Bovine coccidiosis: Retrospective study in Central Argentina

Autores
Vilatuña, E.J.; Canton, German Jose; Morrell, Eleonora Lidia; Lloberas, María Mercedes; Garcia, Juan Agustin
Año de publicación
2026
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Bovine coccidiosis is a gastrointestinal disease of cattle with worldwide distribution caused by protozoan parasites of the genus Eimeria. Bovine coccidiosis mainly affects calves worldwide, frequently triggered by stressful management events, with consequent impact on cattle production and economic outcome. Most reports are from subtropical to tropical regions, where environmental conditions favor continuous oocyst survival and dissemination. In the present study we describe 63 outbreaks of bovine coccidiosis that occurred in the central region of Argentina, recorded by the Veterinary Specialized Diagnostic Service (SDVE) INTA Balcarce. Epidemiological information and clinical signs were registered, and 43 necropsies from 35 outbreaks were performed, followed by histopathological evaluation. In addition, 192 fecal samples from 52 outbreaks were analyzed for oocysts per gram of feces and eggs per gram of feces quantification, for identification of Eimeria spp. and gastrointestinal nematodes, respectively. Outbreaks occurred throughout the year but occurred significantly more often in autumn and predominantly in cow-calf systems. Calves younger than 12 months were the most affected group, with outbreaks commonly associated to stress factors such as weaning, recent transportation, and overcrowding. Mean morbidity and mortality were 5.6 % and 2.6 %, respectively. Affected animals generally presented diarrhea containing blood and/or mucosal debris and nervous signs were frequently recorded. Gross findings included multifocal to coalescing segmental hemorrhages in the large intestine. Histopathological findings revealed diffuse necrotizing and mononuclear enteritis with abundant intraepithelial parasitic structures consistent with Eimeria zuernii and E. bovid. Oocyst counts in feces varied widely, from 0 up to 2,240,000 per gram. Overall, a high prevalence of bovine coccidiosis in central Argentina was evident, mostly under suboptimal husbandry conditions. The findings provide valuable insights into the epidemiology and pathology of the disease and may contribute to more effective diagnostic approaches and control strategies in cattle production systems.
EEA Balcarce
Fil: Vilatuña, E.J. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fil: Vilatuña, E.J: Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fil: Cantón, Germán José. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fil: Canton, German Jose. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fil: Morrell, Eleonora. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fil: Morrell, Eleonora. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fil: Lloberas, María Mercedes. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fil: Lloberas, Maria Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) . Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fil: García, Juan Agustín. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fil: Garcia, Juan Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fuente
Veterinary Parasitology: Regional Studies and Reports 67, 101410 (January 2026)
Materia
Rumiantes
Ganado Bovino
Parásitos
Coccidiosis
Argentina
Enfermedad de los Animales
Ruminants
Cattle
Parasites
Animal Diseases
Nivel de accesibilidad
acceso restringido
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
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spelling Bovine coccidiosis: Retrospective study in Central ArgentinaVilatuña, E.J.Canton, German JoseMorrell, Eleonora LidiaLloberas, María MercedesGarcia, Juan AgustinRumiantesGanado BovinoParásitosCoccidiosisArgentinaEnfermedad de los AnimalesRuminantsCattleParasitesAnimal DiseasesBovine coccidiosis is a gastrointestinal disease of cattle with worldwide distribution caused by protozoan parasites of the genus Eimeria. Bovine coccidiosis mainly affects calves worldwide, frequently triggered by stressful management events, with consequent impact on cattle production and economic outcome. Most reports are from subtropical to tropical regions, where environmental conditions favor continuous oocyst survival and dissemination. In the present study we describe 63 outbreaks of bovine coccidiosis that occurred in the central region of Argentina, recorded by the Veterinary Specialized Diagnostic Service (SDVE) INTA Balcarce. Epidemiological information and clinical signs were registered, and 43 necropsies from 35 outbreaks were performed, followed by histopathological evaluation. In addition, 192 fecal samples from 52 outbreaks were analyzed for oocysts per gram of feces and eggs per gram of feces quantification, for identification of Eimeria spp. and gastrointestinal nematodes, respectively. Outbreaks occurred throughout the year but occurred significantly more often in autumn and predominantly in cow-calf systems. Calves younger than 12 months were the most affected group, with outbreaks commonly associated to stress factors such as weaning, recent transportation, and overcrowding. Mean morbidity and mortality were 5.6 % and 2.6 %, respectively. Affected animals generally presented diarrhea containing blood and/or mucosal debris and nervous signs were frequently recorded. Gross findings included multifocal to coalescing segmental hemorrhages in the large intestine. Histopathological findings revealed diffuse necrotizing and mononuclear enteritis with abundant intraepithelial parasitic structures consistent with Eimeria zuernii and E. bovid. Oocyst counts in feces varied widely, from 0 up to 2,240,000 per gram. Overall, a high prevalence of bovine coccidiosis in central Argentina was evident, mostly under suboptimal husbandry conditions. The findings provide valuable insights into the epidemiology and pathology of the disease and may contribute to more effective diagnostic approaches and control strategies in cattle production systems.EEA BalcarceFil: Vilatuña, E.J. