Caracterização epidemiológica e fatores de risco associados à leptospirose em ovinos deslanados do semiárido brasileiro

Alves, Clebert José; Alcino, Jeferson F.; Farias, Areano Ethério Moreira de; Higino, Severino Silvano dos Santos; Santos, Fabrine A.; Azevêdo, Sérgio Santos de; Costa, Diego Figueiredo da; Santos, Carolina S.A.B.

doi:10.1590/s0100-736x2012000600009

Cited by 24 publications

(23 citation statements)

References 13 publications

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“…Hardjobovis and Autumnalis were the most frequent serovars of sheep and goats found in this study, a result that corroborates the findings of recent serological surveys conducted on small ruminants in Brazil (HERRMANN et al, 2004;LILENBAUM et al, 2007;ARAÚJO NETO et al, 2010;HIGINO et al, 2010;SALABERRY et al, 2011;CARVALHO et al, 2011;SANTOS et al, 2012;MARTINS et al, 2012;MORAES et al, 2012;ALVES et al, 2012;HIGINO et al, 2012;RIZZO et al, 2014). It was long believed that these animals acquired leptospirosis only by prior contact with other species (LEON-VIZCAINO et al, 1987), although the breeding of these species together with cattle breeding and the presence of rodents are important factors for the dissemination of the Hardjobovis and Autumnalis serovars, respectively (FAINE et al, 1999;SALABERRY et al, 2011;SEIXAS et al, 2011).…”

Section: Resultssupporting

confidence: 92%

Influence of storage on the chemical composition of Stylosanthes hays for equine feeding

et al. 2016

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The aim of this survey was to determine the frequency of anti-Leptospira spp. antibodies in goats and sheep slaughtered in different slaughterhouses in the State of Paraiba, in the semi-arid region of Northeastern Brazil. Blood samples were collected from 500 goats and 500 sheep randomly selected. To verify the presence of anti-Leptospira spp. antibodies the microscopic agglutination test (MAT), using 24 serovars as antigens, was used. From the 1,000 animals analyzed, 82 (8.2%; 95% CI = 7.0%-10.5%) were sero-reactive being 26/500 (5.2%; 95% CI = 3.5%-7.5%) in goats and 56/500 (11.2%; 95% CI = 8.7%-14.2%) in sheep. The most frequent serovars were Hardjobovis (14.6%) and Autumnalis (13.4%). In goats, the most frequent serovar was the Hardjobovis, and in sheep the Ballum, with frequencies of 19.2% and 17.9%, respectively. There was a significant difference in the frequency of positive animals among slaughterhouses, both for goats (p = 0.035) and for sheep (p = 0.004), with the county of Alhandra presenting the highest frequency of seropositive animals for both species. It is concluded that sheep and goats from the semiarid region of the Northeastern Brazil may have become adapted to the serovars Hardjobovis e Autumnalis, as well as wild rodents may be involved in the transmission of the disease. It is possible that the climatic conditions influenced in the transmissibility of the leptospirosis, especially in the Mata Paraibana mesoregion, however it was not considered as being sufficient to justify the low frequency of seropositive animals. In this way, it is possible to suggest the hypothesis that the rusticity of the small ruminants in the studied region contributed to the low sero-reactivity verified. Key words: Adaptability. Goats. Leptospirosis. Sheep. Rusticity. ResumoO objetivo deste estudo foi determinar a frequência de anticorpos anti-Leptospira spp. em caprinos e ovinos abatidos em diferentes matadouros no Estado da Paraíba, região semiárida do Nordeste brasileiro. Foi coletado sangue de 500 caprinos e 500 ovinos aleatoriamente selecionados. Para verificar a presença de anticorpos anti-Leptospira spp. empregou-se o teste soroaglutinação microscópica (SAM), utilizando-se 24 sorovares como antígenos. Dos 1.000 animais analisados 82 (8,2%; IC 95%= 7,0%-10,5%) foram sororreagentes, sendo 26/500 (5,2%; IC 95% =3,5%-7,5%) em caprinos e 56/500 (11,2%; IC 95% 8,7%-14,2%) em ovinos. Os sorovares mais frequentes foram Hardjobovis (14,6%) e Autumnalis (13,4%). Na espécie caprina, o sorovar mais frequente foi o Hardjobovis, e na espécie ovina o Ballum, com frequências de 19,2% e 17,9%, respectivamente. Houve diferença significativa na frequência de positivos entre os matadouros, tanto para caprinos (p = 0,035) quanto para ovinos (p = 0,004), com o município de Alhandra apresentando a maior frequência de soropositivos para ambas as espécies. Concluiu-se que ovinos e caprinos da região semiárida do Nordeste podem estar adaptados aos sorovares Hardjobovis e Autumnalis, bem como roedores silvestres estarem envolv...

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Section: Resultssupporting

confidence: 92%

Influence of storage on the chemical composition of Stylosanthes hays for equine feeding

et al. 2016

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“…Regarding reproductive problems, this study did not present association to leptospiric (p=0.685) and brucellosis (p=0.722) infections, similar to the works by Alves et al (2012) in the Brazilian semiarid region when studying sheep leptospirosis, and Juliano et al (2011) in Bahia when studying sheep brucellosis.…”

Section: Discussionsupporting

confidence: 88%

“…in sheep, with 75% of the properties being considered positive for the disease. These results are higher than the ones found by and Alves et al (2012) in the semiarid region in the state of Paraíba (PB), which presented, respectively, 7.60% and 5.41% animals reagent with 27.70% and 28.20% properties considered positive. However, they are lower than the ones found by Hashimoto et al (2010) in the city of Jaguapitã in the state of Paraná, who detected 38.57% seroreagent animals and 100% positive properties.…”

