| |
|
|
 | Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
|
Registro completo
|
|
Biblioteca (s) : |
INIA Las Brujas. |
|
Fecha : |
15/06/2022 |
|
Actualizado : |
15/06/2022 |
|
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
|
Autor : |
TSCHOPP, J.C.; MACAGNO, A.J.; MAPLETOFT, R.J.; MENCHACA, A.; BÓ, G. A. |
|
Afiliación : |
JUAN CARLOS TSCHOPP, Instituto de Reproducción Animal Córdoba (IRAC), Córdoba, Argentina; Instituto A.P. de Ciencias Básicas y Aplicadas, Medicina Veterinaria, Universidad Nacional de Villa María, Villa del Rosario, Córdoba, Argentina; ALEJANDRO J. MACAGNO, Instituto de Reproducción Animal Córdoba (IRAC), Córdoba, Argentina; Instituto A.P. de Ciencias Básicas y Aplicadas, Medicina Veterinaria, Universidad Nacional de Villa María, Villa del Rosario, Córdoba, Argentina; REUBEN J. MAPLETOFT, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada; JOSE ALEJO MENCHACA BARBEITO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay; GABRIEL 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, Villa del Rosario, Córdoba, Argentina. |
|
Título : |
Effect of the addition of GnRH and a second prostaglandin F2α treatment on pregnancy per artificial insemination in lactating dairy cows submitted to an estradiol/progesterone-based timed-AI protocol. |
|
Fecha de publicación : |
2022 |
|
Fuente / Imprenta : |
Theriogenology, 2022, Volume 188, Pages 63-70. doi: https://doi.org/10.1016/j.theriogenology.2022.05.019 |
|
ISSN : |
0093-691X |
|
DOI : |
10.1016/j.theriogenology.2022.05.019 |
|
Idioma : |
Inglés |
|
Notas : |
Article history: Received 23 February 2022; Received in revised form 23 May 2022; Accepted 24 May 2022; Available online 27 May 2022; To be published August 2022.
Corresponding author: Bó, G.A.; Instituto de Reproducción Animal Córdoba (IRAC), Zona Rural General Paz, Córdoba, Uruguay; email:gabrielbo62@gmail.com --
This research was supported by Fondo Nacional de Ciencia y Tecnología (FONCYT PICT 2017?4550), Instituto de Investigación Universidad Nacional de Villa María (UNVM), and Instituto de Reproducción Animal de Córdoba (IRAC). |
|
Contenido : |
ABSTRACT - Two experiments determined whether the addition of GnRH at the beginning of an estradiol (E2)/progesterone (P4)- based synchronization protocol and/or a second dose of prostaglandin F2α (PGF2α) the day before P4 device removal improves pregnancy rate in lactating dairy cows. On Day 0, all cows received a CIDR-B device and 2 mg i.m. estradiol benzoate, and half received 200 μg i.m. gonadorelin acetate (GnRH). On Day 7, cows were further subdivided to receive PGF2α (500 μg i.m. cloprostenol) or no PGF2α treatment. On Day 8, CIDR-B were removed, and all cows received PGF2α, 1 mg estradiol cypionate and 400 IU eCG i.m., and an estrus detection aid. Experiment 1 was designed to evaluate the effect of treatments on follicular development from P4 device removal to ovulation, expression of estrus, time of ovulation and serum P4 concentrations. Cows (n = 76) were examined by ultrasonography and bled for serum P4 determinations every 12 h from the time of P4 device removal but were not inseminated. In Experiment 2, all cows (n = 1036) were inseminated based on estrus detection using tail-paint. Cows with >50% of the paint rubbed-off by 48 h after P4 device removal were inseminated at that time, whereas those not in estrus received 100 μg i.m. of GnRH and were inseminated 12 h later. In Experiment 1, the interval from P4 device removal to ovulation was 71.7 ± 1.5 h and did not differ among groups. However, cows that received 2 injections of PGF2α had a greater (P < 0.01) estrus rate and