2010
DOI: 10.1590/s0102-09352010000600005
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Abstract: Cryptosporidium parvum oocysts were detected in feces of dairy calves raised in Rio de Janeiro State and the risk factors involved in the infection were determined. A hundred calves aging up to 12-month-old from 13 dairy farms were sampled. Polymerase chain reaction was used to detect the presence of oocysts. The zoonotic C. parvum species was detected in 45% animals. Statistical risk factors analyses revealed an association between infection and animals raised in technical systems such as the use of milking e… Show more

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Cited by 7 publications
(10 citation statements)
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“…Sex of the calf was not associated with oocyst/cyst shedding of Cryptosporidium and Giardia species and this is in agreement with the report of Swai et al (2007) and Almeida et al (2010). Although, grazing in pasture (OR = 3.78, CI = 2.35-6.06, P = < 0.001) and sources of water (OR = 0.25, CI = 0.16-0.37, P = < 0.001) were highly associated with Cryptosporidium, there was no evident influence on the occurrence of infection by Giardia spp.…”
Section: Resultssupporting
confidence: 92%
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“…Sex of the calf was not associated with oocyst/cyst shedding of Cryptosporidium and Giardia species and this is in agreement with the report of Swai et al (2007) and Almeida et al (2010). Although, grazing in pasture (OR = 3.78, CI = 2.35-6.06, P = < 0.001) and sources of water (OR = 0.25, CI = 0.16-0.37, P = < 0.001) were highly associated with Cryptosporidium, there was no evident influence on the occurrence of infection by Giardia spp.…”
Section: Resultssupporting
confidence: 92%
“…The present detection rate of Cryptosporidium infection based on microscopic examination is much higher compared to the obtained prevalence in former studies in Thailand, Argentina, Ethiopia, England, India and Wales with the prevalence of 0.6, 19.35, 7.8, 12.50 and 10.2 per cent, respectively (Jittapalapong et al, 2006;Tiranti et al, 2011;Wegayehu et al, 2013;Singla et al, 2013;Smith et al, 2014). Similar results with this study, high prevalence rates were also reported in Canada, Germany, Nigeria, Tanzania and Brazil with the prevalence rates of 32, 41.3, 33.0, 35 and 45 per cent, respectively (Budu-Amoako et al, 2012;Gillhuber et al, 2014;Faleke et al, 2014;Swai and Schoonman, 2010;Almeida et al, 2010).…”
Section: Resultssupporting
confidence: 86%
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“…The presence of C. parvum species in the animals studied was not observed, which corroborates the findings of Almeida et al (14), who concluded that the higher rate of animals positive for Cryptosporidium spp. relative to C. parvum indicates the existence of other species of Cryptosporidium spp.…”
supporting
confidence: 90%
“…se realiza después de que las becerras entran en contacto con otros animales, con el alimento iniciador y con el agua para beber. Como señalan Maldonado et al (1998), el alimento iniciador, que roedores o aves contaminan, actúa como fómite y lo convierte en factor de riesgo; asimismo, el agua para beber se ha identificado como un riesgo debido a la contaminación de los ductos del líquido (Sischo et al, 2000) o del recipiente de bebida (Almeida et al, 2010). La edad debe considerarse como un indicador de riesgo por tratarse de un rasgo individual (Silva Ayçaguer, 2005).…”
Section: Resultados Y Discusiónunclassified