Enteric listeriosis in grazing steers supplemented with spoiled silage

An outbreak of enteric listeriosis in steers that were fed spoiled silage is reported. The outbreak started 2 days after ~200 animals in a single paddock were given a supplement of spoiled silage. Forty animals (20%) were affected, and 13 (6.5%) died over a period of 10 days. Affected animals were r...

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Main Authors: Garcia, Juan Angel, Micheloud, Juan Francisco, Campero, Carlos Manuel, Morrell, Eleonora Lidia, Odriozola, Ernesto Raul, Moreira, Ana Rita
Format: info:eu-repo/semantics/article
Language:Inglés
Published: 2017
Subjects:
Online Access:http://hdl.handle.net/20.500.12123/1287
http://journals.sagepub.com/doi/pdf/10.1177/1040638715616658
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author Garcia, Juan Angel
Micheloud, Juan Francisco
Campero, Carlos Manuel
Morrell, Eleonora Lidia
Odriozola, Ernesto Raul
Moreira, Ana Rita
author_browse Campero, Carlos Manuel
Garcia, Juan Angel
Micheloud, Juan Francisco
Moreira, Ana Rita
Morrell, Eleonora Lidia
Odriozola, Ernesto Raul
author_facet Garcia, Juan Angel
Micheloud, Juan Francisco
Campero, Carlos Manuel
Morrell, Eleonora Lidia
Odriozola, Ernesto Raul
Moreira, Ana Rita
author_sort Garcia, Juan Angel
collection INTA Digital
description An outbreak of enteric listeriosis in steers that were fed spoiled silage is reported. The outbreak started 2 days after ~200 animals in a single paddock were given a supplement of spoiled silage. Forty animals (20%) were affected, and 13 (6.5%) died over a period of 10 days. Affected animals were recumbent, depressed, and had diarrhea with mucus and fibrin. Gross and microscopic findings in 3 animals that were subjected to autopsy included excess peritoneal fluid, congestion and edema of abomasum, suppurative enteritis and colitis, and suppurative mesenteric lymphadenitis. Two strains of Listeria monocytogenes were isolated, one of serotype 1/2c from the gallbladder and one of serotype 1/2b from the spoiled silage. Listeria monocytogenes was detected in the mesenteric lymph nodes and intestinal wall of 1 animal by immunohistochemistry (IHC). Clinical history and signs, gross and microscopic findings, bacterial isolation, and IHC results confirmed a diagnosis of enteric listeriosis. The source of infection was likely the spoiled silage
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institution Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina)
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spelling INTA12872018-01-15T18:38:06Z Enteric listeriosis in grazing steers supplemented with spoiled silage Garcia, Juan Angel Micheloud, Juan Francisco Campero, Carlos Manuel Morrell, Eleonora Lidia Odriozola, Ernesto Raul Moreira, Ana Rita Buey Listeriosis Ensilado Bullocks Silage Novillo An outbreak of enteric listeriosis in steers that were fed spoiled silage is reported. The outbreak started 2 days after ~200 animals in a single paddock were given a supplement of spoiled silage. Forty animals (20%) were affected, and 13 (6.5%) died over a period of 10 days. Affected animals were recumbent, depressed, and had diarrhea with mucus and fibrin. Gross and microscopic findings in 3 animals that were subjected to autopsy included excess peritoneal fluid, congestion and edema of abomasum, suppurative enteritis and colitis, and suppurative mesenteric lymphadenitis. Two strains of Listeria monocytogenes were isolated, one of serotype 1/2c from the gallbladder and one of serotype 1/2b from the spoiled silage. Listeria monocytogenes was detected in the mesenteric lymph nodes and intestinal wall of 1 animal by immunohistochemistry (IHC). Clinical history and signs, gross and microscopic findings, bacterial isolation, and IHC results confirmed a diagnosis of enteric listeriosis. The source of infection was likely the spoiled silage EEA Balcarce Fil: Garcia, Juan Angel. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Investigación Animal del Chaco Semiárido; Argentina. Fil: Micheloud, Juan Francisco. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; Argentina Fil: Campero, Carlos Manuel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Grupo de Salud Animal; Argentina Fil: Morrell, Eleonora Lidia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Grupo de Salud Animal; Argentina Fil: Odriozola, Ernesto Raul. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Grupo de Salud Animal; Argentina Fil: Moreira, Ana Rita. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Grupo de Salud Animal; Argentina 2017-09-21T18:40:05Z 2017-09-21T18:40:05Z 2016 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion info:ar-repo/semantics/artículo http://hdl.handle.net/20.500.12123/1287 http://journals.sagepub.com/doi/pdf/10.1177/1040638715616658 1040-6387 (Print) 1943-4936 (Online) DOI: 10.1177/1040638715616658 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Journal of veterinary diagnostic investigation 28 (1) : 65–69. (2016)
spellingShingle Buey
Listeriosis
Ensilado
Bullocks
Silage
Novillo
Garcia, Juan Angel
Micheloud, Juan Francisco
Campero, Carlos Manuel
Morrell, Eleonora Lidia
Odriozola, Ernesto Raul
Moreira, Ana Rita
Enteric listeriosis in grazing steers supplemented with spoiled silage
title Enteric listeriosis in grazing steers supplemented with spoiled silage
title_full Enteric listeriosis in grazing steers supplemented with spoiled silage
title_fullStr Enteric listeriosis in grazing steers supplemented with spoiled silage
title_full_unstemmed Enteric listeriosis in grazing steers supplemented with spoiled silage
title_short Enteric listeriosis in grazing steers supplemented with spoiled silage
title_sort enteric listeriosis in grazing steers supplemented with spoiled silage
topic Buey
Listeriosis
Ensilado
Bullocks
Silage
Novillo
url http://hdl.handle.net/20.500.12123/1287
http://journals.sagepub.com/doi/pdf/10.1177/1040638715616658
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