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); ArgentinaFil: Vilatuña, E.J: Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); ArgentinaFil: Cantón, Germán José. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); ArgentinaFil: Canton, German Jose. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); ArgentinaFil: Morrell, Eleonora. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); ArgentinaFil: Morrell, Eleonora. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); ArgentinaFil: Lloberas, María Mercedes. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); ArgentinaFil: Lloberas, Maria Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) . Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); ArgentinaFil: García, Juan Agustín. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); ArgentinaFil: Garcia, Juan Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); ArgentinaElsevier2026-01-09T17:21:02Z2026-01-09T17:21:02Z2026-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/24979https://www.sciencedirect.com/science/article/abs/pii/S24059390250021872405-9390 (online)https://doi.org/10.1016/j.vprsr.2025.101410Veterinary Parasitology: Regional Studies and Reports 67, 101410 (January 2026)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repograntAgreement/INTA/2019-RIST-E5-I111-001, Laboratorios de Diagnóstico Veterinarioinfo:eu-repo/semantics/restrictedAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2026-01-15T11:41:42Zoai:localhost:20.500.12123/24979instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2026-01-15 11:41:42.921INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Bovine coccidiosis: Retrospective study in Central Argentina
title Bovine coccidiosis: Retrospective study in Central Argentina
spellingShingle Bovine coccidiosis: Retrospective study in Central Argentina
Vilatuña, E.J.
Rumiantes
Ganado Bovino
Parásitos
Coccidiosis
Argentina
Enfermedad de los Animales
Ruminants
Cattle
Parasites
Animal Diseases
title_short Bovine coccidiosis: Retrospective study in Central Argentina
title_full Bovine coccidiosis: Retrospective study in Central Argentina
title_fullStr Bovine coccidiosis: Retrospective study in Central Argentina
title_full_unstemmed Bovine coccidiosis: Retrospective study in Central Argentina
title_sort Bovine coccidiosis: Retrospective study in Central Argentina
dc.creator.none.fl_str_mv Vilatuña, E.J.
Canton, German Jose
Morrell, Eleonora Lidia
Lloberas, María Mercedes
Garcia, Juan Agustin
author Vilatuña, E.J.
author_facet Vilatuña, E.J.
Canton, German Jose
Morrell, Eleonora Lidia
Lloberas, María Mercedes
Garcia, Juan Agustin
author_role author
author2 Canton, German Jose
Morrell, Eleonora Lidia
Lloberas, María Mercedes
Garcia, Juan Agustin
author2_role author
author
author
author
dc.subject.none.fl_str_mv Rumiantes
Ganado Bovino
Parásitos
Coccidiosis
Argentina
Enfermedad de los Animales
Ruminants
Cattle
Parasites
Animal Diseases
topic Rumiantes
Ganado Bovino
Parásitos
Coccidiosis
Argentina
Enfermedad de los Animales
Ruminants
Cattle
Parasites
Animal Diseases
dc.description.none.fl_txt_mv Bovine coccidiosis is a gastrointestinal disease of cattle with worldwide distribution caused by protozoan parasites of the genus Eimeria. Bovine coccidiosis mainly affects calves worldwide, frequently triggered by stressful management events, with consequent impact on cattle production and economic outcome. Most reports are from subtropical to tropical regions, where environmental conditions favor continuous oocyst survival and dissemination. In the present study we describe 63 outbreaks of bovine coccidiosis that occurred in the central region of Argentina, recorded by the Veterinary Specialized Diagnostic Service (SDVE) INTA Balcarce. Epidemiological information and clinical signs were registered, and 43 necropsies from 35 outbreaks were performed, followed by histopathological evaluation. In addition, 192 fecal samples from 52 outbreaks were analyzed for oocysts per gram of feces and eggs per gram of feces quantification, for identification of Eimeria spp. and gastrointestinal nematodes, respectively. Outbreaks occurred throughout the year but occurred significantly more often in autumn and predominantly in cow-calf systems. Calves younger than 12 months were the most affected group, with outbreaks commonly associated to stress factors such as weaning, recent transportation, and overcrowding. Mean morbidity and mortality were 5.6 % and 2.6 %, respectively. Affected animals generally presented diarrhea containing blood and/or mucosal debris and nervous signs were frequently recorded. Gross findings included multifocal to coalescing segmental hemorrhages in the large intestine. Histopathological findings revealed diffuse necrotizing and mononuclear enteritis with abundant intraepithelial parasitic structures consistent with Eimeria zuernii and E. bovid. Oocyst counts in feces varied widely, from 0 up to 2,240,000 per gram. Overall, a high prevalence of bovine coccidiosis in central Argentina was evident, mostly under suboptimal husbandry conditions. The findings provide valuable insights into the epidemiology and pathology of the disease and may contribute to more effective diagnostic approaches and control strategies in cattle production systems.
