Some factors affecting the number of days open in Argentinean dairy herds
- Autores
- Piccardi, Mónica Belén; Capitaine Funes, A.; Balzarini, Monica Graciela; Bo, Gabriel Amilcar
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The objective of this study was to estimate the relative contribution of factors affecting how quickly cattle become pregnant in Argentine dairy herds. Data from 76,401 cows from 249 dairy herds were analyzed. A hazard model was used to explore days open (DO). The factors considered were milk yield, lactation number, calving season, and breeding technique (i.e., type of service: artificial insemination [AI], or combined service). Cows with lower milk yield had 1.09 to 1.38 higher likelihood to become pregnant than those with higher milk yield (P < 0.0001). The number of DO increased linearly with an increasing number of lactations (P < 0.0001). Cows calving in fall-winter had a shorter interval to conception than those calving in summer. The hazard rate for combined service was 1.27; therefore, cows with combined service were more likely to become pregnant during the observation period than those bred by AI. The difference in DO between cows of high versus low milk yield was smaller when dairies used AI as the main breeding technique than when they used combined service. Furthermore, dairies using mainly combined service had lower milk yield (5693.7 L) than those using mainly AI (7684.4 L). Although lactation number and calving season contributed to explain the number of DO, the influence of production level, the type of service, and the interaction between them was also associated with reproductive efficiency in Argentine dairy herds.
Fil: Piccardi, Mónica Belén. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Desarrollo Rural. Area de Estadística y Biometría; Argentina
Fil: Capitaine Funes, A.. DAIRYTECH S.R.L; Argentina
Fil: Balzarini, Monica Graciela. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Desarrollo Rural. Area de Estadística y Biometría; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba; Argentina
Fil: Bo, Gabriel Amilcar. Instituto de Reproduccion Animal Córdoba; Argentina. Universidad Nacional de Villa María. Instituto Académico Pedagógico de Ciencias Básicas y Aplicadas; Argentina - Materia
-
ARTIFICIAL INSEMINATION
HAZARD MODEL
MILK YIELD
NONPREGNANT COWS
REPRODUCTIVE PERFORMANCE - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/2269
Ver los metadatos del registro completo
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Some factors affecting the number of days open in Argentinean dairy herdsPiccardi, Mónica BelénCapitaine Funes, A.Balzarini, Monica GracielaBo, Gabriel AmilcarARTIFICIAL INSEMINATIONHAZARD MODELMILK YIELDNONPREGNANT COWSREPRODUCTIVE PERFORMANCEhttps://purl.org/becyt/ford/4.2https://purl.org/becyt/ford/4The objective of this study was to estimate the relative contribution of factors affecting how quickly cattle become pregnant in Argentine dairy herds. Data from 76,401 cows from 249 dairy herds were analyzed. A hazard model was used to explore days open (DO). The factors considered were milk yield, lactation number, calving season, and breeding technique (i.e., type of service: artificial insemination [AI], or combined service). Cows with lower milk yield had 1.09 to 1.38 higher likelihood to become pregnant than those with higher milk yield (P < 0.0001). The number of DO increased linearly with an increasing number of lactations (P < 0.0001). Cows calving in fall-winter had a shorter interval to conception than those calving in summer. The hazard rate for combined service was 1.27; therefore, cows with combined service were more likely to become pregnant during the observation period than those bred by AI. The difference in DO between cows of high versus low milk yield was smaller when dairies used AI as the main breeding technique than when they used combined service. Furthermore, dairies using mainly combined service had lower milk yield (5693.7 L) than those using mainly AI (7684.4 L). Although lactation number and calving season contributed to explain the number of DO, the influence of production level, the type of service, and the interaction between them was also associated with reproductive efficiency in Argentine dairy herds.Fil: Piccardi, Mónica Belén. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Desarrollo Rural. Area de Estadística y Biometría; ArgentinaFil: Capitaine Funes, A.. DAIRYTECH S.R.L; ArgentinaFil: Balzarini, Monica Graciela. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Desarrollo Rural. Area de Estadística y Biometría; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba; ArgentinaFil: Bo, Gabriel Amilcar. Instituto de Reproduccion Animal Córdoba; Argentina. Universidad Nacional de Villa María. Instituto Académico Pedagógico de Ciencias Básicas y Aplicadas; ArgentinaElsevier Science Inc.2013-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/2269Piccardi, Mónica Belén; Capitaine Funes, A.; Balzarini, Monica Graciela; Bo, Gabriel Amilcar; Some factors affecting the number of days open in Argentinean dairy herds; Elsevier Science Inc.; Theriogenology; 79; 5; 3-2013; 760-7650093-691Xenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0093691X12006401info:eu-repo/semantics/altIdentifier/doi/10.1016/j.theriogenology.2012.11.032info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:37:48Zoai:ri.conicet.gov.ar:11336/2269instacron: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 10:37:49.128CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Some factors affecting the number of days open in Argentinean dairy herds |
title |
Some factors affecting the number of days open in Argentinean dairy herds |
spellingShingle |
Some factors affecting the number of days open in Argentinean dairy herds Piccardi, Mónica Belén ARTIFICIAL INSEMINATION HAZARD MODEL MILK YIELD NONPREGNANT COWS REPRODUCTIVE PERFORMANCE |
