Confirmation that the dog is a definitive host for Neospora caninum

Lindsay, David S.; Dubey, J. P.; Duncan, Robert B.

doi:10.1016/s0304-4017(99)00054-0

Cited by 264 publications

(179 citation statements)

References 11 publications

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“…Since its identification in 1988, many aspects of the biology, diagnosis and control of Neospora caninum, have been investigated (Dubey 1999;2003) due to its importance as a causative agent of abortion in cattle. Despite many reports of abortion outbreaks in beef cattle (Waldner et al 1999, McAllister et al 2000, this phenomenon has occurred worldwide mostly in dairy cattle (Dubey 1999, Wouda et al 1997, Reichel 2000.…”

Section: Introductionmentioning

confidence: 99%

“…Despite many reports of abortion outbreaks in beef cattle (Waldner et al 1999, McAllister et al 2000, this phenomenon has occurred worldwide mostly in dairy cattle (Dubey 1999, Wouda et al 1997, Reichel 2000.…”

Section: Introductionmentioning

confidence: 99%

“…In the N. caninum life cycle, dogs and coyotes are definitive hosts (McAllister et al 1998, Lindsay et al 1999, Gondim et al 2004. The vertical transmission is the main form of dissemination and responsible for the maintenance of infection by N. caninum among flocks (Paré et al1996, Thurmond Hietala 1997.…”

Section: Introductionmentioning

confidence: 99%

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Neospora caninum seropositivity in cattle breeds in the South Fluminense Paraíba Valley, state of Rio de Janeiro

et al. 2009

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RESUMO.-[Soropositividade para Neospora caninum e raças bovinas no vale do Paraíba sulfluminense, Estado do Rio de Janeiro.] A realização deste estudo teve como objetivo verificar a ocorrência diferenças na distribuição da infecção por Neospora caninum em bovinos leiteiros da raça Holandesa Preta e Branca e mestiços na Mesorregião Fluminense a maior bacia leiteira do Rio de Janeiro. De um total de 2.491 vacas foram coletadas amostras de sangue de 563 de forma não randomizada, pertencentes a 57 propriedades localizadas nos municípios de Resende e Rio Claro. O tamanho da amostra por propriedade foi proporcional ao número de animais alvo da mesma. O abortamento ou distúrbios reprodutivos não foram utilizados como critérios de seleção. Foi verificada associação altamente significativa entre a soropositividade e o padrão racial (p=0,006). Ao conduzir as análises entre apenas dois padrões verificou-se os seguintes resultados: HPB versus zebuínos (p=0,0028) com 2,65 mais chances de sorpositividade em bovinos HPB; HPB versus (zebuínos + Gir x Holandês) p=0,01, com 2,23 mais chances de sopositividade também na raça HPB. Não houve diferença significativa entre HPB versus Gir x Holandês (p=0,08) e entre os zebuínos e Gir x Holandês (p=0,11). Este estudo suporta a hipótese que existe uma estreita relação entre a presença da infecção e a The infection by Neospora caninum of different cattle breeds in dairy properties in two municipalities of the South Fluminense Paraíba Valley, state of Rio de Janeiro, was evaluated. Considering a sampling universe of 2,491 cows, blood samples were collected from 563 dairy cows in 57 farms, which were randomically selected in proportion to the number of animals, using a random stratified sampling system. For each property the number of selected cows was proportional to the herd size. Abortion or other reproductive disorders were not considered as criteria for selecting the animals, and seropositivity was determined by indirect enzyme-linked immunosorbent assay (ELISA). A high association (p=0.006) between seropositivity and racial patterns was found. The analysis revealed that in comparison of pure black-and-white Holstein cows versus Zebu (p=0.0028), Holstein cows showed 2.65 times greater odds for seropositivity. In the same way, by comparing black-and-white Holstein versus Zebu + crossbreed Zebu/Holstein (p=0.01), it was noted that there is 2.23 times more chance for seropositivity in Holstein cattle. There were no significant differences concerning the comparison of Holstein cattle versus crossbreed Zebu/Holstein (p=0.08) or Zebu versus crossbreed Zebu/Holstein (p=0.11). This study supports the hypothesis that there is a close association between cattle breeds and the frequency of infection by N. caninum.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Neospora caninum seropositivity in cattle breeds in the South Fluminense Paraíba Valley, state of Rio de Janeiro

