A total of 911 heifers received a synchronization treatment protocol for FTAI (JeSynch) consisting of an intravaginal
progesterone device for 6 d, estradiol benzoate at the time of device insertion cloprostenol sodium and eCG at device removal and GnRH at the time of FTAI. The presence or absence of a corpus luteum (CL) was determined by ultrasonography at device insertion and all heifers were tail painted at device removal for estrus detection at the time of FTAI. For the establishment of different periods of proestrus length (i.e., interval from device removal to FTAI), GnRH was administered i.m. at 48 h (n ¼ 308), 60 h (n ¼ 290) or 72 h (n ¼ 313) after device removal. The diameter of the largest follicle at the time of GnRH administrationwas determined by ultrasonography, expression of estrous was determined by percentage of tail paint removal, and FTAI was performed at the time of GnRH administration in all heifers. The diameter of the largest follicle was greater when GnRH/FTAI was performed at 72 or 60 h (12.9 ± 0.2 mm and 12.8 ± 0.1 mm, respectively) than at 48 h (12.2 ± 0.1 mm, P < 0.05). The proportion of heifers in estrus tended to be greater when GnRH/FTAI was performed at 72 h (77.0%, 137/178) than at 48 h (68.2%,
122/179; P ¼ 0.06), and intermediate at 60 h (71.4... Presentar Todo |
Palabras claves : |
FOLÍCULO; FOLLICLE; OVULATION; TIMED ARTIFICAL INSEMINATION; ULTRASONOGRAFIA; ULTRASONOGRAPHY. |
Asunto categoría : |
L53 Fisiología Animal - Reproducción |
Marc : |
LEADER 03484naa a2200241 a 4500 001 1062633 005 2022-01-14 008 2022 bl uuuu u00u1 u #d 024 7 $a10.1016/j.theriogenology.2021.12.028$2DOI 100 1 $aNÚÑEZ OLIVERA, R. 245 $aAssociation between length of proestrus, follicular size, estrus behavior, and pregnancy rate in beef heifers subjected to fixedetime artificial insemination.$h[electronic resource] 260 $c2022 500 $aArticle history: Received 9 June 2021 / Received in revised form 22 December 2021 / Accepted 25 December 2021 / Available online 31 December 2021. 520 $aThis study evaluated the relationship between proestrus length and follicular size, estrous behavior, and pregnancy rate in Bos taurus beef heifers subjected to ixedetime artificial insemination (FTAI). A total of 911 heifers received a synchronization treatment protocol for FTAI (JeSynch) consisting of an intravaginal progesterone device for 6 d, estradiol benzoate at the time of device insertion cloprostenol sodium and eCG at device removal and GnRH at the time of FTAI. The presence or absence of a corpus luteum (CL) was determined by ultrasonography at device insertion and all heifers were tail painted at device removal for estrus detection at the time of FTAI. For the establishment of different periods of proestrus length (i.e., interval from device removal to FTAI), GnRH was administered i.m. at 48 h (n ¼ 308), 60 h (n ¼ 290) or 72 h (n ¼ 313) after device removal. The diameter of the largest follicle at the time of GnRH administrationwas determined by ultrasonography, expression of estrous was determined by percentage of tail paint removal, and FTAI was performed at the time of GnRH administration in all heifers. The diameter of the largest follicle was greater when GnRH/FTAI was performed at 72 or 60 h (12.9 ± 0.2 mm and 12.8 ± 0.1 mm, respectively) than at 48 h (12.2 ± 0.1 mm, P < 0.05). The proportion of heifers in estrus tended to be greater when GnRH/FTAI was performed at 72 h (77.0%, 137/178) than at 48 h (68.2%, 122/179; P ¼ 0.06), and intermediate at 60 h (71.4%, 120/168). Pregnancy rate tended to be greater in heifers with the longest (72 h: 70.0%, 219/313) than the shortest (48 h: 63.6%, 196/308; P < 0.1) proestrus length, while 60 h proestrus length was intermediate (63.1%, 183/290; P¼ NS). Pregnancy rate was affected by the presence of a CL at device insertion (71.3%, 352/494 in heifers with a CL, vs. 59.0%, 246/417 for those without a CL; P < 0.01). For those heifers bearing a CL, pregnancy rate was greater in heifers with a 72 h proestrus length (77.0%, 134/174) than with 48 or 60 h proestrus length (67.7%, 107/158 and 68.5%, 111/162; respectively; P < 0.05). In heifers without a CL, proestrus length did not affect pregnancy rate. In summary, extending proestrus length by delaying the interval from device removal to GnRH/FTAI from 48 to 72 h, was associated with a greater diameter of the preovulatory follicle, greater proportion of heifers expressing estrus at the time of FTAI, and greater pregnancy rate in cycling beef heifers. 653 $aFOLÍCULO 653 $aFOLLICLE 653 $aOVULATION 653 $aTIMED ARTIFICAL INSEMINATION 653 $aULTRASONOGRAFIA 653 $aULTRASONOGRAPHY 700 1 $aBÓ, G.A. 700 1 $aMENCHACA, A. 773 $tTheriogenology, 15 March 2022, volume 181, pages 1-7. doi: https://doi.org/10.1016/j.theriogenology.2021.12.028
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