Section: Discussioncontrasting

confidence: 71%

“…This is similar to the research by Herrmann et al (2004) in Rio Grande do Sul (RS) and Escócio et al (2010) in Sorocaba (SP), who detected 28.40% and 20.45%, also for the Hardjo serovar. However, they differed from the works of Marinho et al (2012), (Hebdomadis -18.10%) in the northwestern region of São Paulo (SP), Alves et al (2012), (Autumnalis -49.30%) in the semiarid region in Paraíba (PB), Carvalho et al (2011) (Autumnalis -29.40%) in the city of Teresina in Piauí (PI), Moraes et al (2012) (Autumnalis -66.67%) in Igarapé-Açu (PA).…”

Section: Discussioncontrasting

confidence: 68%

“…However, the most frequent form is the asymptomatic one. Therefore, from an epidemiological point of view, it is the most important one, since the introduction of animals with asymptomatic infection can ensure the persistence of the etiological agent in the herds stricken (ALVES et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Leptospirosis and brucellosis seroepidemiology in sheep and dogs from non-mechanized rural properties in the northwestern region in the state of Paraná

Oliveira

Zaniolo

Dias

et al. 2016

SCA

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Sheep breeding has been important in agribusiness, transforming the Brazilian productive scenario. However, it is still deficient due to the damages caused by infectious diseases. Leptospirosis is a severe disease with global distribution, caused by bacteria from the Leptospira genre affecting both humans and animals. The general infection is unapparent, or its clinical signs, when present, are similar to other infections. Brucellosis is an infectious disease caused by bacteria from the Brucella genre responsible for reproductive disorders in animals, especially ruminants. The purpose of this paper was to seroepidemiological study of Leptospira spp. and Brucella ovis in sheep and dogs from nonmechanized rural properties from the northwestern region in the state of Paraná, Brazil. In order to detect anti-Leptospira antibodies, microscopic agglutination (MAT) was performed. For anti-Brucella antibodies, the agar gel immunodiffusion assay (AGID) was performed. From the total 542 samples from sheep sera analyzed, 11.25% were considered reagent to Leptospira spp. and 18.26% to Brucella ovis. From the 36 dog samples, 25% were reagent to MAT and AGID. From the 32 properties analyzed, 75% were considered positive for leptospirosis and 56.25% for brucellosis. Antibodies against the most probable serovars were Hardjo (34.42%) and Butembo (44.44%) in sheep and dogs, respectively, and the variable exchange of animals among properties was associated to leptospiric infection (p=0.028) in sheep. Leptospirosis and brucellosis are present in the sheep herd and dogs in the rural properties studied, and such result is a warning of the zoonotic importance and the need to establish sanitary programs directed to these animal species. ResumoA ovinocultura tem se destacado no agronegócio, transformando o cenário produtivo do Brasil, porém ainda possui uma deficiência devido aos danos causados por doenças infecciosas. A leptospirose é uma doença grave de distribuição mundial causada por bactérias do gênero Leptospira que afeta o homem e os animais. A infecção geralmente é inapetente, ou os sinais clínicos, quando presentes, são similares aos de outras infecções. A brucelose é uma enfermidade infecciosa causada por bactérias do gênero Brucella responsáveis por desordens reprodutivas nos animais, especialmente nos ruminantes. O objetivo deste trabalho foi realizar um estudo soroepidemiológico de Leptospira spp. e Brucella ovis ovinos e cães de propriedades rurais não tecnificadas da região noroeste do estado do Paraná, Brasil. Para detecção de anticorpos anti-Leptospira foi realizada a soroaglutinação microscópica (SAM), e para anticorpos anti-Brucella, a prova de imunodifusão em gel de ágar (IDGA). Das 542 amostras de soro ovino analisadas, foram consideradas reagentes 11,25% para Leptospira spp. e 18,26% para Brucella ovis. Das 36 amostras de cães, 25% foram regentes a SAM e IDGA. Das 32 propriedades, 75% foram consideradas positivas para leptospirose e 56,25% para brucelose. Os anticorpos contra os sorovares mais prováveis for...

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Leptospirosis seroprevalence and risk factors for sheep in Maranhão state, Brazil

Carvalho¹,

Mineiro

Castro

et al. 2013

Trop Anim Health Prod

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This study was conducted to determine leptospirosis seroprevalence in sheep and their spatial distribution as well as identify risk factors associated with seropositivity in sheep from 37 herds and 11 municipalities in the Presidente Dutra microregion, Maranhão state, Brazil. We analyzed 379 blood serum samples using a Microscopic Agglutination Test (MAT). The individual seroprevalence was 32%. Of the 37 herds studied, 30 (81%, 95% CI 69-94%) had at least one seropositive animal. In seven municipalities, we observed infection in 100% of the herds. The serovars recorded were Grippotyphosa (67%), Wollfi with Hardjo (9%), Bratislava (9%), Hardjo (5%), Icterohaemorrhagiae (5%), Pomona (2%), Castellonis (2%) and Copenhageni (0.8%). We concluded that the Leptospira spp. in sheep is widespread in the area of sheep farms in Maranhão state, and a risk factor is the animals' water source.

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Caracterização epidemiológica e fatores de risco associados à leptospirose em ovinos deslanados do semiárido brasileiro

Cited by 24 publications

References 13 publications

Influence of storage on the chemical composition of Stylosanthes hays for equine feeding

Influence of storage on the chemical composition of Stylosanthes hays for equine feeding

Leptospirosis and brucellosis seroepidemiology in sheep and dogs from non-mechanized rural properties in the northwestern region in the state of Paraná

Leptospirosis seroprevalence and risk factors for sheep in Maranhão state, Brazil

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