PESQUISA VETERINÁRIA BRASILEIRA

Abstract in English:

This study aimed to determine the frequency and distribution of infectious diseases diagnosed through necropsy examination and histopathological analysis in growing/finishing pigs along 12 years (2005-2016) in Southern Brazil. We evaluated 1906 anatomopathological exams of pigs at growing/finishing phases, of which the infectious diseases corresponded to 75.6% of the cases (1,441/1,906). Porcine circovirus type 2 (PCV2) infections were the most frequent, accounting for 51.3% of the cases (739/1,441) with a higher frequency from 2005 to 2007, characterizing an epidemic distribution, with a gradual decline after 2008. Infectious diseases affecting the respiratory system were the second major cause with 30.1% of the cases. Among these, necrotizing bronchiolitis caused by swine Influenza (15.1%, 218/1,441) and bacterial pneumonia (15%, 216/1,441) were the main conditions. Influenza was mostly diagnosed from 2010 to 2013, accounting for 43.1% (167/387) of the cases. After this period, both respiratory infectious diseases were endemic. Digestive system infectious diseases accounted for 10.5% of the diagnoses (151/1,441), with the following main conditions: Salmonella spp. enterocolitis (43.7%, 66/151), Lawsonia spp. proliferative enteropathy (41.7%, 63/151), and Brachyspira spp. colitis (14.6%, 22/151). The latter had a higher incidence from 2012 to 2014 with all cases detected in this period. Polyserositis and bacterial meningitis represented, respectively, 5.8% (84/1,441) and 2.3% (33/1,441) of the cases diagnosed, with a constant endemic character.

• Infectious diseases growing pigs finishing pigs Brazil swine diseases porcine circovirus swine influenza bacterial pneumonia enterocolitis polyserositis

Abstract in Portuguese:

O objetivo deste estudo consistiu em determinar a frequência e a distribuição das doenças infecciosas diagnosticadas através de exame de necropsia e análise histopatológica em suínos nas fases de crescimento/terminação ao longo de 12 anos (2005-2016) no sul do Brasil. Foram avaliados 1906 laudos anatomopatológicos de suínos nas fases de crescimento/terminação, dos quais as doenças infecciosas corresponderam a 75,6% (1441/1906) do total. As infecções por circovírus suíno tipo 2 (PCV2) foram as mais frequentes, contabilizando 51,3% (739/1441) dos casos, com uma alta frequência de 2005 a 2007 caracterizando uma distribuição epidêmica neste período, e um declínio gradual após o ano de 2008. A segunda principal causa incluiu as doenças infecciosas que afetam o sistema respiratório (30,1% dos casos). Dentre essas, destacaram-se a influenza suína (15,1%; 218/1441) e pneumonias bacterianas (15%; 216/1441). O diagnóstico de influenza apresentou uma frequência elevada de 2010 a 2013, totalizando 43,1% (167/387) dos casos. Após este período, ambas doenças infecciosas respiratórias exibiram caráter endêmico. As doenças infecciosas do sistema digestório totalizaram 10,5% (151/1441) dos diagnósticos, com as seguintes principais condições: enterocolite por Salmonella spp. (43,7%; 66/151), enteropatia proliferativa por Lawsonia spp. (41,7%; 63/151) e colite por Brachyspira spp. (14,6%; 22/151). A colite por Brachyspira spp. apresentou uma alta incidência de 2012 a 2014 com todos os casos detectados no período. As polisserosites e meningites bacterianas representaram 5,8% (84/1441) e 2,3% (33/1441) dos casos diagnosticados, respectivamente, com um caráter endêmico constante

• Doenças infecciosas suínos fase de crescimento fase terminal Brasil doenças dos suínos circovirose suína influenza suína pneumonias bacterianas enterocolites polisserosites

Abstract in English:

Corrêa A.M.R., Pescador C.A., Schmitz M., Zlotowski P., Rozza D.B., Oliveira E.C., Barcellos D.E. & Driemeier D. 2006. [Clinical and pathological aspects of swine circovirosis in Rio Grande do Sul, southern Brazil.] Aspectos clínico-patológicos associados à circovirose suína no Rio Grande do Sul. Pesquisa Veterinária Brasileira 26(1):9-13. Setor de Patologia Veterinária, Faculdade de Veterinária, UFRGS, Av. Bento Gonçalves 9090, Porto Alegre, RS 91540-000, Brazil. E-mail: davetpat@ufrgs.br A total of 97 pigs, which had presented wasting, lymphadenomegaly, respiratory distress and pale or icteric mucosa, was necropsied over a 6-month period. Macroscopic lesions were characterized mostly by enlarged lymph nodes, non collapsed and round edged lungs with cranio-ventral areas of consolidation and interlobular edema. Kidneys had increased size, were pale, and presented numerous scattered white spots projecting from surface to the cortical area. Some kidneys also showed small red spots similar to petechial hemorrhage over the cortex. Main microscopic lesions were lympho-histiocytic infiltration in lymph nodes, lungs, and kidneys. Immunohistochemical probing with polyclonal antisera to type II swine circovirus stained positively in 50 out of the 56 cases tested (89.2%).

