Non-ambulatory pigs in two Brazilian growing-finishing farms : a clinic, etiological and pathological perspective on 76 cases

Detalhes bibliográficos
Autor(a) principal: Piva, Manoela Marchezan
Data de Publicação: 2022
Outros Autores: Schwertz, Claiton Ismael, Henker, Luan Cleber, Bianchi, Ronaldo Michel, Kemper, Regina Tose, Almeida, Bruno Albuquerque de, Nagae, R., Michaelsen, Taís Regina, Pavarini, Saulo Petinatti
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/250152
Resumo: Background: Non-ambulatory pigs, colloquially known as downers or downed pigs, are animals presented with limited to no mobility, usually as a result of pre-existing neurologic or musculoskeletal conditions. Impaired ambulation is a major cause of euthanasia in pigs, leading to economic losses and animal welfare concerns. Additionally, reaching the underlying diagnosis of impaired ambulation in pigs is commonly a challenging task for swine practitioners. The aim of this necropsy-based study was to report the clinical, etiological, and pathological findings of 76 non-ambulatory grower-finisher pigs, and to correlate tail-biting lesions with the causes of death/reason for euthanasia in non-ambulatory pigs. Necropsies of downed pigs were performed during on-site visits to two pig farms in southern Brazil. Results: The diagnosis of the conditions was based on the clinical, macroscopic, histopathological, bacteriological, immunohistochemical, and molecular findings. The diseases diagnosed in non-ambulatory pigs in this study were suppurative arthritis (29/76), suppurative spondylitis (10/76), PVC-2 associated diseases (8/76), bone fracture (7/76), non-suppurative meningoencephalomyelitis (4/76), suppurative meningoencephalitis (6/76), fibrocartilaginous thromboembolism (3/76), epiphysiolysis (3/76), ascending bacterial myelitis (3/76), and other conditions (3/76). The frequency of suppurative arthritis, suppurative spondylitis, and ascending bacterial myelitis/meningitis was higher in pigs with tail biting lesions than controls (P < 0.001). Conclusions: Non-ambulatory pigs were observed during the entire rearing period, however, the occurrence of non-ambulatory pigs increased in animals aged ≥ 150 days. Infectious diseases were the most common cause of downed pigs, mainly associated with chronic bacterial infections. Tail biting lesions were an important predisposing factor to suppurative arthritis, suppurative spondylitis, and ascending bacterial myelitis/meningitis.
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spelling Piva, Manoela MarchezanSchwertz, Claiton IsmaelHenker, Luan CleberBianchi, Ronaldo MichelKemper, Regina ToseAlmeida, Bruno Albuquerque deNagae, R.Michaelsen, Taís ReginaPavarini, Saulo Petinatti2022-10-22T05:01:03Z20222055-5660http://hdl.handle.net/10183/250152001148842Background: Non-ambulatory pigs, colloquially known as downers or downed pigs, are animals presented with limited to no mobility, usually as a result of pre-existing neurologic or musculoskeletal conditions. Impaired ambulation is a major cause of euthanasia in pigs, leading to economic losses and animal welfare concerns. Additionally, reaching the underlying diagnosis of impaired ambulation in pigs is commonly a challenging task for swine practitioners. The aim of this necropsy-based study was to report the clinical, etiological, and pathological findings of 76 non-ambulatory grower-finisher pigs, and to correlate tail-biting lesions with the causes of death/reason for euthanasia in non-ambulatory pigs. Necropsies of downed pigs were performed during on-site visits to two pig farms in southern Brazil. Results: The diagnosis of the conditions was based on the clinical, macroscopic, histopathological, bacteriological, immunohistochemical, and molecular findings. The diseases diagnosed in non-ambulatory pigs in this study were suppurative arthritis (29/76), suppurative spondylitis (10/76), PVC-2 associated diseases (8/76), bone fracture (7/76), non-suppurative meningoencephalomyelitis (4/76), suppurative meningoencephalitis (6/76), fibrocartilaginous thromboembolism (3/76), epiphysiolysis (3/76), ascending bacterial myelitis (3/76), and other conditions (3/76). The frequency of suppurative arthritis, suppurative spondylitis, and ascending bacterial myelitis/meningitis was higher in pigs with tail biting lesions than controls (P < 0.001). Conclusions: Non-ambulatory pigs were observed during the entire rearing period, however, the occurrence of non-ambulatory pigs increased in animals aged ≥ 150 days. Infectious diseases were the most common cause of downed pigs, mainly associated with chronic bacterial infections. Tail biting lesions were an important predisposing factor to suppurative arthritis, suppurative spondylitis, and ascending bacterial myelitis/meningitis.application/pdfengPorcine health management. London. Vol. 8 (2022), 36, 12 p.Lesões de caudaCausas de morteSuínosDeambulação prejudicadaEutanásiaSwine pathologyNeurological diseasesLocomotor disordersTail biting lesionNon-ambulatory pigs in two Brazilian growing-finishing farms : a clinic, etiological and pathological perspective on 76 casesEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001148842.pdf.txt001148842.pdf.txtExtracted Texttext/plain54084http://www.lume.ufrgs.br/bitstream/10183/250152/2/001148842.pdf.txt951b7a371a06749cd92728bfc203b568MD52ORIGINAL001148842.pdfTexto completo (inglês)application/pdf4061894http://www.lume.ufrgs.br/bitstream/10183/250152/1/001148842.pdf300a5d6065e83a2425e3652d4ef6caf2MD5110183/2501522023-12-30 04:23:54.162751oai:www.lume.ufrgs.br:10183/250152Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-12-30T06:23:54Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Non-ambulatory pigs in two Brazilian growing-finishing farms : a clinic, etiological and pathological perspective on 76 cases
