Impacto de factores de manejo sobre la concepción en vaquillonas lecheras

Autores
Vera, Milba Marina; Piccardi, Mónica Belén; Maciel, Martin; Franco, Liliana; Mezzadra, Carlos Alberto; Balzarini, Monica Graciela
Año de publicación
2020
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Increasing the number of pregnant heifers per time unit improves reproductive efficiency in dairy herds. The objective of this work was to analyze the effect of management factors on conception. Reproductive events of 2532 heifers throughout 37 years were analyzed adjusting proportional risk models. The interval from the first service to conception (IPSC) was defined as the days passed from the start of the service period (IPS) to conception. The observation period per animal was 90 days. Models adjusted for IPSC include effects of age at the start of the service period (IPS), year, number and season of services, conception rate of bulls, and year-to-season interaction with services. The Weibull model adjusts the IPSC variation pattern. Conception was lower in heifers under 18 months, in the 2nd and 3rd service, and when bulls with less conception rate were used. Conception was higher in fall services by 1.17 times compared to spring services. Identifying management factors affecting days to conception in heifers allows developing strategies to improve reproductive efficiency in dairy herds.
Fil: Vera, Milba Marina. Instituto Nacional de Tecnología Agropecuaria; Argentina
Fil: Piccardi, Mónica Belén. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Desarrollo Rural. Area de Estadística y Biometría; Argentina
Fil: Maciel, Martin. Instituto Nacional de Tecnología Agropecuaria; Argentina
Fil: Franco, Liliana. Instituto Nacional de Tecnología Agropecuaria; Argentina
Fil: Mezzadra, Carlos Alberto. Instituto Nacional de Tecnología Agropecuaria; Argentina
Fil: Balzarini, Monica Graciela. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Desarrollo Rural. Area de Estadística y Biometría; Argentina
Materia
CONCEPTIORATES
PROPORTIONAL HAZARD MODELS
REPRODUCTIVE EFFICIENCY
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/145914
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Impacto de factores de manejo sobre la concepción en vaquillonas lecherasImpact of management factors on days to conception in dairy heifersVera, Milba MarinaPiccardi, Mónica BelénMaciel, MartinFranco, LilianaMezzadra, Carlos AlbertoBalzarini, Monica GracielaCONCEPTIORATESPROPORTIONAL HAZARD MODELSREPRODUCTIVE EFFICIENCYhttps://purl.org/becyt/ford/4.2https://purl.org/becyt/ford/4Increasing the number of pregnant heifers per time unit improves reproductive efficiency in dairy herds. The objective of this work was to analyze the effect of management factors on conception. Reproductive events of 2532 heifers throughout 37 years were analyzed adjusting proportional risk models. The interval from the first service to conception (IPSC) was defined as the days passed from the start of the service period (IPS) to conception. The observation period per animal was 90 days. Models adjusted for IPSC include effects of age at the start of the service period (IPS), year, number and season of services, conception rate of bulls, and year-to-season interaction with services. The Weibull model adjusts the IPSC variation pattern. Conception was lower in heifers under 18 months, in the 2nd and 3rd service, and when bulls with less conception rate were used. Conception was higher in fall services by 1.17 times compared to spring services. Identifying management factors affecting days to conception in heifers allows developing strategies to improve reproductive efficiency in dairy herds.Fil: Vera, Milba Marina. Instituto Nacional de Tecnología Agropecuaria; ArgentinaFil: Piccardi, Mónica Belén. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Desarrollo Rural. Area de Estadística y Biometría; ArgentinaFil: Maciel, Martin. Instituto Nacional de Tecnología Agropecuaria; ArgentinaFil: Franco, Liliana. Instituto Nacional de Tecnología Agropecuaria; ArgentinaFil: Mezzadra, Carlos Alberto. Instituto Nacional de Tecnología Agropecuaria; ArgentinaFil: Balzarini, Monica Graciela. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Desarrollo Rural. Area de Estadística y Biometría; ArgentinaUniversidad Nacional de Córdoba2020-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/145914Vera, Milba Marina; Piccardi, Mónica Belén; Maciel, Martin; Franco, Liliana; Mezzadra, Carlos Alberto; et al.; Impacto de factores de manejo sobre la concepción en vaquillonas lecheras; Universidad Nacional de Córdoba; AgriScientia; 37; 1; 6-2020; 33-401668-298XCONICET DigitalCONICETspainfo:eu-repo/semantics/altIdentifier/doi/10.31047/1668.298x.v37.n1.25979info:eu-repo/semantics/altIdentifier/url/https://revistas.unc.edu.ar/index.php/agris/article/view/25979info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:43:09Zoai:ri.conicet.gov.ar:11336/145914instacron: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:34982025-09-29 09:43:09.807CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Impacto de factores de manejo sobre la concepción en vaquillonas lecheras
Impact of management factors on days to conception in dairy heifers
title Impacto de factores de manejo sobre la concepción en vaquillonas lecheras