• Circovirus PMWS PCV2 immunohistochemistry swine.

Abstract in Portuguese:

Corrêa A.M.R., Pescador C.A., Schmitz M., Zlotowski P., Rozza D.B., Oliveira E.C., Barcellos D.E. & Driemeier D. 2006. [Clinical and pathological aspects of swine circovirosis in Rio Grande do Sul, southern Brazil.] Aspectos clínico-patológicos associados à circovirose suína no Rio Grande do Sul. Pesquisa Veterinária Brasileira 26(1):9-13. Setor de Patologia Veterinária, Faculdade de Veterinária, UFRGS, Av. Bento Gonçalves 9090, Porto Alegre, RS 91540-000, Brazil. E-mail: davetpat@ufrgs.br A total of 97 pigs, which had presented wasting, lymphadenomegaly, respiratory distress and pale or icteric mucosa, was necropsied over a 6-month period. Macroscopic lesions were characterized mostly by enlarged lymph nodes, non collapsed and round edged lungs with cranio-ventral areas of consolidation and interlobular edema. Kidneys had increased size, were pale, and presented numerous scattered white spots projecting from surface to the cortical area. Some kidneys also showed small red spots similar to petechial hemorrhage over the cortex. Main microscopic lesions were lympho-histiocytic infiltration in lymph nodes, lungs, and kidneys. Immunohistochemical probing with polyclonal antisera to type II swine circovirus stained positively in 50 out of the 56 cases tested (89.2%).

Abstract in English:

França T.N., Ribeiro C.T., Cunha B.M. & Peixoto P.V. 2005. [Porcine Circovirosis: a review.] Circovirose Suína. Pesquisa Veterinária Brasileira 25(2):59-72. Universidade Estácio de Sá, Curso de Medicina Veterinária, Disciplina de Anatomia Patológica, Estrada Boca do Mato 850, Vargem Pequena, RJ 22783-320, Brazil. E-mail: ticianaf@uol.com.br The literature of Porcine Circovirosis, including the main data on epidemiology and clinical, macroscopic and microscopic alterations of the infection of swine by Porcine Circovirus type 2 (PCV-2), is reviewed. There are various forms of infection: the [Porcine] Postweaning Multisystemic Wasting Syndrome (PMWS), Porcine Congenital Tremor, Porcine Dermatitis and Nephropathy Syndrome, and other associated or correlated diseases as the Porcine Reproductive and Respiratory Syndrome, Proliferative Necrotizing Pneumonia, and reproductive disorders. As PMWS already has been reported from southern Brazil and from the state of Rio de Janeiro, the objective of this review is to draw attention to the implications of this virosis for swine production in Brazil and its economical importance.

• Porcine Circovirosis Porcine Circovirus type 2 Porcine Postweaning Multisystemic Wasting Syndrome Porcine Congenital Tremor Porcine Dermatitis and Nephropathy Syndrome Proliferative Necrotizing Pneumonia reproductive disorders of swine.

Abstract in Portuguese:

França T.N., Ribeiro C.T., Cunha B.M. & Peixoto P.V. 2005. [Porcine Circovirosis: a review.] Circovirose Suína. Pesquisa Veterinária Brasileira 25(2):59-72. Universidade Estácio de Sá, Curso de Medicina Veterinária, Disciplina de Anatomia Patológica, Estrada Boca do Mato 850, Vargem Pequena, RJ 22783-320, Brazil. E-mail: ticianaf@uol.com.br The literature of Porcine Circovirosis, including the main data on epidemiology and clinical, macroscopic and microscopic alterations of the infection of swine by Porcine Circovirus type 2 (PCV-2), is reviewed. There are various forms of infection: the [Porcine] Postweaning Multisystemic Wasting Syndrome (PMWS), Porcine Congenital Tremor, Porcine Dermatitis and Nephropathy Syndrome, and other associated or correlated diseases as the Porcine Reproductive and Respiratory Syndrome, Proliferative Necrotizing Pneumonia, and reproductive disorders. As PMWS already has been reported from southern Brazil and from the state of Rio de Janeiro, the objective of this review is to draw attention to the implications of this virosis for swine production in Brazil and its economical importance.