EEA Balcarce
Fil: Vilatuña, E.J. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fil: Vilatuña, E.J: Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fil: Cantón, Germán José. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fil: Canton, German Jose. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fil: Morrell, Eleonora. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fil: Morrell, Eleonora. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fil: Lloberas, María Mercedes. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fil: Lloberas, Maria Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) . Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fil: García, Juan Agustín. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
Fil: Garcia, Juan Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible (IPADS); Argentina
description Bovine coccidiosis is a gastrointestinal disease of cattle with worldwide distribution caused by protozoan parasites of the genus Eimeria. Bovine coccidiosis mainly affects calves worldwide, frequently triggered by stressful management events, with consequent impact on cattle production and economic outcome. Most reports are from subtropical to tropical regions, where environmental conditions favor continuous oocyst survival and dissemination. In the present study we describe 63 outbreaks of bovine coccidiosis that occurred in the central region of Argentina, recorded by the Veterinary Specialized Diagnostic Service (SDVE) INTA Balcarce. Epidemiological information and clinical signs were registered, and 43 necropsies from 35 outbreaks were performed, followed by histopathological evaluation. In addition, 192 fecal samples from 52 outbreaks were analyzed for oocysts per gram of feces and eggs per gram of feces quantification, for identification of Eimeria spp. and gastrointestinal nematodes, respectively. Outbreaks occurred throughout the year but occurred significantly more often in autumn and predominantly in cow-calf systems. Calves younger than 12 months were the most affected group, with outbreaks commonly associated to stress factors such as weaning, recent transportation, and overcrowding. Mean morbidity and mortality were 5.6 % and 2.6 %, respectively. Affected animals generally presented diarrhea containing blood and/or mucosal debris and nervous signs were frequently recorded. Gross findings included multifocal to coalescing segmental hemorrhages in the large intestine. Histopathological findings revealed diffuse necrotizing and mononuclear enteritis with abundant intraepithelial parasitic structures consistent with Eimeria zuernii and E. bovid. Oocyst counts in feces varied widely, from 0 up to 2,240,000 per gram. Overall, a high prevalence of bovine coccidiosis in central Argentina was evident, mostly under suboptimal husbandry conditions. The findings provide valuable insights into the epidemiology and pathology of the disease and may contribute to more effective diagnostic approaches and control strategies in cattle production systems.
publishDate 2026
dc.date.none.fl_str_mv 2026-01-09T17:21:02Z
2026-01-09T17:21:02Z
2026-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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info:ar-repo/semantics/articulo
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12123/24979
https://www.sciencedirect.com/science/article/abs/pii/S2405939025002187
2405-9390 (online)
https://doi.org/10.1016/j.vprsr.2025.101410
url http://hdl.handle.net/20.500.12123/24979
https://www.sciencedirect.com/science/article/abs/pii/S2405939025002187
https://doi.org/10.1016/j.vprsr.2025.101410
identifier_str_mv 2405-9390 (online)
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repograntAgreement/INTA/2019-RIST-E5-I111-001, Laboratorios de Diagnóstico Veterinario
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
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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.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Veterinary Parasitology: Regional Studies and Reports 67, 101410 (January 2026)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
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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
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