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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
04/11/2022 |
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Actualizado : |
07/11/2022 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
ARAGUNDE VIEYTES, R.; VIÑOLES, C.; GASTAL, G.D.A.; CAVESTANY, D. |
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Afiliación : |
RAFAEL ARAGUNDE VIEYTES, Facultad de Veterinaria, Universidad de la Republica, Ruta 1, km 42.5, Montevideo, Uruguay; CAROLINA VIÑOLES GIL, Centro de Salud Reproductiva de Rumiantes en Sistemas Agroforestales, Casa de la Universidad de Cerro Largo, UdelaR, Ruta 26, km 408, Cerro Largo, Uruguay; GUSTAVO DESIRE ANTUNES GASTAL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; DANIEL CAVESTANY, Facultad de Veterinaria, Universidad de la Republica, Ruta 1, km 42.5, Montevideo, Uruguay. |
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Título : |
Equine chorionic gonadotropin administered on day 5 of a 7-days fixed-time artificial insemination program improves ovulation synchrony and corpus luteum function in anestrous beef cows |
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Fecha de publicación : |
2022 |
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Fuente / Imprenta : |
Theriogenology, January 2023, Volume 195, Pages 62-68. doi: https://doi.org/10.1016/j.theriogenology.2022.10.016 |
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ISSN : |
0093-691X |
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DOI : |
10.1016/j.theriogenology.2022.10.016 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 17 June 2022; Received in revised form 5 October 2022; Accepted 12 October 2022; Available online 17 October 2022.
Correspondence authors: Gastal, G.D.A.; Ruta 11, Km 50, Colonia del Sacramento, Colonia, Uruguay; email:ggastal@inia.org.uy -- Aragunde Vieytes, R.; Facultad de Veterinaria, UDELAR, Ruta 1, km 42.5, Montevideo, Uruguay; email:rafaelaragunde@fvet.edu.uy -- |
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Contenido : |
ABSTRACT.- In order to assess the effect of equine chorionic gonadotropin (eCG) administered on Day 5 or 7 of a fixed-time artificial insemination protocol (FTAI) in anestrous suckled beef cows, two experiments were performed to determine the following endpoints: Experiment 1 (n = 22), preovulatory follicle (POF) diameter, ovulation time, corpus luteum (CL) area, estradiol (E2) and progesterone (P4) concentrations; and Experiment 2 (n = 676), a field trial to evaluate conception rate using the same experimental design. In both experiments, a synchronization protocol using estradiol benzoate (EB) (Day 0), intravaginal progestin device (IVD) (Days 0 through 7), prostaglandin (PGF) (Day 7), eCG (Day 5 or 7), and GnRH (Day 9). Treatment consisted of administering 400 IU of eCG on Day 5 (T5) or Day 7 (T7 or control) concomitant with treatment with PGF2α. In experiment 1, all cows of T5 ovulated by 16 h after GnRH administration. The POF tended (P = 0.06; P = 0.07) to be larger at 1 and 2 d before ovulation in T5. The day before ovulation, E2 tended to be lower (P = 0.06) in T5 compared with T7. The CL area and the P4 concentrations were greater (P = 0.04) on day 9 in T5 compared with T7. In experiment 2, the conception rate was greater (P = 0.04) in T5 (72.2%) compared with T7 (61.0%) group. Therefore, administration of eCG on Day 5 of the designed protocol hastened ovulation of a greater follicle, which produced a larger CL and greater concentrations of progesterone by Day 9 after ovulation, resulting in 11.2% increase in cows pregnant. © 2022 Elsevier Inc. MenosABSTRACT.