Hormones and monensin use to improve pregnancy rates in grazing lactating beef cows in the semiarid region of Argentina

Autores
Reineri, Pablo Sebastian; Piccardi, Mónica Belén; Arroquy, Jose Ignacio; Fumagalli, Arnaldo Enrique; Sumampa Coria, María; Hernandez, Olegario; Bó, Gabriel; Palma, Gustavo Adolfo
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The objectives of this study were 1) to determine the effect of monensin treatment, alone or combined with a hormonal estrus synchronization treatment, on the pregnancy rate of lactating beef cows, and 2) to evaluate the effect of monensin capsule administration on ruminal metabolism in steers. In experiment 1, ninety-four cows were selected from a 300 cow herd. The experimental design used was a 2 x 2 factorial with the administration of monensin capsule as first factor (M1 = with monensin vs. M0 = without monensin) and hormonal treatment as second factor (H1 = with hormonal treatment vs. H0 = no hormonal treatment). Thirty-eight days before the beginning of the breeding season, cows were randomly assigned to the first factor, and thirty days later to the second factor, resulting in four treatments: M1H0, M1H1, M0H0 and M0H1. Cow were exposed to bull (bull/cow ratio 1:20) from day 0 (day 0 = start of the breeding season and 38 days after monensin capsule administration) to day 50. Pregnancy diagnosis was performed at 30, 60 and 80 days after start breeding season by ultrasonography. In experiment 2, eight ruminally cannulated crossbred beef steers were randomly assigned to two treatments (M1 and M0). To determine proportion of volatile fatty acids (VFA), ruminal fluid samples were taken on days 0, 40 and 77 of the experimental period, at 0, 4 and 12 h after grazing. In experiment 1, treatments whit monensin did not improve pregnancy rate (P = 0.95), however, hormonal treatment resulted in grater pregnancy rates (P = 0.03). In experiment 2, the proportion of VFA in ruminal fluid of steers was significantly different between treatments. The highest proportion of propionate was found in ruminal fluid from M1 treatment at 12 h after grazing (P = 0.04). In conclusion, the treatment with monensin increased the proportion of propionate. The result might suggest that energy balance was improved in steers, without improvement in cow´s pregnancy rates. Treatment with monensin alone did not improve pregnancy rate, nor did treatment with monensin enhance the pregnancy rate when a hormonal synchronisation treatment was given. Nevertheless, the use of a hormonal treatment increased pregnancy rate, suggesting that it could be used as a suitable tool to enhance the productivity in cows with marginal body condition score
EEA Santiago del Estero
Fil: Reineri, Pablo Sebastian. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; Argentina
Fil: Piccardi, Mónica Belén. Instituto de Bionanotecnología del NOA (CONICET-UNSE). Laboratorio de Producción Animal; Argentina
Fil: Arroquy, Jose Ignacio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; Argentina
Fil: Fumagalli, Arnaldo Enrique. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; Argentina
Fil: Sumampa Coria, María. Instituto de Bionanotecnología del NOA (CONICET-UNSE). Laboratorio de Producción Animal; Argentina
Fil: Hernandez, Olegario. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina
Fil: Bo, Gabriel Amilcar. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina. Institute of Animal Reproduction Córdoba; Argentina
Fil: Palma, Gustavo Adolfo. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; Argentina. Instituto de Bionanotecnología del NOA (CONICET-UNSE). Laboratorio de Producción Animal; Argentina
Fuente
Animal Reproduction 15 (1) : 56-63. (Jan.-Mar. 2018)
Materia
Ganado de Carne
Pastoreo
Gestación
Monensina
Hormonas
Beef Cattle
Grazing
Pregnancy
Monensin
Hormones
Región Semiárida, Argentina
Tasa de Embarazo
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/2559
Acceder
id INTADig_60d4899821812e3d95a3c92ad64652e4
oai_identifier_str oai:localhost:20.500.12123/2559
network_acronym_str INTADig
repository_id_str l
network_name_str INTA Digital (INTA)
