Anti-Neospora caninum antibody detection and vertical transmission rate in pregnant zebu beef cows (Bos indicus): Neospora caninum in pregnant beef cows (Bos indicus)

Nascimento, Eudes Esteves do; Sammi, Ana Sue; Santos, Joeleni Rosa dos; Nino, Beatriz de Souza Lima; Bogado, Alexey Leon Gomel; Taroda, Alessandra; Vidotto, Odilon; Garcia, João Luís

doi:10.1016/j.cimid.2014.08.002

Cited by 3 publications

(3 citation statements)

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“…The parasite is transmitted across the herd both vertically and horizontally (GONDIM et al, 2004). Vertical transmission is the most important in terms of disease maintenance (NASCIMENTO et al, 2014), since it is intergenerational (DUBEY et al, 2007).…”

Section: Parasitologymentioning

confidence: 99%

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Seroprevalence estimate and associated risk factors for neosporosis in dairy cattle in the northwest region of Rio Grande do Sul State, Brazil

et al. 2018

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The aim of this study was to estimate neosporosis seroprevalence and its associated risk factors in milk herds (Bos taurus taurus) located in the northwestern region of Rio Grande do Sul State, Brazil. Three hundred twenty-two blood samples were collected from dairy cows on 18 farms in 17 cities of this region. An epidemiologic questionnaire was completed for each farm. It consisted of questions about the general characteristics of the herd, reproduction, and animal management. Serum samples were tested for Neospora caninum using a commercial enzyme-linked immunosorbent assay (ELISA) kit. Results indicated a seroprevalence of Neospora in 88.9% (16/18) of herds and 31.1% (100/322) of individuals. Risk factor analyses demonstrated that culling by reproductive disorder (OR = 0.6), flooding (OR = 0.5), and commercial sale (OR = 0.4) were associated with seroprevalence. Nevertheless, the purchase of replacement animals in the herd played an important role in disease occurrence (OR = 2.2). Results of this study suggested that Neospora caninum was present in the studied herds under investigation and that there are risk factors associated with its seroprevalence on the farms of the northwestern of Rio Grande do Sul.

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Section: Parasitologymentioning

confidence: 99%

“…In southern states such as Paraná and Santa Catarina, the prevalence of Neospora caninum was 30.3-30.6% (NASCIMENTO et al, 2014;FÁVERO et al, 2017). In Rio Grande do Sul, this disease poses both sanitary and economic threats (VOGEL et al, 2006).…”

Section: Parasitologymentioning

confidence: 99%

Seroprevalence estimate and associated risk factors for neosporosis in dairy cattle in the northwest region of Rio Grande do Sul State, Brazil

et al. 2018

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“…Neospora caninum is prevalent in all continents (DUBEY & SCHARES, 2011), including Brazil, where different studies have been conducted to detect antibodies in beef cattle, with the prevalence ranging from 9.1 % to 97.2 % (HASEGAWA et al, 2004;VIANNA et al, 2008;ANDREOTTI et al, 2010;AMARAL et al, 2012;SILVA et al, 2017). In the state of Paraná, different regions have been studied; the north central and southwest have a prevalence of antibodies against the parasite in beef cattle of up to 30.3 % and 13.2 %, respectively (MARQUES et al, 2011;MOURA et al, 2012;NASCIMENTO et al, 2014); however, different diagnostic techniques and cut-offs were used in these studies, which could explain the difference in prevalence rates. Moreover, seroprevalence of neosporosis may vary according to the type of cattle (beef versus dairy), mainly due to the differences between the production systems (DUBEY & SCHARES, 2011).…”

Section: Introductionmentioning

confidence: 99%

Anti-Neospora caninum antibodies in beef cattle from the northern region of Paraná state, Brazil

et al. 2019

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The presence of anti-Neospora caninum antibodies in beef cattle slaughtered in the northern region of the state of Paraná, Brazil, was evaluated. A total of 401 blood samples were collected; 281 samples from the municipality of Rolândia and 120 from the municipality of Borrazópolis, between April 2015 and November 2016. Of the total samples, 289 were from females and 112 from males, aged one and a half to eight years. Indirect fluorescent antibody test (IFAT) was performed, using a cut-off of 1:100. Variables were tabulated for statistical analyses (Fisher’s exact test and chi-square tests, p≤0.05). The analysis showed that of the 401 samples, 37 were positive for N. caninum, indicating a prevalence of 9.2 %, and observed titers were 1:100 (16), 1:200 (14), and 1:400 (7). The variables sex, age, and location did not differ statistically (p>0.05). Our results showed a sero-occurrence of N. caninum in cattle slaughtered in the northern region of the state of Paraná.