- In order to assess the effect of equine chorionic gonadotropin (eCG) administered on Day 5 or 7 of a fixed-time artificial insemination protocol (FTAI) in anestrous suckled beef cows, two experiments were performed to determine the following endpoints: Experiment 1 (n = 22), preovulatory follicle (POF) diameter, ovulation time, corpus luteum (CL) area, estradiol (E2) and progesterone (P4) concentrations; and Experiment 2 (n = 676), a field trial to evaluate conception rate using the same experimental design. In both experiments, a synchronization protocol using estradiol benzoate (EB) (Day 0), intravaginal progestin device (IVD) (Days 0 through 7), prostaglandin (PGF) (Day 7), eCG (Day 5 or 7), and GnRH (Day 9). Treatment consisted of administering 400 IU of eCG on Day 5 (T5) or Day 7 (T7 or control) concomitant with treatment with PGF2α. In experiment 1, all cows of T5 ovulated by 16 h after GnRH administration. The POF tended (P = 0.06; P = 0.07) to be larger at 1 and 2 d before ovulation in T5. The day before ovulation, E2 tended to be lower (P = 0.06) in T5 compared with T7. The CL area and the P4 concentrations were greater (P = 0.04) on day 9 in T5 compared with T7. In experiment 2, the conception rate was greater (P = 0.04) in T5 (72.2%) compared with T7 (61.0%) group. Therefore, administration of eCG on Day 5 of the designed protocol hastened ovulation of a greater follicle, which produced a larger CL and greater concentrations of progesterone by Day ... Presentar Todo |
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Palabras claves : |
Anestrous; Corpus luteum; Equine chorionic gonadotropin; Ovulation; PLATAFORMA DE INVESTIGACIÓN EN SALUD ANIMAL; Postpartum; Preovulatory follicle. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 02982naa a2200277 a 4500
001 1063704
005 2022-11-07
008 2022 bl uuuu u00u1 u #d
022 $a0093-691X
024 7 $a10.1016/j.theriogenology.2022.10.016$2DOI
100 1 $aARAGUNDE VIEYTES, R.
245 $aEquine chorionic gonadotropin administered on day 5 of a 7-days fixed-time artificial insemination program improves ovulation synchrony and corpus luteum function in anestrous beef cows$h[electronic resource]
260 $c2022
500 $aArticle history: Received 17 June 2022; Received in revised form 5 October 2022; Accepted 12 October 2022; Available online 17 October 2022. Correspondence authors: Gastal, G.D.A.; Ruta 11, Km 50, Colonia del Sacramento, Colonia, Uruguay; email:ggastal@inia.org.uy -- Aragunde Vieytes, R.; Facultad de Veterinaria, UDELAR, Ruta 1, km 42.5, Montevideo, Uruguay; email:rafaelaragunde@fvet.edu.uy --
520 $aABSTRACT.- In order to assess the effect of equine chorionic gonadotropin (eCG) administered on Day 5 or 7 of a fixed-time artificial insemination protocol (FTAI) in anestrous suckled beef cows, two experiments were performed to determine the following endpoints: Experiment 1 (n = 22), preovulatory follicle (POF) diameter, ovulation time, corpus luteum (CL) area, estradiol (E2) and progesterone (P4) concentrations; and Experiment 2 (n = 676), a field trial to evaluate conception rate using the same experimental design. In both experiments, a synchronization protocol using estradiol benzoate (EB) (Day 0), intravaginal progestin device (IVD) (Days 0 through 7), prostaglandin (PGF) (Day 7), eCG (Day 5 or 7), and GnRH (Day 9). Treatment consisted of administering 400 IU of eCG on Day 5 (T5) or Day 7 (T7 or control) concomitant with treatment with PGF2α. In experiment 1, all cows of T5 ovulated by 16 h after GnRH administration. The POF tended (P = 0.06; P = 0.07) to be larger at 1 and 2 d before ovulation in T5. The day before ovulation, E2 tended to be lower (P = 0.06) in T5 compared with T7. The CL area and the P4 concentrations were greater (P = 0.04) on day 9 in T5 compared with T7. In experiment 2, the conception rate was greater (P = 0.04) in T5 (72.2%) compared with T7 (61.0%) group. Therefore, administration of eCG on Day 5 of the designed protocol hastened ovulation of a greater follicle, which produced a larger CL and greater concentrations of progesterone by Day 9 after ovulation, resulting in 11.2% increase in cows pregnant. © 2022 Elsevier Inc.