spelling Hormones and monensin use to improve pregnancy rates in grazing lactating beef cows in the semiarid region of ArgentinaReineri, Pablo SebastianPiccardi, Mónica BelénArroquy, Jose IgnacioFumagalli, Arnaldo EnriqueSumampa Coria, MaríaHernandez, OlegarioBó, GabrielPalma, Gustavo AdolfoGanado de CarnePastoreoGestaciónMonensinaHormonasBeef CattleGrazingPregnancyMonensinHormonesRegión Semiárida, ArgentinaTasa de EmbarazoThe objectives of this study were 1) to determine the effect of monensin treatment, alone or combined with a hormonal estrus synchronization treatment, on the pregnancy rate of lactating beef cows, and 2) to evaluate the effect of monensin capsule administration on ruminal metabolism in steers. In experiment 1, ninety-four cows were selected from a 300 cow herd. The experimental design used was a 2 x 2 factorial with the administration of monensin capsule as first factor (M1 = with monensin vs. M0 = without monensin) and hormonal treatment as second factor (H1 = with hormonal treatment vs. H0 = no hormonal treatment). Thirty-eight days before the beginning of the breeding season, cows were randomly assigned to the first factor, and thirty days later to the second factor, resulting in four treatments: M1H0, M1H1, M0H0 and M0H1. Cow were exposed to bull (bull/cow ratio 1:20) from day 0 (day 0 = start of the breeding season and 38 days after monensin capsule administration) to day 50. Pregnancy diagnosis was performed at 30, 60 and 80 days after start breeding season by ultrasonography. In experiment 2, eight ruminally cannulated crossbred beef steers were randomly assigned to two treatments (M1 and M0). To determine proportion of volatile fatty acids (VFA), ruminal fluid samples were taken on days 0, 40 and 77 of the experimental period, at 0, 4 and 12 h after grazing. In experiment 1, treatments whit monensin did not improve pregnancy rate (P = 0.95), however, hormonal treatment resulted in grater pregnancy rates (P = 0.03). In experiment 2, the proportion of VFA in ruminal fluid of steers was significantly different between treatments. The highest proportion of propionate was found in ruminal fluid from M1 treatment at 12 h after grazing (P = 0.04). In conclusion, the treatment with monensin increased the proportion of propionate. The result might suggest that energy balance was improved in steers, without improvement in cow´s pregnancy rates. Treatment with monensin alone did not improve pregnancy rate, nor did treatment with monensin enhance the pregnancy rate when a hormonal synchronisation treatment was given. Nevertheless, the use of a hormonal treatment increased pregnancy rate, suggesting that it could be used as a suitable tool to enhance the productivity in cows with marginal body condition scoreEEA Santiago del EsteroFil: Reineri, Pablo Sebastian. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; ArgentinaFil: Piccardi, Mónica Belén. Instituto de Bionanotecnología del NOA (CONICET-UNSE). Laboratorio de Producción Animal; ArgentinaFil: Arroquy, Jose Ignacio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; ArgentinaFil: Fumagalli, Arnaldo Enrique. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; ArgentinaFil: Sumampa Coria, María. Instituto de Bionanotecnología del NOA (CONICET-UNSE). Laboratorio de Producción Animal; ArgentinaFil: Hernandez, Olegario. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; ArgentinaFil: Bo, Gabriel Amilcar. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina. Institute of Animal Reproduction Córdoba; ArgentinaFil: Palma, Gustavo Adolfo. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; Argentina. Instituto de Bionanotecnología del NOA (CONICET-UNSE). Laboratorio de Producción Animal; Argentina2018-06-06T15:12:29Z2018-06-06T15:12:29Z2018-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/2559http://www.cbra.org.br/portal/downloads/publicacoes/animalreproduction/issues/download/v15/v15n1/p56-63%20(AR-2017-0032).pdf1806-96141984-3143https://doi.org/10.21451/1984-3143-2017-AR0032Animal Reproduction 15 (1) : 56-63. (Jan.-Mar. 2018)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-10-16T09:29:12Zoai:localhost:20.500.12123/2559instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-10-16 09:29:12.583INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Hormones and monensin use to improve pregnancy rates in grazing lactating beef cows in the semiarid region of Argentina