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All about neosporosis in Brazil

Cerqueira‐Cézar

Calero‐Bernal

Dubey

et al. 2017

Rev. Bras. Parasitol. Vet.

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Neospora caninum is protozoan parasite with domestic and wild dogs, coyotes and grey wolves as the definitive hosts and many warm-blooded animals as intermediate hosts. It was cultivated and named in 1988. Neosporosis is a major disease of cattle and has no public health significance. Since 1990's N. caninum has emerged as a major cause of abortion in cattle worldwide, including in Brazil. N. caninum also causes clinical infections in several other animal species. Considerable progress has been made in understanding the biology of N. caninum and there are more than 200 papers on this subject from Brazil. However, most of the reports on neosporosis from Brazil are serological surveys. Overall, little is known of clinical neosporosis in Brazil, particularly cattle. The few reports pertain to sporadic cases of abortion with no information on epidemics or storms of abortion. The objective of the present review is to summarize all reports from Brazil and suggest topic for further research, including prevalence of N. caninum oocysts in soil or in canine feces, and determining if there are additional definitive hosts, other than the domestic dog. There is need for a national survey in cattle using defined parameters. Future researches should focus on molecular characterization of N. caninum strains, possibility of vaccine production and relationship between wildlife and livestock epidemiology.Keywords: Neospora caninum, neosporosis, domestic animals, wild animals, Brazil. ResumoNeospora caninum é um protozoário parasita que possui os canídeos domésticos e selvagens, coiotes e lobos cinzentos como hospedeiros definitivos e vários animais de sangue quente como hospedeiros intermediários. Foi cultivado e nomeado em 1988. A neosporose é uma das principais doenças em bovinos e não tem significância em saúde pública. Desde 1990, N. caninum tem emergido como uma das principais causas de aborto em bovinos em todo o mundo, inclusive no Brasil. N. caninum também causa infecções clínicas em várias outras espécies animais. Consideráveis avanços foram feitos na compreensão da biologia desse parasita e há mais de 200 trabalhos sobre o assunto no Brasil. No entanto, a maioria dos relatos de neosporose do Brasil são relacionados a sorologia. Em geral, pouco se sabe sobre a neosporose clínica no Brasil, particularmente em bovinos. Os poucos relatos referem-se a casos esporádicos de aborto sem informações sobre epidemias ou surtos de aborto. O objetivo da presente revisão é resumir todos os relatos sobre N. caninum no Brasil e sugerir tópicos para pesquisas futuras, incluindo a prevalência de oocistos de N. caninum no solo ou em fezes caninas e determinar se há hospedeiros definitivos adicionais, exceto o cão doméstico no país. Uma pesquisa nacional em bovinos usando parâmetros definidos seria de grande importância. Pesquisas futuras deveriam ser focadas na caracterização de cepas de N. caninum, possibilidade de produção de vacinas e a relação epidemiológica entre a vida selvagem e o gado.Palavras-chave: Neospora caninum, neospo...

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Anti-Neospora caninum antibody detection and vertical transmission rate in pregnant zebu beef cows (Bos indicus): Neospora caninum in pregnant beef cows (Bos indicus)

Cited by 3 publications

References 31 publications

Seroprevalence estimate and associated risk factors for neosporosis in dairy cattle in the northwest region of Rio Grande do Sul State, Brazil

Seroprevalence estimate and associated risk factors for neosporosis in dairy cattle in the northwest region of Rio Grande do Sul State, Brazil

Anti-Neospora caninum antibodies in beef cattle from the northern region of Paraná state, Brazil

All about neosporosis in Brazil

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