High prevalence of Cryptosporidium bovis and the deer-like genotype in calves compared to mature cows in beef cow-calf operations

Feltus, Dawn C.; Giddings, Catherine W.; Khaitsa, Margaret L.; McEvoy, John

doi:10.1016/j.vetpar.2007.10.012

Cited by 41 publications

(29 citation statements)

References 18 publications

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“…It is the most common Cryptosporidium species found in postweaned calves in United States and other countries, and cattle of all ages are probably susceptible to infections with the species (Fayer et al 2005(Fayer et al , 2006Santín et al 2004Santín et al , 2008Feng et al 2007;Brook et al 2009;Feltus et al 2008;Keshavarz et al 2009;Sakai et al 2003;Burenbaatar et al 2008). A previous study of Cryptosporidium-positive specimens from five pre-weaned calves and one postweaned calf in Shanghai, China identified C. bovis in four pre-weaned calves and one post-weaned calf (Feng et al 2007).…”

Section: Molecular Biologic Characterizations Of Cryptosporidium Sppmentioning

confidence: 99%

“…This species was the predominant species infecting 2-to 11-month-old dairy calves (Santín et al 2004). Recently, C. bovis was found in 8.3-46.7% (5/5 of herds) of 6-to 8-month-old calves and 0-3.3% (1/6 of herds) of cows in beef cattle (Feltus et al 2008). A longitudinal study of cryptosporidiosis in dairy cattle from birth to 2 years of age showed a 80% cumulative prevalence of C. bovis in the United States .…”

Section: Molecular Biologic Characterizations Of Cryptosporidium Sppmentioning

confidence: 99%

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Prevalence and distribution of Cryptosporidium spp. in dairy cattle in Heilongjiang Province, China

Liu

Wang

et al. 2009

Parasitol Res

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Few data are available on the molecular characterization of Cryptosporidium spp. in cattle in China. In the present study, a total of 507 fecal specimens from six dairy farms in Heilongjiang Province were examined for Cryptosporidium spp. by light microscopy of concentrates from the formalin-ethyl acetate sedimentation method (for less than 2-month-old calves) or Sheather's floatation method (more than 3-month-old dairy cattle). Twenty-seven post-weaned calves on five farms were positive for Cryptosporidium oocysts. PCR and DNA sequence analysis of the 18S rRNA, actin, and 70 kDa heat shock protein genes identified Cryptosporidium andersoni and Cryptosporidium ryanae, with C. andersoni as the dominant species (26 out of 27). In comparison with other regions of the world, the distribution of Cryptosporidium species in the areas appears to be unique.

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Section: Molecular Biologic Characterizations Of Cryptosporidium Sppmentioning

confidence: 99%

Section: Molecular Biologic Characterizations Of Cryptosporidium Sppmentioning

confidence: 99%

Prevalence and distribution of Cryptosporidium spp. in dairy cattle in Heilongjiang Province, China

Liu

Wang

et al. 2009

Parasitol Res

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“…The species C. parvum infects the intestine of neonatal and pre-weaned calves (0-2 months old) and shows high infection rates in dairy herds (COKLIN et al, 2007;SANTÍN et al, 2008). Infections with C. bovis are common among post-weaned dairy calves (2-11 months-old) in many geographical regions (SANTÍN et al, 2004;FENG et al, 2007;FELTUS et al, 2008). C. ryanae has been found in pre-weaned and post weaned calves (FENG et al, 2007;FAYER et al, 2008;BROOK et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…C. ryanae has been found in pre-weaned and post weaned calves (FENG et al, 2007;FAYER et al, 2008;BROOK et al, 2009). Both C. bovis and C. ryanae are much more prevalent in older, post-weaned dairy cattle (FELTUS et al, 2008;AYINMODE et al, 2010), although they have a low but widespread prevalence in pre-weaned calves (THOMPSON et al, 2007;SANTÍN et al, 2008) and other age groups (FAYER et al, 2006;FENG et al, 2007). C. andersoni has large oocysts and infects the abomasum of juvenile (1-2-year-old heifers) and adult cattle (>24 months old) persisting for years with a long oocyst shedding duration (KVÁC; VÍTOVEC, 2003;ROBINSON et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Identification of Cryptosporidiumspecies and genotypes in dairy cattle in Brazil

Silva

Lopes

Araújo-Junior

2013

Rev. Bras. Parasitol. Vet.

