Abstract
A study was conducted to elucidate the prevalence of Cryptosporidium oocysts in birds in Zaria, Nigeria. A total of 890 faecal samples comprising 132, 305 and 453 from wild, local and exotic birds respectively from different parts of Zaria were examined using the formol-ether concentration technique with safranin–methylene blue stain and auramine phenol stain using light microscopy and fluorescent microscopy respectively. The total prevalence rate was 7.4%. However, Samaru had the highest prevalence rate of 20.6% and Tudun Wada the lowest rate of 2.8%. The difference in the prevalence rates between the different localities of Zaria was found to be statistically significant (P<0.001). Among the different birds sampled, local birds had the highest prevalence rate of 9.5% followed by exotic birds 6.6% and the wild ones with 5.3%. The difference was not statistically significant (P>0.05). In Tudun Wada, where the different sexes were noted, there was no significant statistical difference (P>0.05) in the prevalence rate between male and female birds and none between the different species of wild birds sampled (P>0.05). This study confirms the presence of avian Cryptosporidium in Zaria, