Seroprevalence and risk factors of antibodies against Leptospira spp. in ovines from Uberlândia municipality, Minas Gerais state, Brazil

Salaberry, Sandra Renata Sampaio; Castro, Vanessa; Nassar, Alessandra Figueiredo de Castro; Castro, Jairo Lopes de; Guimarães, E. C.; Lima-Ribeiro, Anna Monteiro Correia

doi:10.1590/s1517-83822011000400026

Cited by 9 publications

(12 citation statements)

References 6 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%

“…The frequency of seropositive sheep in this study was lower than that previously reported for most studies conducted with this species in other Brazilian states: 34.3% in Rio Grande do Sul (HERRMANN et al, 2004), 33.3% in Rondônia (AGUIAR et al, 2010, 22.0% in Minas Gerais (SALABERRY et al, 2011), 47.4% in Rio de Janeiro (MARTINS et al, 2012), and 22.8% in São Paulo (RIZZO et al, 2014). However, these frequencies were higher than those found in surveys conducted in the Northeast region: 3.5% in Rio Grande do Norte (AZEVEDO et al, 2004) and 7.5% in Paraíba (HIGINO et al, 2010).…”

Section: Resultscontrasting

confidence: 69%

“…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). However, reports of leptospirosis cases caused by the serovar Hardjo in sheep and goats without contact with cattle (COUSINS et al, 1989;GERRITSEN et al, 1994;DORJEE et al, 2008) and numerous reports of Autumnalis as the most frequent serovar among small ruminants raise the possibility that these animals may be reservoirs of these serovars.…”

Section: Resultsmentioning

confidence: 99%

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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%

Section: Resultscontrasting

confidence: 69%

Section: Resultsmentioning

confidence: 99%

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

et al. 2016

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“…infection. SALABERRY et al (2011) reported statistical differences among sheep breeds, and purebred animals were more susceptible to infection than Table 1 -Results of serology, polymerase chain reaction (PCR), and bacterial culture of positive animals, according to their origin. mixed-breed animals.…”

Section: Discussionmentioning

confidence: 99%

“…In small ruminants, breed has also been found to be a risk factor associated with leptospirosis (SALABERRY et al, 2011;SANTOS et al, 2012;SILVA et al, 2012). Therefore, the purpose of this study was to detect Leptospira spp.…”

Section: Microbiologymentioning

confidence: 99%

Leptospirosis in native mixed-breed sheep slaughtered in a semiarid region of Brazil

et al. 2017

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Seroprevalence and risk factors for leptospirosis in cattle, sheep, and goats at consorted rearing from the State of Piauí, northeastern Brazil

Campos

Miranda

Rodrigues

et al. 2017

Trop Anim Health Prod

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Leptospirosis is an endemic disease in Latin America, caused by pathogenic bacteria of the genus Leptospira. It is considered one of the main causes responsible for the negative economic impact on global livestock by causing reproductive problems. The research aimed to determine the prevalence of leptospirosis in cattle, sheep, and goats at consorted rearing in the micro-region of Teresina, Piauí state, northeastern Brazil, as well as to identify prevalent serovars and risk factors associated with seroprevalence. Serum samples were analyzed in 336 sheep, 292 goats, and 253 cattle using microscopic agglutination test (MAT). Overall, 378 samples were positive to MAT, with seroprevalence of 42.9%. The prevalences in cattle, sheep, and goats were 50.5, 40.5, and 34.6%, respectively. All herds presented at least one seropositive animal; the Hardjo/Wolffi serovar association was the most common in cattle and Icterohaemorrhagiae in goats and sheep. Beef production (OR = 4.9), cattle herd over 35 animals (OR = 4.0), feeding on pasture (OR = 6.4), weir and/or stream as water source (OR = 2.1), and no veterinary services (OR = 2.9) were risk factors for cattle infection. For sheep, intensive management system (OR = 5.3), suspended slatted facilities (OR = 2.2), more than 20 sheep in reproductive age (OR = 1.9), and absence of deworming (OR = 3.5) were the risk factors, while for goats, the identified risk factors were sheep herd over 52 animals (OR = 1.9) and no veterinary services (OR = 1.8). We conclude that the infection was spreading in consorted herds in this region. Thus, it would be interesting and important to conduct educative activities to farmers on the economic impacts of this disease and the need of preventive and control strategies mainly focused on sanitary measures and animal handling.

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Seroprevalence and risk factors of antibodies against Leptospira spp. in ovines from Uberlândia municipality, Minas Gerais state, Brazil

Cited by 9 publications

References 6 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 in native mixed-breed sheep slaughtered in a semiarid region of Brazil

Seroprevalence and risk factors for leptospirosis in cattle, sheep, and goats at consorted rearing from the State of Piauí, northeastern Brazil

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