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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/92463
Ver los metadatos del registro completo
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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) |
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CONICET Digital (CONICET) |
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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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1846083197420437504 |
score |
13.22299 |