spellingShingle Impacto de factores de manejo sobre la concepción en vaquillonas lecheras
Vera, Milba Marina
CONCEPTIORATES
PROPORTIONAL HAZARD MODELS
REPRODUCTIVE EFFICIENCY
title_short Impacto de factores de manejo sobre la concepción en vaquillonas lecheras
title_full Impacto de factores de manejo sobre la concepción en vaquillonas lecheras
title_fullStr Impacto de factores de manejo sobre la concepción en vaquillonas lecheras
title_full_unstemmed Impacto de factores de manejo sobre la concepción en vaquillonas lecheras
title_sort Impacto de factores de manejo sobre la concepción en vaquillonas lecheras
dc.creator.none.fl_str_mv Vera, Milba Marina
Piccardi, Mónica Belén
Maciel, Martin
Franco, Liliana
Mezzadra, Carlos Alberto
Balzarini, Monica Graciela
author Vera, Milba Marina
author_facet Vera, Milba Marina
Piccardi, Mónica Belén
Maciel, Martin
Franco, Liliana
Mezzadra, Carlos Alberto
Balzarini, Monica Graciela
author_role author
author2 Piccardi, Mónica Belén
Maciel, Martin
Franco, Liliana
Mezzadra, Carlos Alberto
Balzarini, Monica Graciela
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv CONCEPTIORATES
PROPORTIONAL HAZARD MODELS
REPRODUCTIVE EFFICIENCY
topic CONCEPTIORATES
PROPORTIONAL HAZARD MODELS
REPRODUCTIVE EFFICIENCY
purl_subject.fl_str_mv https://purl.org/becyt/ford/4.2
https://purl.org/becyt/ford/4
dc.description.none.fl_txt_mv Increasing the number of pregnant heifers per time unit improves reproductive efficiency in dairy herds. The objective of this work was to analyze the effect of management factors on conception. Reproductive events of 2532 heifers throughout 37 years were analyzed adjusting proportional risk models. The interval from the first service to conception (IPSC) was defined as the days passed from the start of the service period (IPS) to conception. The observation period per animal was 90 days. Models adjusted for IPSC include effects of age at the start of the service period (IPS), year, number and season of services, conception rate of bulls, and year-to-season interaction with services. The Weibull model adjusts the IPSC variation pattern. Conception was lower in heifers under 18 months, in the 2nd and 3rd service, and when bulls with less conception rate were used. Conception was higher in fall services by 1.17 times compared to spring services. Identifying management factors affecting days to conception in heifers allows developing strategies to improve reproductive efficiency in dairy herds.
Fil: Vera, Milba Marina. Instituto Nacional de Tecnología Agropecuaria; Argentina
Fil: Piccardi, Mónica Belén. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Desarrollo Rural. Area de Estadística y Biometría; Argentina
Fil: Maciel, Martin. Instituto Nacional de Tecnología Agropecuaria; Argentina
Fil: Franco, Liliana. Instituto Nacional de Tecnología Agropecuaria; Argentina
Fil: Mezzadra, Carlos Alberto. Instituto Nacional de Tecnología Agropecuaria; Argentina
Fil: Balzarini, Monica Graciela. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Desarrollo Rural. Area de Estadística y Biometría; Argentina
description Increasing the number of pregnant heifers per time unit improves reproductive efficiency in dairy herds. The objective of this work was to analyze the effect of management factors on conception. Reproductive events of 2532 heifers throughout 37 years were analyzed adjusting proportional risk models. The interval from the first service to conception (IPSC) was defined as the days passed from the start of the service period (IPS) to conception. The observation period per animal was 90 days. Models adjusted for IPSC include effects of age at the start of the service period (IPS), year, number and season of services, conception rate of bulls, and year-to-season interaction with services. The Weibull model adjusts the IPSC variation pattern. Conception was lower in heifers under 18 months, in the 2nd and 3rd service, and when bulls with less conception rate were used. Conception was higher in fall services by 1.17 times compared to spring services. Identifying management factors affecting days to conception in heifers allows developing strategies to improve reproductive efficiency in dairy herds.
publishDate 2020
dc.date.none.fl_str_mv 2020-06
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/11336/145914
Vera, Milba Marina; Piccardi, Mónica Belén; Maciel, Martin; Franco, Liliana; Mezzadra, Carlos Alberto; et al.; Impacto de factores de manejo sobre la concepción en vaquillonas lecheras; Universidad Nacional de Córdoba; AgriScientia; 37; 1; 6-2020; 33-40
1668-298X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/145914
identifier_str_mv Vera, Milba Marina; Piccardi, Mónica Belén; Maciel, Martin; Franco, Liliana; Mezzadra, Carlos Alberto; et al.; Impacto de factores de manejo sobre la concepción en vaquillonas lecheras; Universidad Nacional de Córdoba; AgriScientia; 37; 1; 6-2020; 33-40
1668-298X
CONICET Digital
CONICET
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.31047/1668.298x.v37.n1.25979
info:eu-repo/semantics/altIdentifier/url/https://revistas.unc.edu.ar/index.php/agris/article/view/25979
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Universidad Nacional de Córdoba
publisher.none.fl_str_mv Universidad Nacional de Córdoba
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 13.070432

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