lower (P < 0.01) P4 concentrations at 48 h after P4 device removal than those that received 1 PGF2α (estrus rate: 86.8% vs 68.4% and P4 concentration: 0.12 ± 0.01 vs 0.36 ± 0.07, for 2 and 1 PGF2α, respectively). In Experiment 2, estrus rate was also influenced by the number of PGF2α treatments, regardless of whether cows received or did not receive GnRH on Day 0 (2 PGF2α: 84.7%, 438/517 vs 1 PGF2α: 65.7%, 341/519; P < 0.01). Furthermore, there was a GnRH treatment by number of PGF2α treatments interaction (P < 0.05) on P/AI that was attributed to greater (P < 0.05) P/AI in cows that received GnRH on Day 0 and 2 PGF2α than in the other three treatment groups (EB+1 PGF2α: 45.2%, 119/263; EB+2 PGF2α: 45.8%, 119/260; EB + GnRH + 1 PGF2α: 45.7%, 117/256 and EB + GnRH + 2 PGF2α: 57.2%, 147/257). It was concluded that the addition of GnRH on Day 0 and a second dose of PGF2α the day before P4 device removal improves P/AI in lactating dairy cows synchronized with an estradiol/P4-based protocol. © 2022 Elsevier Inc. MenosABSTRACT - Two experiments determined whether the addition of GnRH at the beginning of an estradiol (E2)/progesterone (P4)- based synchronization protocol and/or a second dose of prostaglandin F2α (PGF2α) the day before P4 device removal improves pregnancy rate in lactating dairy cows. On Day 0, all cows received a CIDR-B device and 2 mg i.m. estradiol benzoate, and half received 200 μg i.m. gonadorelin acetate (GnRH). On Day 7, cows were further subdivided to receive PGF2α (500 μg i.m. cloprostenol) or no PGF2α treatment. On Day 8, CIDR-B were removed, and all cows received PGF2α, 1 mg estradiol cypionate and 400 IU eCG i.m., and an estrus detection aid. Experiment 1 was designed to evaluate the effect of treatments on follicular development from P4 device removal to ovulation, expression of estrus, time of ovulation and serum P4 concentrations. Cows (n = 76) were examined by ultrasonography and bled for serum P4 determinations every 12 h from the time of P4 device removal but were not inseminated. In Experiment 2, all cows (n = 1036) were inseminated based on estrus detection using tail-paint. Cows with >50% of the paint rubbed-off by 48 h after P4 device removal were inseminated at that time, whereas those not in estrus received 100 μg i.m. of GnRH and were inseminated 12 h later. In Experiment 1, the interval from P4 device removal to ovulation was 71.7 ± 1.5 h and did not differ among groups. However, cows that received 2 injectio... Presentar Todo |
|
Palabras claves : |
Dairy cows; Estrus; GnRH; Ovulation; PLATAFORMA DE SALUD ANIMAL; Timed-AI. |
|
Asunto categoría : |
L10 Genética y mejoramiento animal |
|
Marc : |
LEADER 04132naa a2200277 a 4500
001 1063305
005 2022-06-15
008 2022 bl uuuu u00u1 u #d
022 $a0093-691X
024 7 $a10.1016/j.theriogenology.2022.05.019$2DOI
100 1 $aTSCHOPP, J.C.
245 $aEffect of the addition of GnRH and a second prostaglandin F2α treatment on pregnancy per artificial insemination in lactating dairy cows submitted to an estradiol/progesterone-based timed-AI protocol.$h[electronic resource]
260 $c2022
500 $aArticle history: Received 23 February 2022; Received in revised form 23 May 2022; Accepted 24 May 2022; Available online 27 May 2022; To be published August 2022. Corresponding author: Bó, G.A.; Instituto de Reproducción Animal Córdoba (IRAC), Zona Rural General Paz, Córdoba, Uruguay; email:gabrielbo62@gmail.com -- This research was supported by Fondo Nacional de Ciencia y Tecnología (FONCYT PICT 2017?4550), Instituto de Investigación Universidad Nacional de Villa María (UNVM), and Instituto de Reproducción Animal de Córdoba (IRAC).
