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; Coria, Maria Sumampa; Hernandez, Olegario; Bo, Gabriel Amilcar; 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 × 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.
Fil: Reineri, Pablo Sebastian. Instituto Nacional de Tecnología Agropecuaria; Argentina
Fil: Piccardi, Mónica Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Arroquy, Jose Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones y Transferencia de Santiago del Estero. Universidad Nacional de Santiago del Estero. Centro de Investigaciones y Transferencia de Santiago del Estero; Argentina
Fil: Fumagalli, Arnaldo. Instituto Nacional de Tecnología Agropecuaria; Argentina. Universidad Nacional de Santiago del Estero; Argentina
Fil: Coria, Maria Sumampa. Universidad Nacional de Santiago del Estero. Instituto de Bionanotecnología del Noa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Bionanotecnología del Noa; Argentina
Fil: Hernández, Olegario. Instituto Nacional de Tecnología Agropecuaria; Argentina
Fil: Bo,Gabriel. Universidad Nacional de Córdoba; Argentina. Instituto de Reproduccion Animal Córdoba; Argentina
Fil: Palma, Gustavo Adolfo. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; Argentina
Materia
HORMONE
MONENSIN
PREGNANCY RATE
VOLATILE FATTY ACIDS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/92463
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/92463
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
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 EnriqueCoria, Maria SumampaHernandez, OlegarioBo, Gabriel AmilcarPalma, Gustavo AdolfoHORMONEMONENSINPREGNANCY RATEVOLATILE FATTY ACIDShttps://purl.org/becyt/ford/4.2https://purl.org/becyt/ford/4The 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 × 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.Fil: Reineri, Pablo Sebastian. Instituto Nacional de Tecnología Agropecuaria; ArgentinaFil: Piccardi, Mónica Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Arroquy, Jose Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones y Transferencia de Santiago del Estero. Universidad Nacional de Santiago del Estero. Centro de Investigaciones y Transferencia de Santiago del Estero; ArgentinaFil: Fumagalli, Arnaldo. Instituto Nacional de Tecnología Agropecuaria; Argentina. Universidad Nacional de Santiago del Estero; ArgentinaFil: Coria, Maria Sumampa. Universidad Nacional de Santiago del Estero. Instituto de Bionanotecnología del Noa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Bionanotecnología del Noa; ArgentinaFil: Hernández, Olegario. Instituto Nacional de Tecnología Agropecuaria; ArgentinaFil: Bo,Gabriel. Universidad Nacional de Córdoba; Argentina. Instituto de Reproduccion Animal Córdoba; ArgentinaFil: Palma, Gustavo Adolfo. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; ArgentinaColégio Brasileiro de Reprodução Animal2018-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/92463Reineri, Pablo Sebastian; Piccardi, Mónica Belén; Arroquy, Jose Ignacio; Fumagalli, Arnaldo Enrique; Coria, Maria Sumampa; et al.; Hormones and monensin use to improve pregnancy rates in grazing lactating beef cows in the semiarid region of Argentina; Colégio Brasileiro de Reprodução Animal; Animal Reproduction; 15; 1; 6-2018; 56-631806-96141984-3143CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.21451/1984-3143-2017-AR0032info:eu-repo/semantics/altIdentifier/url/https://www.animal-reproduction.org/article/doi/10.21451/1984-3143-2017-AR0032info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:05:30Zoai:ri.conicet.gov.ar:11336/92463instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:05:30.763CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
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
HORMONE
MONENSIN
PREGNANCY RATE
VOLATILE FATTY ACIDS
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
Coria, Maria Sumampa
Hernandez, Olegario
Bo, Gabriel Amilcar
Palma, Gustavo Adolfo
author Reineri, Pablo Sebastian
author_facet Reineri, Pablo Sebastian
Piccardi, Mónica Belén
Arroquy, Jose Ignacio
Fumagalli, Arnaldo Enrique
Coria, Maria Sumampa
Hernandez, Olegario
Bo, Gabriel Amilcar
Palma, Gustavo Adolfo
author_role author
author2 Piccardi, Mónica Belén
Arroquy, Jose Ignacio
Fumagalli, Arnaldo Enrique
Coria, Maria Sumampa
Hernandez, Olegario
Bo, Gabriel Amilcar
Palma, Gustavo Adolfo
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv HORMONE
MONENSIN
PREGNANCY RATE
VOLATILE FATTY ACIDS
topic HORMONE
MONENSIN
PREGNANCY RATE
VOLATILE FATTY ACIDS
purl_subject.fl_str_mv https://purl.org/becyt/ford/4.2
https://purl.org/becyt/ford/4
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 × 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.
Fil: Reineri, Pablo Sebastian. Instituto Nacional de Tecnología Agropecuaria; Argentina
Fil: Piccardi, Mónica Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Arroquy, Jose Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones y Transferencia de Santiago del Estero. Universidad Nacional de Santiago del Estero. Centro de Investigaciones y Transferencia de Santiago del Estero; Argentina
Fil: Fumagalli, Arnaldo. Instituto Nacional de Tecnología Agropecuaria; Argentina. Universidad Nacional de Santiago del Estero; Argentina
Fil: Coria, Maria Sumampa. Universidad Nacional de Santiago del Estero. Instituto de Bionanotecnología del Noa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Bionanotecnología del Noa; Argentina
Fil: Hernández, Olegario. Instituto Nacional de Tecnología Agropecuaria; Argentina
Fil: Bo,Gabriel. Universidad Nacional de Córdoba; Argentina. Instituto de Reproduccion Animal Córdoba; Argentina
Fil: Palma, Gustavo Adolfo. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; 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 × 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
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/11336/92463
Reineri, Pablo Sebastian; Piccardi, Mónica Belén; Arroquy, Jose Ignacio; Fumagalli, Arnaldo Enrique; Coria, Maria Sumampa; et al.; Hormones and monensin use to improve pregnancy rates in grazing lactating beef cows in the semiarid region of Argentina; Colégio Brasileiro de Reprodução Animal; Animal Reproduction; 15; 1; 6-2018; 56-63
1806-9614
1984-3143
CONICET Digital
CONICET
url http://hdl.handle.net/11336/92463
identifier_str_mv Reineri, Pablo Sebastian; Piccardi, Mónica Belén; Arroquy, Jose Ignacio; Fumagalli, Arnaldo Enrique; Coria, Maria Sumampa; et al.; Hormones and monensin use to improve pregnancy rates in grazing lactating beef cows in the semiarid region of Argentina; Colégio Brasileiro de Reprodução Animal; Animal Reproduction; 15; 1; 6-2018; 56-63
1806-9614
1984-3143
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.21451/1984-3143-2017-AR0032
info:eu-repo/semantics/altIdentifier/url/https://www.animal-reproduction.org/article/doi/10.21451/1984-3143-2017-AR0032
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Colégio Brasileiro de Reprodução Animal
publisher.none.fl_str_mv Colégio Brasileiro de Reprodução Animal
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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