et al. 2009

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“…In dogs it can be responsible for a severe disease characterised by various clinical signs, including limb ataxia, ascending paralysis and generalised neurological signs [2]. It can also induce myocardial, pulmonary and dermal lesions [3].…”

Section: Introductionmentioning

confidence: 99%

First epidemiological study on exposure to Neospora caninum in different canine populations in the Algiers District (Algeria)

Ghalmi

China

Kaidi

et al. 2009

Parasitology International

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Neospora caninum is an important cause of abortion in cattle worldwide. Dogs act as final hosts shedding oocysts in the environment. They can also harbour the extraintestinal stage of the parasite and this may be associated with a fairly rare neuromuscular condition. The sera of 781 dogs from the Algiers District were screened by IFAT for the presence of anti-N. caninum antibodies. These dogs were distributed into four populations: local stray dogs, police dogs, dogs from breeding kennels and farm dogs. The overall seroprevalence was 21.90%. Significant differences were observed between the different populations, the highest prevalence being observed in farm (44.44%) and stray dogs (22.55%). Additionally, the highest titres were observed in farm dogs. Among studied epidemiological parameters, breed, dog origin, season and vaccination status were significantly associated with IFAT results. Additionally, a recently described real time PCR was used on the blood of 100 pound dogs and the results were compared with the serological data. A higher proportion of dogs was found to be positive by PCR when compared to the IFAT results. There was only a fairly low agreement between PCR and IFAT results which suggests that these techniques measured different aspects of the host-parasite relationship. This study indicates that the level of exposure of the canine population of Algiers area to N. caninum is very high. This would indicate a potentially high risk for N. caninum induced abortion in cattle in this region and in Algeria.

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“…A infecção adquirida através da via transplacentária é severa, caracterizando-se por encefalite, poliradiculite, polimiosite e paralisia dos membros posteriores (LINDSAY; DUBEY; DUNCAN, 1999). Atinge preferencialmente animais com até 12 meses de idade, provocando paralisia do tipo ascendente nos membros posteriores, sem predileção por sexo ou raça (RUEHLMANN et al, 1995).…”

Section: Neosporose Em Cãesunclassified

Neosporose em Animais Domésticos

Guimarães

Romanelli

2006

Sem. Ci. Agr.

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ResumoA neosporose, doença emergente causada pelo Neospora caninum, é considerada como a principal causa de abortamentos em bovinos em vários países. Estudos têm sido realizados até hoje com diversas espécies de animais, visando melhor elucidação da neosporose considerando agente, hospedeiro e meio ambiente. Esta revisão enfatiza aspectos sobre patogenia e diagnóstico da neosporose em alguns animais domésticos. Palavras-chave: Neospora caninum. Bovinos. Cães. Ovinos. Eqüídeos. AbstractNeosporosis, emerging disease caused by Neospora caninum was considered the most important causes of aborts in cattle from many countries. Some studies have been developed in several animal species to understand host-parasite relationship. The present review describes some aspects about pathogeny and diagnostic of the neosporosis in domestic animals.

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Confirmation that the dog is a definitive host for Neospora caninum

Cited by 264 publications

References 11 publications

Neospora caninum seropositivity in cattle breeds in the South Fluminense Paraíba Valley, state of Rio de Janeiro

Neospora caninum seropositivity in cattle breeds in the South Fluminense Paraíba Valley, state of Rio de Janeiro

First epidemiological study on exposure to Neospora caninum in different canine populations in the Algiers District (Algeria)

Neosporose em Animais Domésticos

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