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The objective of this study was to evaluate the effect of 7-day estradiol-progesterone-based [Treat(C)] and 5-day Co-Synch plus progesterone [Treat(Co-Sy)] protocols on ovulation time, pre-ovulatory follicle diameter, corpus luteum (CL) size and blood flow, progesterone (P4) concentration and pregnancy rate (PR) in beef heifers. In Experiment 1, a crossover design was applied (n = 9). For Treat(C), a progesterone intravaginal (PI) device was inserted,
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dc.contributor.author | Reineri, Pablo Sebastian | |
dc.contributor.author | Roldan Bernhard, Sergio Daniel | |
dc.contributor.author | Principi, Santiago Alberto | |
dc.contributor.author | Gerlero, Gustavo Daniel | |
dc.contributor.author | Aller Atucha, Juan Florencio | |
dc.date | info:eu-repo/date/embargoEnd/2024-03-27 | |
dc.date.accessioned | 2023-03-27T12:41:33Z | |
dc.date.available | 2023-03-27T12:41:33Z | |
dc.date.issued | 2023-04 | |
dc.identifier.issn | 0378-4320 | |
dc.identifier.other | https://doi.org/10.1016/j.anireprosci.2023.107223 | |
dc.identifier.uri | http://hdl.handle.net/20.500.12123/14331 | |
dc.identifier.uri | https://www.sciencedirect.com/science/article/abs/pii/S0378432023000374 | |
dc.description.abstract | The objective of this study was to evaluate the effect of 7-day estradiol-progesterone-based [Treat(C)] and 5-day Co-Synch plus progesterone [Treat(Co-Sy)] protocols on ovulation time, pre-ovulatory follicle diameter, corpus luteum (CL) size and blood flow, progesterone (P4) concentration and pregnancy rate (PR) in beef heifers. In Experiment 1, a crossover design was applied (n = 9). For Treat(C), a progesterone intravaginal (PI) device was inserted, plus 2 mg of estradiol benzoate (day 0). On day 7, 500 µg of cloprostenol plus 0.5 mg of estradiol cypionate were administered, and PI was removed. For Treat(Co-Sy), on day 0, a PI was inserted plus 100 µg gonadotropin-releasing hormone (GnRH). On day 5, PI was removed, plus 500 µg of cloprostenol and 100 µg of GnRH were administered at 69–70 h later. From day one to ovulation day, dominant follicle was evaluated by ultrasonography. On days 4 and 8 post-ovulation, CL was evaluated by color Doppler, and P4 concentration was determined by chemiluminescence. In Experiment 2, a split-plot experimental design was used. Protocols followed were the same as in Experiment 1 [Treat(C); n = 310 and Treat(Co-Sy); n = 314]. Heifers were fixed-time artificially inseminated. Pregnancy was determined on day 41. In Experiment 1, the interval between PI removal and ovulation time was different between protocols (P < 0.01). In addition, P4 concentration was related to the CL size (P < 0.001), CL blood flow (P < 0.01) and protocols (P < 0.03). In Experiment 2, PR did not differ between protocols. | eng |
dc.format | application/pdf | es_AR |
dc.language.iso | eng | es_AR |
dc.publisher | Elsevier | es_AR |
dc.relation | info:eu-repograntAgreement/INTA/2019-PD-E5-I107-001/2019-PD-E5-I107-001/AR./Biotecnologías de la reproducción: mejora de la eficiencia reproductiva en especies de interés zootécnico | es_AR |
dc.rights | info:eu-repo/semantics/embargoedAccess | es_AR |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | es_AR |
dc.source | Animal Reproduction Science 251 : 107223 (April 2023) | es_AR |
dc.subject | Ganado de Carne | es_AR |
dc.subject | Beef Cattle | eng |
dc.subject | Ovulación | es_AR |
dc.subject | Ovulation | eng |
dc.subject | Sincronización del Celo | es_AR |
dc.subject | Oestrus Synchronization | eng |
dc.subject | Cuerpo Lúteo | es_AR |
dc.subject | Corpus Luteum | eng |
dc.subject | Progesterona | es_AR |
dc.subject | Progesterone | eng |
dc.subject | Gestación | es_AR |
dc.subject | Pregnancy | eng |
dc.title | Effects of two protocols of ovulation synchronization on corpus luteum size and blood flow, progesterone concentration, and pregnancy rate in beef heifers | es_AR |
dc.type | info:ar-repo/semantics/artículo | es_AR |
dc.type | info:eu-repo/semantics/article | es_AR |
dc.type | info:eu-repo/semantics/acceptedVersion | es_AR |
dc.rights.license | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | es_AR |
dc.description.origen | EEA Santiago del Estero | es_AR |
dc.description.fil | Fil: Reineri, Pablo Sebastian. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina. | es_AR |
dc.description.fil | Fil: Reineri, Pablo Sebastián. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; Argentina | es_AR |
dc.description.fil | Fil: Roldan Bernhard, Sergio Daniel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina. | es_AR |
dc.description.fil | Fil: Principi, Santiago Alberto. Actividad privada; Argentina | es_AR |
dc.description.fil | Fil: Gerlero, Gustavo Daniel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Quimilí; Argentina | es_AR |
dc.description.fil | Fil: Aller Atucha, Juan Florencio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina | es_AR |
dc.subtype | cientifico |
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