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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha : |
27/08/2020 |
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Actualizado : |
05/09/2022 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
MACÍAS-RIOSECO, M.; SILVEIRA, C.S.; FRAGA, M.; CASAUX, M.L.; CABRERA, A.; FRANCIA, M.E.; REBOLLO, C.; MAYA, L.; ZARANTONELLI, L.; SUANES, A.; COLINA, R.; BUSCHIAZZO, A.; GIANNITTI, F.; RIET-CORREA, F. |
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Afiliación : |
MELISSA MACÍAS RIOSECO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay./Programa de Posgrado en Salud Animal, Facultad de Veterinaria, Universidad de la Republica, Montevideo, Uruguay; CAROLINE DA SILVA SILVEIRA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay./Programa de Posgrado en Salud Animal, Facultad de Veterinaria, Universidad de la Republica, Montevideo, Uruguay.; MARTIN FRAGA COTELO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARÍA LAURA CASAUX, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay./Programa de Posgrado en Salud Animal, Facultad de Veterinaria, Universidad de la Republica, Montevideo, Uruguay.; ANDRÉS CABRERA, Unidad de Biología Molecular, Institut Pasteur de Montevideo, Mataojo 2020, Montevideo, 11400, Uruguay.; MARÍA E. FRANCIA, Laboratory of Apicomplexan Biology, Institut Pasteur de Montevideo, Mataojo 2020, Montevideo, 11400, Uruguay.; CARLOS REBOLLO, Unidad de Biología Molecular, Institut Pasteur de Montevideo, Mataojo 2020, Montevideo, 11400, Uruguay.; LETICIA MAYA, Laboratorio de Virología Molecular, Centro Universitario Regional Litoral Norte, Universidad de la República, Gral Fructuoso Rivera 1350, Salto, 50000, Uruguay.; LETICIA ZARANTONELLI, Unidad Mixta Pasteur, Instituto Nacional de Investigación Agropecuaria, Institut Pasteur de Montevideo, Mataojo 2020, Montevideo, 11400, Uruguay.; ALEJANDRA SUANES, División de Laboratorios Veterinarios, Ministerio de Ganadería, Agricultura y Pesca, Constituyente 1476, Montevideo, 11200, Uruguay.; RODNEY COLINA, Laboratorio de Virología Molecular, Centro Universitario Regional Litoral Norte, Universidad de la República, Gral Fructuoso Rivera 1350, Salto, 50000, Uruguay .; ALEJANDRO BUSCHIAZZO, Laboratorio de Microbiología Molecular y Estructural, Institut Pasteur de Montevideo, Mataojo 2020, Montevideo, 11400, Uruguay.; FEDERICO GIANNITTI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FRANKLIN RIET-CORREA AMARAL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Causes of abortion in dairy cows in Uruguay. [Causas de aborto em bovinos de leite no Uruguai]. |
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Fecha de publicación : |
2020 |
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Fuente / Imprenta : |
Pesquisa Veterinaria Brasileira, 1 May 2020, Volume 40, Issue 5, Pages 325-332. OPEN ACCESS. DOI: https://doi.org/10.1590/1678-5150-pvb-6550 |
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DOI : |
10.1590/1678-5150-pvb-6550 |
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Idioma : |
Español |
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Notas : |
Article history: Received on December 3, 2019./Accepted for publication on December 26, 2019. This research was financially supported by Agencia Nacional de Investigación e Innovación (ANII), grant FSSA_X_2014_1_105696. The authors thank Yisell Perdomo, Cecilia Monesiglio, Anderson Saravia,Bruno Lopez, and all graduate students from the animal health platform at INIA, Jennifer McKenna from UW, Francisco Uzal, Karen Sverlow and Juliann Beingesser from CAHFS-UC Davis for valuable assistance. We are grateful to Luis Corbellini, for his keen and valuable suggestions preparing the manuscript, Ximena Salaberry from the Division de Laboratorios Veterinarios (DILAVE) of the Uruguayan ?Ministerio de Ganadería, Agricultura y Pesca (MGAP),Santiago Mirazo from UdelaR, and Cecilia Nieves and Camila Hamond from the Institut Pasteur, Montevideo. |
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Contenido : |
Abstract: A case series study was conducted to determine the frequency of causes of abortion in dairy cattle in Uruguay. The sample size of 102 cases was composed of 53 fetuses, 35 fetuses with placentas, and 14 placentas without an associated fetus. All cases underwent gross
and microscopic pathologic examinations as well as microbiological and serological testing. The etiology was determined in 54 (53%) of cases, 51 of which were caused by infectious agents. Within the observed 102 cases, 30 (29%) were caused by Neospora caninum, six (6%) by Coxiella burnetii and two (2%) by Campylobacter fetus subsp. venerealis. Bovine Parainfluenza-3 virus and Salmonella enterica serovar Newport caused one abortion each. Opportunistic bacteria (Escherichia coli, Streptococcus sp., Staphylococcus sp., Mannheimia sp., Trueperella pyogenes, and Providencia stuartii) were associated with 11 abortions. In two cases the fetal death was attributed to dystocia, and in one case the fetus had a congenital mesothelioma. Bovine viral diarrhea virus (BVDV) infection was identified in three fetuses; two of which were co-infected with and had typical lesions of N. caninum. No lesions were observed in the other fetus infected by BVDV. Leptospira interrogans was identified in one fetus
without lesions. Despite the relatively low overall success rate in establishing an etiological diagnosis in cases of abortion in cattle, a systemic workup of bovine abortion is necessary to establish prevention and control strategies. This also facilitates monitoring and surveillance of reproductive diseases in dairy cattle, some of which represent a risk to public health.
Resumo: Uma série de casos foi estudada para determinar a frequência de causas do aborto em bovinos leiteiros no Uruguai. A amostra, de 102 casos, foi composta por 53 fetos, 35 fetos com placentas e 14 placentas sem feto associado. Todos os casos foram submetidos a exames patológicos macroscópicos e microscópicos, além de testes microbiológicos e sorológicos.A etiologia foi determinada em 54 (53%) dos casos, 51 dos quais foram causados por agentes infecciosos. Nos 102 casos observados, 30 (29%) foram causados por Neospora caninum, seis (6%) por Coxiella burnetii e dois (2%) por Campylobacter fetus subsp. venerealis. O vírus da Parainfluenza-3 e Salmonella enterica serovar Newport causaram um aborto cada. Bactérias oportunistas (Escherichia coli, Streptococcus sp., Staphylococcus sp., Mannheimia sp., Trueperella pyogenes
e Providencia stuartii) foram associadas a 11 abortos. Em dois casos, a morte fetal foi atribuída a distocia e, em um caso, o feto apresentava mesotelioma congênito. A infecção pelo vírus da diarreia viral bovina (BVDV) foi identificada em três fetos; dois dos quais foram co-infectados e apresentavam lesões típicas de N. caninum. Não foram observadas lesões no outro feto infectado pelo BVDV. Leptospira interrogans foi
identificada em um feto sem lesões. Apesar da relativamente baixa taxa de sucesso no diagnóstico etiológico nos casos de aborto em bovinos, é necessário o diagnóstico sistemático dos abortos para estabelecer estratégias de prevenção e controle. Isso também facilita o monitoramento e a vigilância de doenças reprodutivas em bovinos leiteiros, algumas das quais representam um risco para a saúde pública. MenosAbstract: A case series study was conducted to determine the frequency of causes of abortion in dairy cattle in Uruguay. The sample size of 102 cases was composed of 53 fetuses, 35 fetuses with placentas, and 14 placentas without an associated fetus. All cases underwent gross
and microscopic pathologic examinations as well as microbiological and serological testing. The etiology was determined in 54 (53%) of cases, 51 of which were caused by infectious agents. Within the observed 102 cases, 30 (29%) were caused by Neospora caninum, six (6%) by Coxiella burnetii and two (2%) by Campylobacter fetus subsp. venerealis. Bovine Parainfluenza-3 virus and Salmonella enterica serovar Newport caused one abortion each. Opportunistic bacteria (Escherichia coli, Streptococcus sp., Staphylococcus sp., Mannheimia sp., Trueperella pyogenes, and Providencia stuartii) were associated with 11 abortions. In two cases the fetal death was attributed to dystocia, and in one case the fetus had a congenital mesothelioma. Bovine viral diarrhea virus (BVDV) infection was identified in three fetuses; two of which were co-infected with and had typical lesions of N. caninum. No lesions were observed in the other fetus infected by BVDV. Leptospira interrogans was identified in one fetus
without lesions. Despite the relatively low overall success rate in establishing an etiological diagnosis in cases of abortion in cattle, a systemic workup of bovine abortion is necessary to establish prevention and contro... Presentar Todo |
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Palabras claves : |
ABORTO BOVINO; BOVINE ABORTION; BOVINOS DE LEITE; CAMPYLOBACTER FETUS; CATTLE; COXIELLA BURNETII; DAIRY CATTLE; NEOSPORA CANINUM; PLATAFORMA DE SALUD ANIMAL; URUGUAI. |
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Thesagro : |
BOVINOS DE LECHE; URUGUAY. |
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Asunto categoría : |
L01 Ganadería |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/16698/1/Pesq.-Vet.-Bras.-405p.325-332-May-2020.pdf
https://www.scielo.br/pdf/pvb/v40n5/1678-5150-pvb-40-05-325.pdf
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Marc : |
LEADER 05497naa a2200445 a 4500
001 1061283
005 2022-09-05
008 2020 bl uuuu u00u1 u #d
024 7 $a10.1590/1678-5150-pvb-6550$2DOI
100 1 $aMACÍAS-RIOSECO, M.
245 $aCauses of abortion in dairy cows in Uruguay. [Causas de aborto em bovinos de leite no Uruguai].$h[electronic resource]
260 $c2020
500 $aArticle history: Received on December 3, 2019./Accepted for publication on December 26, 2019. This research was financially supported by Agencia Nacional de Investigación e Innovación (ANII), grant FSSA_X_2014_1_105696. The authors thank Yisell Perdomo, Cecilia Monesiglio, Anderson Saravia,Bruno Lopez, and all graduate students from the animal health platform at INIA, Jennifer McKenna from UW, Francisco Uzal, Karen Sverlow and Juliann Beingesser from CAHFS-UC Davis for valuable assistance. We are grateful to Luis Corbellini, for his keen and valuable suggestions preparing the manuscript, Ximena Salaberry from the Division de Laboratorios Veterinarios (DILAVE) of the Uruguayan ?Ministerio de Ganadería, Agricultura y Pesca (MGAP),Santiago Mirazo from UdelaR, and Cecilia Nieves and Camila Hamond from the Institut Pasteur, Montevideo.
520 $aAbstract: A case series study was conducted to determine the frequency of causes of abortion in dairy cattle in Uruguay. The sample size of 102 cases was composed of 53 fetuses, 35 fetuses with placentas, and 14 placentas without an associated fetus. All cases underwent gross and microscopic pathologic examinations as well as microbiological and serological testing. The etiology was determined in 54 (53%) of cases, 51 of which were caused by infectious agents. Within the observed 102 cases, 30 (29%) were caused by Neospora caninum, six (6%) by Coxiella burnetii and two (2%) by Campylobacter fetus subsp. venerealis. Bovine Parainfluenza-3 virus and Salmonella enterica serovar Newport caused one abortion each. Opportunistic bacteria (Escherichia coli, Streptococcus sp., Staphylococcus sp., Mannheimia sp., Trueperella pyogenes, and Providencia stuartii) were associated with 11 abortions. In two cases the fetal death was attributed to dystocia, and in one case the fetus had a congenital mesothelioma. Bovine viral diarrhea virus (BVDV) infection was identified in three fetuses; two of which were co-infected with and had typical lesions of N. caninum. No lesions were observed in the other fetus infected by BVDV. Leptospira interrogans was identified in one fetus without lesions. Despite the relatively low overall success rate in establishing an etiological diagnosis in cases of abortion in cattle, a systemic workup of bovine abortion is necessary to establish prevention and control strategies. This also facilitates monitoring and surveillance of reproductive diseases in dairy cattle, some of which represent a risk to public health. Resumo: Uma série de casos foi estudada para determinar a frequência de causas do aborto em bovinos leiteiros no Uruguai. A amostra, de 102 casos, foi composta por 53 fetos, 35 fetos com placentas e 14 placentas sem feto associado. Todos os casos foram submetidos a exames patológicos macroscópicos e microscópicos, além de testes microbiológicos e sorológicos.A etiologia foi determinada em 54 (53%) dos casos, 51 dos quais foram causados por agentes infecciosos. Nos 102 casos observados, 30 (29%) foram causados por Neospora caninum, seis (6%) por Coxiella burnetii e dois (2%) por Campylobacter fetus subsp. venerealis. O vírus da Parainfluenza-3 e Salmonella enterica serovar Newport causaram um aborto cada. Bactérias oportunistas (Escherichia coli, Streptococcus sp., Staphylococcus sp., Mannheimia sp., Trueperella pyogenes e Providencia stuartii) foram associadas a 11 abortos. Em dois casos, a morte fetal foi atribuída a distocia e, em um caso, o feto apresentava mesotelioma congênito. A infecção pelo vírus da diarreia viral bovina (BVDV) foi identificada em três fetos; dois dos quais foram co-infectados e apresentavam lesões típicas de N. caninum. Não foram observadas lesões no outro feto infectado pelo BVDV. Leptospira interrogans foi identificada em um feto sem lesões. Apesar da relativamente baixa taxa de sucesso no diagnóstico etiológico nos casos de aborto em bovinos, é necessário o diagnóstico sistemático dos abortos para estabelecer estratégias de prevenção e controle. Isso também facilita o monitoramento e a vigilância de doenças reprodutivas em bovinos leiteiros, algumas das quais representam um risco para a saúde pública.
650 $aBOVINOS DE LECHE
650 $aURUGUAY
653 $aABORTO BOVINO
653 $aBOVINE ABORTION
653 $aBOVINOS DE LEITE
653 $aCAMPYLOBACTER FETUS
653 $aCATTLE
653 $aCOXIELLA BURNETII
653 $aDAIRY CATTLE
653 $aNEOSPORA CANINUM
653 $aPLATAFORMA DE SALUD ANIMAL
653 $aURUGUAI
700 1 $aSILVEIRA, C.S.
700 1 $aFRAGA, M.
700 1 $aCASAUX, M.L.
700 1 $aCABRERA, A.
700 1 $aFRANCIA, M.E.
700 1 $aREBOLLO, C.
700 1 $aMAYA, L.
700 1 $aZARANTONELLI, L.
700 1 $aSUANES, A.
700 1 $aCOLINA, R.
700 1 $aBUSCHIAZZO, A.
700 1 $aGIANNITTI, F.
700 1 $aRIET-CORREA, F.
773 $tPesquisa Veterinaria Brasileira, 1 May 2020, Volume 40, Issue 5, Pages 325-332. OPEN ACCESS. DOI: https://doi.org/10.1590/1678-5150-pvb-6550
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INIA La Estanzuela (LE) |
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 | Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
20/03/2024 |
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Actualizado : |
20/03/2024 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
GIANNITTI, F.; MACHADO, M.; SILVEIRA, C.S.; CIBILS-STEWART, X.; BARAIBAR, N.; QUEIROZ-MACHADO, C.R.R.; POPPENGA, R.H.; MENCHACA, A.; UZAL, F.A.; GARCÍA, J.A.; MATTO, C.; DUTRA, F.; RUPRECHTER, G.; CAFFARENA, D.; SARAVIA, A. |
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Afiliación : |
FEDERICO GIANNITTI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MIZAEL MACHADO DA COSTA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CAROLINE DA SILVA SILVEIRA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; XIMENA CIBILS-STEWART, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; NICOLÁS BARAIBAR PEDERSEN, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CINTIA R. R. QUEIROZ-MACHADO, Centro Universitario Regional Noroeste, Universidad de la República, Tacuarembó, Uruguay; ROBERT H. POPPENGA, School of Veterinary Medicine, University of California, Davis, Davis CA, United States; JOSE ALEJO MENCHACA BARBEITO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FRANCISCO A. UZAL, School of Veterinary Medicine, University of California, Davis, San Bernardino, CA, United States; JUAN A. GARCÍA, Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible, Balcarce, Argentina; CAROLINA MATTO, División Laboratorios Veterinarios, Ministerio de Ganadería, Agricultura y Pesca, Paysandú, Uruguay; FERNANDO DUTRA, División Laboratorios Veterinarios, Ministerio de Ganadería, Agricultura y Pesca, Treinta y Tres, Uruguay; GRETEL RUPRECHTER, Facultad de Veterinaria, Universidad de la República, Montevideo, Uruguay; RUBEN DARÍO CAFFARENA LEDESMA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Facultad de Veterinaria, Universidad de la República, Montevideo, Uruguay; ANDERSON SARAVIA DE MELO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Experimental oral administration of pollen beetle (Astylus atromaculatus) to cattle results in an acute lethal gastrointestinal disease. |
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Complemento del título : |
Research article. |
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Fecha de publicación : |
2024 |
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Fuente / Imprenta : |
Veterinary Pathology. 2024. https://doi.org/10.1177/03009858241231557 -- [In Press] |
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ISSN : |
0300-9858 |
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DOI : |
10.1177/03009858241231557 |
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Idioma : |
Inglés |
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Notas : |
Article history: First published online March 4, 2024. -- Correspondence: Federico Giannitti, Plataforma de Investigación en Salud Animal, Instituto Nacional de Investigación Agropecuaria, Estación Experimental La Estanzuela, Ruta 50 km 11, Semillero 70006, Colonia, Uruguay.
Email: fgiannitti@inia.org.uy -- Funding: This work was funded by grant P__27 from the "Instituto Nacional de Investigación Agropecuaria" (INIA), Uruguay. -- |
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Contenido : |
ABSTRACT.- In the summer of 2023, ingestion of Astylus atromaculatus (pollen beetle) was linked to spontaneous fatal disease in grazing cattle and sheep in Argentina and Uruguay. While the disease was experimentally reproduced in sheep and guinea pigs in the 1970's, no experimental reproductions have been attempted in cattle, and controversy exists as to whether this insect is indeed noxious to cattle and at which dose. Here, we demonstrate that A. atromaculatus causes acute fatal disease in Hereford calves at single oral dosages of 2.5, 4.5, 10.0, and 15.0 g of insect/kg body weight. Death or severe disease necessitating euthanasia occurred at 38 to 48 hours postinoculation regardless of the dose, suggesting that the single fatal dosage is likely <2.5 g/kg body weight (this dose representing approximately 850 mL of intact beetles in a 100 kg calf). Clinically, the disease was characterized by acute anorexia, prolonged recumbency, reluctance to move, listlessness/apathy, depression, ruminal hypomotility and tympany, hypothermia, bruxism with frothing at the mouth, and mucoid diarrhea progressing to death. Hematologic and biochemical alterations included hemoconcentration, stress/acute inflammatory leukogram, negative energy balance, and ketosis. The pathological hallmark of this experimental disease is acute necrotizing omaso-reticulo-rumenitis, fibrinohemorrhagic enteritis, and exfoliative colitis with intralesional chitinous insect fragments. While A. atromaculatus might contain a gastrointestinal toxin or pathogen, extensive toxicological testing failed to identify a causative toxin. Other pathomechanisms such as direct physical damage caused by insect fragments on the alimentary tract seem plausible, although further studies are needed to elucidate the pathogenesis of A. atromaculatus-associated disease. © The Author(s) 2024. MenosABSTRACT.- In the summer of 2023, ingestion of Astylus atromaculatus (pollen beetle) was linked to spontaneous fatal disease in grazing cattle and sheep in Argentina and Uruguay. While the disease was experimentally reproduced in sheep and guinea pigs in the 1970's, no experimental reproductions have been attempted in cattle, and controversy exists as to whether this insect is indeed noxious to cattle and at which dose. Here, we demonstrate that A. atromaculatus causes acute fatal disease in Hereford calves at single oral dosages of 2.5, 4.5, 10.0, and 15.0 g of insect/kg body weight. Death or severe disease necessitating euthanasia occurred at 38 to 48 hours postinoculation regardless of the dose, suggesting that the single fatal dosage is likely <2.5 g/kg body weight (this dose representing approximately 850 mL of intact beetles in a 100 kg calf). Clinically, the disease was characterized by acute anorexia, prolonged recumbency, reluctance to move, listlessness/apathy, depression, ruminal hypomotility and tympany, hypothermia, bruxism with frothing at the mouth, and mucoid diarrhea progressing to death. Hematologic and biochemical alterations included hemoconcentration, stress/acute inflammatory leukogram, negative energy balance, and ketosis. The pathological hallmark of this experimental disease is acute necrotizing omaso-reticulo-rumenitis, fibrinohemorrhagic enteritis, and exfoliative colitis with intralesional chitinous insect fragments. While A. atromaculatus might c... Presentar Todo |
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Palabras claves : |
Alimentary tract; Astylus atromaculatus; Bovine; Enteritis; Experimental disease; Insects; PLATAFORMA DE INVESTIGACIÓN EN SALUD ANIMAL - INIA; Rumenitis; South America. |
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Asunto categoría : |
L01 Ganadería |
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Marc : |
LEADER 03582naa a2200433 a 4500
001 1064506
005 2024-03-20
008 2024 bl uuuu u00u1 u #d
022 $a0300-9858
024 7 $a10.1177/03009858241231557$2DOI
100 1 $aGIANNITTI, F.
245 $aExperimental oral administration of pollen beetle (Astylus atromaculatus) to cattle results in an acute lethal gastrointestinal disease.$h[electronic resource]
260 $c2024
500 $aArticle history: First published online March 4, 2024. -- Correspondence: Federico Giannitti, Plataforma de Investigación en Salud Animal, Instituto Nacional de Investigación Agropecuaria, Estación Experimental La Estanzuela, Ruta 50 km 11, Semillero 70006, Colonia, Uruguay. Email: fgiannitti@inia.org.uy -- Funding: This work was funded by grant P__27 from the "Instituto Nacional de Investigación Agropecuaria" (INIA), Uruguay. --
520 $aABSTRACT.- In the summer of 2023, ingestion of Astylus atromaculatus (pollen beetle) was linked to spontaneous fatal disease in grazing cattle and sheep in Argentina and Uruguay. While the disease was experimentally reproduced in sheep and guinea pigs in the 1970's, no experimental reproductions have been attempted in cattle, and controversy exists as to whether this insect is indeed noxious to cattle and at which dose. Here, we demonstrate that A. atromaculatus causes acute fatal disease in Hereford calves at single oral dosages of 2.5, 4.5, 10.0, and 15.0 g of insect/kg body weight. Death or severe disease necessitating euthanasia occurred at 38 to 48 hours postinoculation regardless of the dose, suggesting that the single fatal dosage is likely <2.5 g/kg body weight (this dose representing approximately 850 mL of intact beetles in a 100 kg calf). Clinically, the disease was characterized by acute anorexia, prolonged recumbency, reluctance to move, listlessness/apathy, depression, ruminal hypomotility and tympany, hypothermia, bruxism with frothing at the mouth, and mucoid diarrhea progressing to death. Hematologic and biochemical alterations included hemoconcentration, stress/acute inflammatory leukogram, negative energy balance, and ketosis. The pathological hallmark of this experimental disease is acute necrotizing omaso-reticulo-rumenitis, fibrinohemorrhagic enteritis, and exfoliative colitis with intralesional chitinous insect fragments. While A. atromaculatus might contain a gastrointestinal toxin or pathogen, extensive toxicological testing failed to identify a causative toxin. Other pathomechanisms such as direct physical damage caused by insect fragments on the alimentary tract seem plausible, although further studies are needed to elucidate the pathogenesis of A. atromaculatus-associated disease. © The Author(s) 2024.
653 $aAlimentary tract
653 $aAstylus atromaculatus
653 $aBovine
653 $aEnteritis
653 $aExperimental disease
653 $aInsects
653 $aPLATAFORMA DE INVESTIGACIÓN EN SALUD ANIMAL - INIA
653 $aRumenitis
653 $aSouth America
700 1 $aMACHADO, M.
700 1 $aSILVEIRA, C.S.
700 1 $aCIBILS-STEWART, X.
700 1 $aBARAIBAR, N.
700 1 $aQUEIROZ-MACHADO, C.R.R.
700 1 $aPOPPENGA, R.H.
700 1 $aMENCHACA, A.
700 1 $aUZAL, F.A.
700 1 $aGARCÍA, J.A.
700 1 $aMATTO, C.
700 1 $aDUTRA, F.
700 1 $aRUPRECHTER, G.
700 1 $aCAFFARENA, D.
700 1 $aSARAVIA, A.
773 $tVeterinary Pathology. 2024. https://doi.org/10.1177/03009858241231557 -- [In Press]
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