title Non-ambulatory pigs in two Brazilian growing-finishing farms : a clinic, etiological and pathological perspective on 76 cases
spellingShingle Non-ambulatory pigs in two Brazilian growing-finishing farms : a clinic, etiological and pathological perspective on 76 cases
Piva, Manoela Marchezan
Lesões de cauda
Causas de morte
Suínos
Deambulação prejudicada
Eutanásia
Swine pathology
Neurological diseases
Locomotor disorders
Tail biting lesion
title_short Non-ambulatory pigs in two Brazilian growing-finishing farms : a clinic, etiological and pathological perspective on 76 cases
title_full Non-ambulatory pigs in two Brazilian growing-finishing farms : a clinic, etiological and pathological perspective on 76 cases
title_fullStr Non-ambulatory pigs in two Brazilian growing-finishing farms : a clinic, etiological and pathological perspective on 76 cases
title_full_unstemmed Non-ambulatory pigs in two Brazilian growing-finishing farms : a clinic, etiological and pathological perspective on 76 cases
title_sort Non-ambulatory pigs in two Brazilian growing-finishing farms : a clinic, etiological and pathological perspective on 76 cases
author Piva, Manoela Marchezan
author_facet Piva, Manoela Marchezan
Schwertz, Claiton Ismael
Henker, Luan Cleber
Bianchi, Ronaldo Michel
Kemper, Regina Tose
Almeida, Bruno Albuquerque de
Nagae, R.
Michaelsen, Taís Regina
Pavarini, Saulo Petinatti
author_role author
author2 Schwertz, Claiton Ismael
Henker, Luan Cleber
Bianchi, Ronaldo Michel
Kemper, Regina Tose
Almeida, Bruno Albuquerque de
Nagae, R.
Michaelsen, Taís Regina
Pavarini, Saulo Petinatti
author2_role author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Piva, Manoela Marchezan
Schwertz, Claiton Ismael
Henker, Luan Cleber
Bianchi, Ronaldo Michel
Kemper, Regina Tose
Almeida, Bruno Albuquerque de
Nagae, R.
Michaelsen, Taís Regina
Pavarini, Saulo Petinatti
dc.subject.por.fl_str_mv Lesões de cauda
Causas de morte
Suínos
Deambulação prejudicada
Eutanásia
topic Lesões de cauda
Causas de morte
Suínos
Deambulação prejudicada
Eutanásia
Swine pathology
Neurological diseases
Locomotor disorders
Tail biting lesion
dc.subject.eng.fl_str_mv Swine pathology
Neurological diseases
Locomotor disorders
Tail biting lesion
description Background: Non-ambulatory pigs, colloquially known as downers or downed pigs, are animals presented with limited to no mobility, usually as a result of pre-existing neurologic or musculoskeletal conditions. Impaired ambulation is a major cause of euthanasia in pigs, leading to economic losses and animal welfare concerns. Additionally, reaching the underlying diagnosis of impaired ambulation in pigs is commonly a challenging task for swine practitioners. The aim of this necropsy-based study was to report the clinical, etiological, and pathological findings of 76 non-ambulatory grower-finisher pigs, and to correlate tail-biting lesions with the causes of death/reason for euthanasia in non-ambulatory pigs. Necropsies of downed pigs were performed during on-site visits to two pig farms in southern Brazil. Results: The diagnosis of the conditions was based on the clinical, macroscopic, histopathological, bacteriological, immunohistochemical, and molecular findings. The diseases diagnosed in non-ambulatory pigs in this study were suppurative arthritis (29/76), suppurative spondylitis (10/76), PVC-2 associated diseases (8/76), bone fracture (7/76), non-suppurative meningoencephalomyelitis (4/76), suppurative meningoencephalitis (6/76), fibrocartilaginous thromboembolism (3/76), epiphysiolysis (3/76), ascending bacterial myelitis (3/76), and other conditions (3/76). The frequency of suppurative arthritis, suppurative spondylitis, and ascending bacterial myelitis/meningitis was higher in pigs with tail biting lesions than controls (P < 0.001). Conclusions: Non-ambulatory pigs were observed during the entire rearing period, however, the occurrence of non-ambulatory pigs increased in animals aged ≥ 150 days. Infectious diseases were the most common cause of downed pigs, mainly associated with chronic bacterial infections. Tail biting lesions were an important predisposing factor to suppurative arthritis, suppurative spondylitis, and ascending bacterial myelitis/meningitis.
publishDate 2022
dc.date.accessioned.fl_str_mv 2022-10-22T05:01:03Z
dc.date.issued.fl_str_mv 2022
dc.type.driver.fl_str_mv Estrangeiro
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/250152
dc.identifier.issn.pt_BR.fl_str_mv 2055-5660
dc.identifier.nrb.pt_BR.fl_str_mv 001148842
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dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Porcine health management. London. Vol. 8 (2022), 36, 12 p.
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