520 $aABSTRACT - Two experiments determined whether the addition of GnRH at the beginning of an estradiol (E2)/progesterone (P4)- based synchronization protocol and/or a second dose of prostaglandin F2α (PGF2α) the day before P4 device removal improves pregnancy rate in lactating dairy cows. On Day 0, all cows received a CIDR-B device and 2 mg i.m. estradiol benzoate, and half received 200 μg i.m. gonadorelin acetate (GnRH). On Day 7, cows were further subdivided to receive PGF2α (500 μg i.m. cloprostenol) or no PGF2α treatment. On Day 8, CIDR-B were removed, and all cows received PGF2α, 1 mg estradiol cypionate and 400 IU eCG i.m., and an estrus detection aid. Experiment 1 was designed to evaluate the effect of treatments on follicular development from P4 device removal to ovulation, expression of estrus, time of ovulation and serum P4 concentrations. Cows (n = 76) were examined by ultrasonography and bled for serum P4 determinations every 12 h from the time of P4 device removal but were not inseminated. In Experiment 2, all cows (n = 1036) were inseminated based on estrus detection using tail-paint. Cows with >50% of the paint rubbed-off by 48 h after P4 device removal were inseminated at that time, whereas those not in estrus received 100 μg i.m. of GnRH and were inseminated 12 h later. In Experiment 1, the interval from P4 device removal to ovulation was 71.7 ± 1.5 h and did not differ among groups. However, cows that received 2 injections of PGF2α had a greater (P < 0.01) estrus rate and lower (P < 0.01) P4 concentrations at 48 h after P4 device removal than those that received 1 PGF2α (estrus rate: 86.8% vs 68.4% and P4 concentration: 0.12 ± 0.01 vs 0.36 ± 0.07, for 2 and 1 PGF2α, respectively). In Experiment 2, estrus rate was also influenced by the number of PGF2α treatments, regardless of whether cows received or did not receive GnRH on Day 0 (2 PGF2α: 84.7%, 438/517 vs 1 PGF2α: 65.7%, 341/519; P < 0.01). Furthermore, there was a GnRH treatment by number of PGF2α treatments interaction (P < 0.05) on P/AI that was attributed to greater (P < 0.05) P/AI in cows that received GnRH on Day 0 and 2 PGF2α than in the other three treatment groups (EB+1 PGF2α: 45.2%, 119/263; EB+2 PGF2α: 45.8%, 119/260; EB + GnRH + 1 PGF2α: 45.7%, 117/256 and EB + GnRH + 2 PGF2α: 57.2%, 147/257). It was concluded that the addition of GnRH on Day 0 and a second dose of PGF2α the day before P4 device removal improves P/AI in lactating dairy cows synchronized with an estradiol/P4-based protocol. © 2022 Elsevier Inc.
653 $aDairy cows
653 $aEstrus
653 $aGnRH
653 $aOvulation
653 $aPLATAFORMA DE SALUD ANIMAL
653 $aTimed-AI
700 1 $aMACAGNO, A.J.
700 1 $aMAPLETOFT, R.J.
700 1 $aMENCHACA, A.
700 1 $aBÓ, G. A.
773 $tTheriogenology, 2022, Volume 188, Pages 63-70. doi: https://doi.org/10.1016/j.theriogenology.2022.05.019
Descargar
Esconder MarcPresentar Marc Completo |
|
Registro original : |
INIA Las Brujas (LB) |
|
|
Biblioteca
|
Identificación
|
Origen
|
Tipo / Formato
|
Clasificación
|
Cutter
|
Registro
|
Volumen
|
Estado
|
Volver
|
|
|
| Registros recuperados : 7 | |
| 1. |  | BARAIBAR, A. Fijación biológica de nitrógeno: estrategias para su maximización In: MORON, A.; MARTINO, D.; RESTAINO, E. Manejo y fertilidad de suelos Montevideo (Uruguay): INIA, 1994. p. 23-26 (INIA Serie Técnica; 42) Información presentada al I Curso de Actualización Manejo y Fertilidad de Suelos, 1994 may : La Estanzuela| Tipo: Capítulo en Libro Técnico-Científico |
| Biblioteca(s): INIA La Estanzuela; INIA Las Brujas; INIA Tacuarembó. |
|    |
| 2. | | Baraibar, A. Inoculación de alfalfa ln: "Consorcios Regionales de Experimentación Agrícola; Instituto Nacional de Investigación Agropecuaria (Uruguay)". Jornada sobre alfalfa. [s.l.]: INIA La Estanzuela, 1996. p. 50-53| Biblioteca(s): INIA La Estanzuela. |
| |
| 7. | | Labandera, C.; Milian, A.; Baraibar, A.; Pagliano, D.; Russell, H.; Pastorini, D. Calidad de inoculantes, número de rizobios en la semilla y su efecto en la implantación y persistencia de las leguminosas ln: Seminario Nacional de Campo Natural, 2 : 1990 nov 15-16 : Tacuarembó Montevideo (Uruguay): Hemisferio Sur, 1990. p267-269 Participaron en el seminario : INIA, Sociedad Uruguaya de Pasturas Naturales, Facultad de Agronomía, Plan Agropecuario| Biblioteca(s): INIA La Estanzuela. |
| |
| Registros recuperados : 7 | |
|
| Expresión de búsqueda válido. Check! |
|
|