title_short |
Some factors affecting the number of days open in Argentinean dairy herds |
title_full |
Some factors affecting the number of days open in Argentinean dairy herds |
title_fullStr |
Some factors affecting the number of days open in Argentinean dairy herds |
title_full_unstemmed |
Some factors affecting the number of days open in Argentinean dairy herds |
title_sort |
Some factors affecting the number of days open in Argentinean dairy herds |
dc.creator.none.fl_str_mv |
Piccardi, Mónica Belén Capitaine Funes, A. Balzarini, Monica Graciela Bo, Gabriel Amilcar |
author |
Piccardi, Mónica Belén |
author_facet |
Piccardi, Mónica Belén Capitaine Funes, A. Balzarini, Monica Graciela Bo, Gabriel Amilcar |
author_role |
author |
author2 |
Capitaine Funes, A. Balzarini, Monica Graciela Bo, Gabriel Amilcar |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
ARTIFICIAL INSEMINATION HAZARD MODEL MILK YIELD NONPREGNANT COWS REPRODUCTIVE PERFORMANCE |
topic |
ARTIFICIAL INSEMINATION HAZARD MODEL MILK YIELD NONPREGNANT COWS REPRODUCTIVE PERFORMANCE |
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 objective of this study was to estimate the relative contribution of factors affecting how quickly cattle become pregnant in Argentine dairy herds. Data from 76,401 cows from 249 dairy herds were analyzed. A hazard model was used to explore days open (DO). The factors considered were milk yield, lactation number, calving season, and breeding technique (i.e., type of service: artificial insemination [AI], or combined service). Cows with lower milk yield had 1.09 to 1.38 higher likelihood to become pregnant than those with higher milk yield (P < 0.0001). The number of DO increased linearly with an increasing number of lactations (P < 0.0001). Cows calving in fall-winter had a shorter interval to conception than those calving in summer. The hazard rate for combined service was 1.27; therefore, cows with combined service were more likely to become pregnant during the observation period than those bred by AI. The difference in DO between cows of high versus low milk yield was smaller when dairies used AI as the main breeding technique than when they used combined service. Furthermore, dairies using mainly combined service had lower milk yield (5693.7 L) than those using mainly AI (7684.4 L). Although lactation number and calving season contributed to explain the number of DO, the influence of production level, the type of service, and the interaction between them was also associated with reproductive efficiency in Argentine dairy herds. Fil: Piccardi, Mónica Belén. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Desarrollo Rural. Area de Estadística y Biometría; Argentina Fil: Capitaine Funes, A.. DAIRYTECH S.R.L; Argentina Fil: Balzarini, Monica Graciela. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Desarrollo Rural. Area de Estadística y Biometría; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba; Argentina Fil: Bo, Gabriel Amilcar. Instituto de Reproduccion Animal Córdoba; Argentina. Universidad Nacional de Villa María. Instituto Académico Pedagógico de Ciencias Básicas y Aplicadas; Argentina |
description |
The objective of this study was to estimate the relative contribution of factors affecting how quickly cattle become pregnant in Argentine dairy herds. Data from 76,401 cows from 249 dairy herds were analyzed. A hazard model was used to explore days open (DO). The factors considered were milk yield, lactation number, calving season, and breeding technique (i.e., type of service: artificial insemination [AI], or combined service). Cows with lower milk yield had 1.09 to 1.38 higher likelihood to become pregnant than those with higher milk yield (P < 0.0001). The number of DO increased linearly with an increasing number of lactations (P < 0.0001). Cows calving in fall-winter had a shorter interval to conception than those calving in summer. The hazard rate for combined service was 1.27; therefore, cows with combined service were more likely to become pregnant during the observation period than those bred by AI. The difference in DO between cows of high versus low milk yield was smaller when dairies used AI as the main breeding technique than when they used combined service. Furthermore, dairies using mainly combined service had lower milk yield (5693.7 L) than those using mainly AI (7684.4 L). Although lactation number and calving season contributed to explain the number of DO, the influence of production level, the type of service, and the interaction between them was also associated with reproductive efficiency in Argentine dairy herds. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-03 |
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/11336/2269 Piccardi, Mónica Belén; Capitaine Funes, A.; Balzarini, Monica Graciela; Bo, Gabriel Amilcar; Some factors affecting the number of days open in Argentinean dairy herds; Elsevier Science Inc.; Theriogenology; 79; 5; 3-2013; 760-765 0093-691X |
url |
http://hdl.handle.net/11336/2269 |
identifier_str_mv |
Piccardi, Mónica Belén; Capitaine Funes, A.; Balzarini, Monica Graciela; Bo, Gabriel Amilcar; Some factors affecting the number of days open in Argentinean dairy herds; Elsevier Science Inc.; Theriogenology; 79; 5; 3-2013; 760-765 0093-691X |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0093691X12006401 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.theriogenology.2012.11.032 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier Science Inc. |
publisher.none.fl_str_mv |
Elsevier Science Inc. |
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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1844614399505989632 |
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13.070432 |