Potential risk factors for bovine<i>Neospora caninum</i>infection in Germany are not under the control of the farmers

Schares, Gereon; Bärwald, Andrea; Staubach, Christoph; Ziller, Mario; Klöss, Detlef; Schröder, Ronald; Labohm, R.; Dräger, K.; Fasen, W.; Hess, R. G.; Conraths, Franz J.

doi:10.1017/s0031182004005700

Cited by 61 publications

(41 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, the number of dogs per farm was positively associated with N. caninum seroprevalence in cows (P Wald 5 0.043), as previously observed by Paré et al (1998) and Dijkstra et al (2002) and, more recently, by Schares et al (2004) and Hobson et al (2005), although this contradicts several studies that did not find an association between farm dogs and bovine neosporosis (Rodriguez et al, 2002;Fischer et al, 2003). The lack of association between previous DOI: 10.1645/GE-3023.1 abortions and seroprevalence in cows is not surprising considering that a number of factors can influence the abortion in dams (Schares et al, 2004), not least the genetic and biological diversity of field isolates ) and the dam's immunity . Moreover, only a proportion of infected cows abort (Williams et al, 2000).…”

supporting

confidence: 82%

Serological Survey of Neospora caninum Infection in Cattle Herds From Western Romania

Imre¹,

Morariu²,

Ilie³

et al. 2012

Journal of Parasitology

View full text Add to dashboard Cite

Serum samples from 376 randomly selected adult cattle, from 25 farms located in 3 counties (Arad, Bihor, and Timiş) from western Romania, were sampled for Neospora caninum antibodies using a commercial ELISA-kit. Seroprevalence values and risk factors for neosporosis (cow age, breed, herd size, farming system, previous abortion, and number of farm dogs) were examined using a generalized linear mixed model with a binomial distribution. Overall, the seroprevalence of N. caninum was 27.7% (104/376) with a prevalence of 27.9% (24/86) in Arad, 26.9% (25/93) in Bihor, and 27.9% (55/197) in Timiş. Of 25 cattle herds, 23 were seropositive with a prevalence ranging from 10.0 to 52.2%. No correlation was found between N. caninum seropositivity and age, breed, herd size, breeding system, and previous abortion. The number of farm dogs was the only factor (P Wald 5 0.03) positively associated with seroprevalence in cows and can be considered the risk factor in the acquiring of infection. The present work is the first regarding serological evidence of N. caninum infection in cattle from western Romania.

show abstract

supporting

confidence: 82%

Serological Survey of Neospora caninum Infection in Cattle Herds From Western Romania

Imre¹,

Morariu²,

Ilie³

et al. 2012

Journal of Parasitology

View full text Add to dashboard Cite

show abstract

“…Previous dairy herd studies have identified herd size, purchase of animals, and calving season as risk factors for Salmonella (Evans and Davies, 1996;Vaessen et al, 1998;Carrique-Mas et al, 2010), N. caninum (Björkman, et al, 1996;Ould-Amrouche et al, 1999;Schäres et al, 2004;Dubey et al, 2007), and L. hardjo (Leonard et al, 2004;Van Schaik et al, 2002;Ryan et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…caninum specific risk factors include the presence of farm dogs, access to pond water, the presence of older animals in herds and rearing home-bred replacements (Bartels et al, 1999;Ould-Amrouche et al, 1999;Schäres et al, 2004;Frössling et al, 2005). Additional risk factors specific to L. hardjo include geographical region, co-grazing with infected animals, access to contaminated water sources and natural-mating (Leonard et al, 2004;Ryan et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Few studies have documented pathogen exposure risk factors for such extensive production systems (Leonard et al, 2004). In addition, the majority of previous studies examined risk factors for the presence of the actual pathogen (Evans and Davies, 1996;Vaessen et al, 1998;Bartels et al, 1999;Carrique-Mas et al, 2010) with limited studies on identification of risk factors associated with bulk milk seropositivity (Leonard et al, 2004;Wedderkoop et al, 2001;Schäres et al, 2004). As bulk milk analysis is becoming an important diagnostic tool at farm level for the purposes of herd health planning (McElroy, 2012), identifying risk factors associated with bulk milk seropositivity would prove beneficial.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Management practices as risk factors for the presence of bulk milk antibodies to Salmonella, Neospora caninum and Leptospira interrogans serovar hardjo in Irish dairy herds