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In this study, we identified Cryptosporidium species and genotypes present in dairy cattle in the central region of São Paulo state, Brazil. Fecal specimens were collected from 200 animals (100 calves and 100 cows) in ten dairy farms. Fecal samples were examined using microscopic examination (ME), enzyme immunoassay (EIA) and polymerase chain reaction (PCR). Cryptosporidium species and genotypes were determined by restriction fragment length polymorphism (RFLP) or DNA sequencing analysis of the SSU-rRNA and GP60 genes. The occurrence of Cryptosporidium spp. infection was 14% (28/200). The occurrence in calves (26%) was significantly higher than in cows (2%). Of the 27 Cryptosporidium-positive specimens submitted to genotyping, C. andersoni was identified in 23 (85.1%), C. bovis in three (11.1%), and the zoonotic C. parvum subtype IIaA15G2R1 in one (3.7%). The study demonstrates that Cryptosporidium spp. infection was common and widespread in dairy cattle in this region and that calves have a high prevalence of C. andersoni. Furthermore, the presence of C. parvum subtype IIaA15G2R1 indicates that dairy calves from this region should be considered a potential source of zoonotic Cryptosporidium oocysts.Keywords: Cryptosporidium spp., cattle, PCR-RFLP, sequencing, genotyping. ResumoNo presente estudo foram identificadas espécies e genótipos de Cryptosporidium originadas de bovinos leiteiros na região central do estado de São Paulo, Brasil. Amostras fecais foram coletadas de 200 animais (100 bezerros e 100 vacas) em 10 propriedades leiteiras. As amostras foram examinadas utilizando os métodos de microscopia óptica (MO), ensaio imunoenzimático (EI) e reação em cadeia da polimerase (PCR). As espécies e genótipos de Cryptosporidium foram determinados pelo método de polimorfismo no tamanho dos fragmentos de restrição (RFLP) ou sequenciamento dos genes SSU-rRNA e GP60. A infecção por Cryptosporidium spp. teve ocorrência de 14% (28/200). A ocorrência em bezerros (26%) foi significativamente maior do que em vacas (2%). Do total de 27 amostras positivas submetidas à caracterização genética, C. andersoni foi identificado em 23 (85.1%), C. bovis em três (11.1%) e C. parvum subtipo IIaA15G2R1 em uma (3.7%). O presente estudo demonstrou que a infecção por Cyptosporidium é comum e difundida em bovinos leiteiros nessa região e que bezerros possuem uma alta prevalência de C. andersoni. A presença de C. parvum subtipo IIaA15G2R1 indica que bezerros leiteiros dessa região devem ser considerados uma fonte de oocistos de Cryptosporidium com potencial zoonótico.

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“…ryanae or Crypto. andersoni, respectively (Feltus et al 2008). A survey of 22 feedlots in seven states (California, Washington, Colorado, Oklahoma, Texas, Nebraska, and South Dakota) found no (0/5274) fresh faecal pats with detectable Cryptosporidium parvum oocysts and 0.9% with Cryptosporidium bovis Figure 3.1 Crypto.…”

Section: Cryptosporidium Parvummentioning

confidence: 99%

Animal Waste, Water Quality and Human Health

Dufour¹,

Bartram²,

Bos³

et al. 2013

wio

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The excreta (faeces and urine) of mammals and birds are widespread across planet Earth and frequently contaminate water that is used for bathing and recreation, that is treated and distributed for human consumption, and that is used to irrigate crops.The risk that such contamination represents to human health is inadequately understood. It is widely assumed that faeces of animals represents a lesser risk to human health than human faeces of because of the 'species barrier' and especially the species-specificity of most viruses. This book points to a rational and systematic way of assessing the risks and to cost-effective approaches to manage them. The information presented is expected to have important consequences for prioritisation of preventive and remedial interventions.

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High prevalence of Cryptosporidium bovis and the deer-like genotype in calves compared to mature cows in beef cow-calf operations

Cited by 41 publications

References 18 publications

Prevalence and distribution of Cryptosporidium spp. in dairy cattle in Heilongjiang Province, China

Prevalence and distribution of Cryptosporidium spp. in dairy cattle in Heilongjiang Province, China

Identification of Cryptosporidiumspecies and genotypes in dairy cattle in Brazil

Animal Waste, Water Quality and Human Health

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