653 $aAnestrous
653 $aCorpus luteum
653 $aEquine chorionic gonadotropin
653 $aOvulation
653 $aPLATAFORMA DE INVESTIGACIÓN EN SALUD ANIMAL
653 $aPostpartum
653 $aPreovulatory follicle
700 1 $aVIÑOLES, C.
700 1 $aGASTAL, G.D.A.
700 1 $aCAVESTANY, D.
773 $tTheriogenology, January 2023, Volume 195, Pages 62-68. doi: https://doi.org/10.1016/j.theriogenology.2022.10.016
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INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha actual : |
09/02/2022 |
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Actualizado : |
01/09/2022 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
MACEDO, I.; ROEL, A.; AYALA, W.; PRAVIA, V.; TERRA, J.A.; PITTELKOW, C. M. |
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Afiliación : |
IGNACIO MACEDO YAPOR, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. Dep. of Plant Sciences, Univ. of California, Davis, CA, USA; ALVARO ROEL DELLAZOPPA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; WALTER FELIZARDO AYALA SILVERA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARIA VIRGINIA PRAVIA NIN, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JOSÉ ALFREDO TERRA FERNÁNDEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CAMERON M. PITTELKOW, Dep. of Plant Sciences, Univ. of California, Davis, CA, USA. |
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Título : |
Irrigated rice rotations affect yield and soil organic carbon sequestration in temperate South America. |
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Fecha de publicación : |
2022 |
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Fuente / Imprenta : |
Agronomy Journal, 2022, 1-15. OPEN ACCESS. doi: https://doi.org/10.1002/agj2.20964 |
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DOI : |
10.1002/agj2.20964 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received: 25 July 2021 // Accepted: 16 November 2021 // First published: 25 November 2021. Correspondence: Ignacio Macedo, email:macedoyapor@gmail.com |
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Contenido : |
Rice (Oryza sativa L.) systems rotated with perennial pastures have intensified in South America to increase annual grain productivity, but the effects on rice yield and soil quality remain poorly understood. We evaluated rice grain yield, crop and pasture biomass production, and soil organic carbon (SOC) and total nitrogen stocks (0?15-cm depth) in three rice-based rotations over 8 yr in Uruguay. Treatments were: (a) rice?pasture [a 5 yr rotation of rice?ryegrass (Lolium multiflorum Lam.)?rice, then 3.5 yr of a perennial mixture of tall fescue (Festuca arundinacea Schreb.), white clover (Trifolium repens L.), and birdsfoot trefoil (Lotus corniculatus L.)], (b) rice?soybean [a 2-yr rotation of rice?ryegrass?soybean (Glycine max [L.] Merr.)?Egyptian clover (Trifolium alexandrinum L.)], and (c) rice?cover crop (an annual rotation of rice?Egyptian clover). Rice after soybean or pasture achieved the highest yield (9.8 Mg ha?1), 9% higher than rice after rice in the rice?pasture and rice?cover crop systems. Estimated belowground biomass under rice?pasture (2.7 Mg ha?1) was 12 and 42% greater than under rice?cover crop and rice?soybean rotations, respectively. Rice?pasture showed an increase of 0.6 Mg ha?1 yr?1 of SOC; no changes were observed in the intensified rotations replacing pasture with additional rice or soybean. All systems sustained soil total N. These results provide insights for implementing sustainable rice-based rotations, with rice?pasture being the only system that increased SOC while achieving high rice yields and belowground biomass productivity. MenosRice (Oryza sativa L.) systems rotated with perennial pastures have intensified in South America to increase annual grain productivity, but the effects on rice yield and soil quality remain poorly understood. We evaluated rice grain yield, crop and pasture biomass production, and soil organic carbon (SOC) and total nitrogen stocks (0?15-cm depth) in three rice-based rotations over 8 yr in Uruguay. Treatments were: (a) rice?pasture [a 5 yr rotation of rice?ryegrass (Lolium multiflorum Lam.)