Doherty

Berry

Grady

et al. 2014

Animal

View full text Add to dashboard Cite

A survey of management practices in 309 Irish dairy herds was used to identify risk factors for the presence of antibodies to Salmonella, Neospora caninum and Leptospira interrogans serovar hardjo in extensively managed unvaccinated dairy herds. A previous study documented a herd-level seroprevalence in bulk milk of 49%, 19% and 86% for Salmonella, Neospora caninum and leptospira interrogans serovar hardjo, respectively in the unvaccinated proportion of these 309 herds in 2009. Association analyses in the present study were carried out using multiple logistic regression models. Herds where cattle were purchased or introduced had a greater likelihood of being positive to leptospira interrogans serovar hardjo (P < 0.01) and Salmonella (P < 0.01). Larger herds had a greater likelihood of recording a positive bulk milk antibody result to leptospira interrogans serovar hardjo (P < 0.05). Herds that practiced year round calving were more likely to be positive to Neospora caninum (P < 0.05) compared to herds with a spring-calving season, with no difference in risk between herds that practiced split calving compared to herds that practiced spring calving. No association was found between presence of dogs on farms and prevalence of Neospora caninum possibly due to limited access of dogs to infected materials including afterbirths. The information from this study will assist in the design of suitable control programmes for the diseases under investigation in pasture-based livestock systems.

show abstract

“…The presence of positive dogs on rural properties is an important finding from an epidemiological viewpoint, since it represents a potential risk factor for infection of cattle and other productive species (SCHARES et al, 2004). According to Corbellini et al (2006), for each additional dog on the property the likelihood that a cow would be seropositive increases by a factor of 1.13.…”

Section: Introductionmentioning

confidence: 99%

Seroprevalence of antibodies to Neospora caninum in dogs in the state of Alagoas, Brazil

Sousa

Porto

Albuquerque

et al. 2012

Rev. Bras. Parasitol. Vet.

View full text Add to dashboard Cite

This study investigated occurrences of antibodies to anti-Neospora caninum in dogs in the state of Alagoas, Brazil, and the risk factors associated with the infection. To investigate antibodies against N. caninum, an indirect immunofluorescence antibody test (IFAT) was used. To identify risk factors associated with infection by N. caninum, univariate analyses on variables of interest were conducted. The study analyzed 237 samples from dogs of both sexes and different breeds and ages, both from rural and from urban areas. Ten animals (4.2%) were seropositive: five (4.8%) from rural areas and five (3.8%) from urban areas. Regarding sex, five (4.0%) were male and five (4.5%) were female. In relation to breed, four animals of undefined breed and six of defined breed were positive. The ages of the seropositive animals ranged from two months to eleven years. Results show there are no significant associations between seropositivity and the variables analyzed. Results indicate neosporosis must be included in differential diagnosis of dog neurological disorders.Keywords: Neosporosis, dogs, epidemiology, diagnosis, IFAT. ResumoInvestigou-se a ocorrência de anticorpos anti-Neospora caninum em cães no Estado de Alagoas, Brasil e os fatores de risco associados à infecção. Para a pesquisa de anticorpos contra N. caninum empregou-se a Reação de Imunofluorescênica Indireta (RIFI). Para identificar os fatores de risco associados à infecção pelo N. caninum foi realizada análise univariada das variáveis de interesse. Foram analisadas 237 amostras de cães de ambos os sexos, diferentes raças e idades e procedentes de áreas urbanas e rurais. Obteve-se 10 (4,2%) animais soropositivos, sendo cinco (4,8%) de áreas rurais e cinco (3,8%) de áreas urbanas. Com relação ao sexo, cinco (4,0%) eram machos e cinco (4,5%) fêmeas. Quanto às raças foram positivos quatro animais de raças indefinidas e seis de raças definidas. As idades dos animais soropositivos variaram de dois meses a 11 anos. Os resultados da análise estatística revelaram não haver associação significativa entre a soropositividade e as variáveis analisadas. Os resultados indicam a necessidade de incluir a neosporose no diagnóstico diferencial das desordens neurológicas caninas.

show abstract

Potential risk factors for bovineNeospora caninuminfection in Germany are not under the control of the farmers

Cited by 61 publications

References 27 publications

Serological Survey of Neospora caninum Infection in Cattle Herds From Western Romania

Serological Survey of Neospora caninum Infection in Cattle Herds From Western Romania

Management practices as risk factors for the presence of bulk milk antibodies to Salmonella, Neospora caninum and Leptospira interrogans serovar hardjo in Irish dairy herds

Seroprevalence of antibodies to Neospora caninum in dogs in the state of Alagoas, Brazil

Contact Info

Product

Resources

About