title Hormones and monensin use to improve pregnancy rates in grazing lactating beef cows in the semiarid region of Argentina
spellingShingle Hormones and monensin use to improve pregnancy rates in grazing lactating beef cows in the semiarid region of Argentina
Reineri, Pablo Sebastian
Ganado de Carne
Pastoreo
Gestación
Monensina
Hormonas
Beef Cattle
Grazing
Pregnancy
Monensin
Hormones
Región Semiárida, Argentina
Tasa de Embarazo
title_short Hormones and monensin use to improve pregnancy rates in grazing lactating beef cows in the semiarid region of Argentina
title_full Hormones and monensin use to improve pregnancy rates in grazing lactating beef cows in the semiarid region of Argentina
title_fullStr Hormones and monensin use to improve pregnancy rates in grazing lactating beef cows in the semiarid region of Argentina
title_full_unstemmed Hormones and monensin use to improve pregnancy rates in grazing lactating beef cows in the semiarid region of Argentina
title_sort Hormones and monensin use to improve pregnancy rates in grazing lactating beef cows in the semiarid region of Argentina
dc.creator.none.fl_str_mv Reineri, Pablo Sebastian
Piccardi, Mónica Belén
Arroquy, Jose Ignacio
Fumagalli, Arnaldo Enrique
Sumampa Coria, María
Hernandez, Olegario
Bó, Gabriel
Palma, Gustavo Adolfo
author Reineri, Pablo Sebastian
author_facet Reineri, Pablo Sebastian
Piccardi, Mónica Belén
Arroquy, Jose Ignacio
Fumagalli, Arnaldo Enrique
Sumampa Coria, María
Hernandez, Olegario
Bó, Gabriel
Palma, Gustavo Adolfo
author_role author
author2 Piccardi, Mónica Belén
Arroquy, Jose Ignacio
Fumagalli, Arnaldo Enrique
Sumampa Coria, María
Hernandez, Olegario
Bó, Gabriel
Palma, Gustavo Adolfo
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Ganado de Carne
Pastoreo
Gestación
Monensina
Hormonas
Beef Cattle
Grazing
Pregnancy
Monensin
Hormones
Región Semiárida, Argentina
Tasa de Embarazo
topic Ganado de Carne
Pastoreo
Gestación
Monensina
Hormonas
Beef Cattle
Grazing
Pregnancy
Monensin
Hormones
Región Semiárida, Argentina
Tasa de Embarazo
dc.description.none.fl_txt_mv The objectives of this study were 1) to determine the effect of monensin treatment, alone or combined with a hormonal estrus synchronization treatment, on the pregnancy rate of lactating beef cows, and 2) to evaluate the effect of monensin capsule administration on ruminal metabolism in steers. In experiment 1, ninety-four cows were selected from a 300 cow herd. The experimental design used was a 2 x 2 factorial with the administration of monensin capsule as first factor (M1 = with monensin vs. M0 = without monensin) and hormonal treatment as second factor (H1 = with hormonal treatment vs. H0 = no hormonal treatment). Thirty-eight days before the beginning of the breeding season, cows were randomly assigned to the first factor, and thirty days later to the second factor, resulting in four treatments: M1H0, M1H1, M0H0 and M0H1. Cow were exposed to bull (bull/cow ratio 1:20) from day 0 (day 0 = start of the breeding season and 38 days after monensin capsule administration) to day 50. Pregnancy diagnosis was performed at 30, 60 and 80 days after start breeding season by ultrasonography. In experiment 2, eight ruminally cannulated crossbred beef steers were randomly assigned to two treatments (M1 and M0). To determine proportion of volatile fatty acids (VFA), ruminal fluid samples were taken on days 0, 40 and 77 of the experimental period, at 0, 4 and 12 h after grazing. In experiment 1, treatments whit monensin did not improve pregnancy rate (P = 0.95), however, hormonal treatment resulted in grater pregnancy rates (P = 0.03). In experiment 2, the proportion of VFA in ruminal fluid of steers was significantly different between treatments. The highest proportion of propionate was found in ruminal fluid from M1 treatment at 12 h after grazing (P = 0.04). In conclusion, the treatment with monensin increased the proportion of propionate. The result might suggest that energy balance was improved in steers, without improvement in cow´s pregnancy rates. Treatment with monensin alone did not improve pregnancy rate, nor did treatment with monensin enhance the pregnancy rate when a hormonal synchronisation treatment was given. Nevertheless, the use of a hormonal treatment increased pregnancy rate, suggesting that it could be used as a suitable tool to enhance the productivity in cows with marginal body condition score