?rice, then 3.5 yr of a perennial mixture of tall fescue (Festuca arundinacea Schreb.), white clover (Trifolium repens L.), and birdsfoot trefoil (Lotus corniculatus L.)], (b) rice?soybean [a 2-yr rotation of rice?ryegrass?soybean (Glycine max [L.] Merr.)?Egyptian clover (Trifolium alexandrinum L.)], and (c) rice?cover crop (an annual rotation of rice?Egyptian clover). Rice after soybean or pasture achieved the highest yield (9.8 Mg ha?1), 9% higher than rice after rice in the rice?pasture and rice?cover crop systems. Estimated belowground biomass under rice?pasture (2.7 Mg ha?1) was 12 and 42% greater than under rice?cover crop and rice?soybean rotations, respectively. Rice?pasture showed an increase of 0.6 Mg ha?1 yr?1 of SOC; no changes were observed in the intensified rotations replacing pasture with additional rice or soybean. All systems sustained soil total N. These results provide insights for implementing sustainable rice-based rotations, with rice?pasture being the only system tha... Presentar Todo |
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Palabras claves : |
ARROZ; Bulk density (BD); ROTACIONES; ROTACIONES ARROZ-PASTURAS-OTROS CULTIVOS; SOIL ORGANIC CARBON; TOTAL NITROGEN; URUGUAY. |
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Asunto categoría : |
P01 Conservación de la naturaleza y recursos de La tierra |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/16267/1/Agronomy-Journal-2021-Macedo-2022.pdf
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Marc : |
LEADER 02608naa a2200289 a 4500
001 1062738
005 2022-09-01
008 2022 bl uuuu u00u1 u #d
024 7 $a10.1002/agj2.20964$2DOI
100 1 $aMACEDO, I.
245 $aIrrigated rice rotations affect yield and soil organic carbon sequestration in temperate South America.$h[electronic resource]
260 $c2022
500 $aArticle history: Received: 25 July 2021 // Accepted: 16 November 2021 // First published: 25 November 2021. Correspondence: Ignacio Macedo, email:macedoyapor@gmail.com
520 $aRice (Oryza sativa L.) systems rotated with perennial pastures have intensified in South America to increase annual grain productivity, but the effects on rice yield and soil quality remain poorly understood. We evaluated rice grain yield, crop and pasture biomass production, and soil organic carbon (SOC) and total nitrogen stocks (0?15-cm depth) in three rice-based rotations over 8 yr in Uruguay. Treatments were: (a) rice?pasture [a 5 yr rotation of rice?ryegrass (Lolium multiflorum Lam.)?rice, then 3.5 yr of a perennial mixture of tall fescue (Festuca arundinacea Schreb.), white clover (Trifolium repens L.), and birdsfoot trefoil (Lotus corniculatus L.)], (b) rice?soybean [a 2-yr rotation of rice?ryegrass?soybean (Glycine max [L.] Merr.)?Egyptian clover (Trifolium alexandrinum L.)], and (c) rice?cover crop (an annual rotation of rice?Egyptian clover). Rice after soybean or pasture achieved the highest yield (9.8 Mg ha?1), 9% higher than rice after rice in the rice?pasture and rice?cover crop systems. Estimated belowground biomass under rice?pasture (2.7 Mg ha?1) was 12 and 42% greater than under rice?cover crop and rice?soybean rotations, respectively. Rice?pasture showed an increase of 0.6 Mg ha?1 yr?1 of SOC; no changes were observed in the intensified rotations replacing pasture with additional rice or soybean. All systems sustained soil total N. These results provide insights for implementing sustainable rice-based rotations, with rice?pasture being the only system that increased SOC while achieving high rice yields and belowground biomass productivity.
653 $aARROZ
653 $aBulk density (BD)
653 $aROTACIONES
653 $aROTACIONES ARROZ-PASTURAS-OTROS CULTIVOS
653 $aSOIL ORGANIC CARBON
653 $aTOTAL NITROGEN
653 $aURUGUAY
700 1 $aROEL, A.
700 1 $aAYALA, W.
700 1 $aPRAVIA, V.
700 1 $aTERRA, J.A.
700 1 $aPITTELKOW, C. M.
773 $tAgronomy Journal, 2022, 1-15. OPEN ACCESS. doi: https://doi.org/10.1002/agj2.20964
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