EEA Santiago del Estero
Fil: Reineri, Pablo Sebastian. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; Argentina
Fil: Piccardi, Mónica Belén. Instituto de Bionanotecnología del NOA (CONICET-UNSE). Laboratorio de Producción Animal; Argentina
Fil: Arroquy, Jose Ignacio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; Argentina
Fil: Fumagalli, Arnaldo Enrique. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; Argentina
Fil: Sumampa Coria, María. Instituto de Bionanotecnología del NOA (CONICET-UNSE). Laboratorio de Producción Animal; Argentina
Fil: Hernandez, Olegario. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina
Fil: Bo, Gabriel Amilcar. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina. Institute of Animal Reproduction Córdoba; Argentina
Fil: Palma, Gustavo Adolfo. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; Argentina. Instituto de Bionanotecnología del NOA (CONICET-UNSE). Laboratorio de Producción Animal; Argentina
description The objectives of this study were 1) to determine the effect of monensin treatment, alone or combined with a hormonal estrus synchronization treatment, on the pregnancy rate of lactating beef cows, and 2) to evaluate the effect of monensin capsule administration on ruminal metabolism in steers. In experiment 1, ninety-four cows were selected from a 300 cow herd. The experimental design used was a 2 x 2 factorial with the administration of monensin capsule as first factor (M1 = with monensin vs. M0 = without monensin) and hormonal treatment as second factor (H1 = with hormonal treatment vs. H0 = no hormonal treatment). Thirty-eight days before the beginning of the breeding season, cows were randomly assigned to the first factor, and thirty days later to the second factor, resulting in four treatments: M1H0, M1H1, M0H0 and M0H1. Cow were exposed to bull (bull/cow ratio 1:20) from day 0 (day 0 = start of the breeding season and 38 days after monensin capsule administration) to day 50. Pregnancy diagnosis was performed at 30, 60 and 80 days after start breeding season by ultrasonography. In experiment 2, eight ruminally cannulated crossbred beef steers were randomly assigned to two treatments (M1 and M0). To determine proportion of volatile fatty acids (VFA), ruminal fluid samples were taken on days 0, 40 and 77 of the experimental period, at 0, 4 and 12 h after grazing. In experiment 1, treatments whit monensin did not improve pregnancy rate (P = 0.95), however, hormonal treatment resulted in grater pregnancy rates (P = 0.03). In experiment 2, the proportion of VFA in ruminal fluid of steers was significantly different between treatments. The highest proportion of propionate was found in ruminal fluid from M1 treatment at 12 h after grazing (P = 0.04). In conclusion, the treatment with monensin increased the proportion of propionate. The result might suggest that energy balance was improved in steers, without improvement in cow´s pregnancy rates. Treatment with monensin alone did not improve pregnancy rate, nor did treatment with monensin enhance the pregnancy rate when a hormonal synchronisation treatment was given. Nevertheless, the use of a hormonal treatment increased pregnancy rate, suggesting that it could be used as a suitable tool to enhance the productivity in cows with marginal body condition score
publishDate 2018
dc.date.none.fl_str_mv 2018-06-06T15:12:29Z
2018-06-06T15:12:29Z
2018-03
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/20.500.12123/2559
http://www.cbra.org.br/portal/downloads/publicacoes/animalreproduction/issues/download/v15/v15n1/p56-63%20(AR-2017-0032).pdf
1806-9614
1984-3143
https://doi.org/10.21451/1984-3143-2017-AR0032
url http://hdl.handle.net/20.500.12123/2559
http://www.cbra.org.br/portal/downloads/publicacoes/animalreproduction/issues/download/v15/v15n1/p56-63%20(AR-2017-0032).pdf
https://doi.org/10.21451/1984-3143-2017-AR0032
identifier_str_mv 1806-9614
1984-3143
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Animal Reproduction 15 (1) : 56-63. (Jan.-Mar. 2018)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
_version_ 1846143501556776960
score 12.712165

Publicaciones similares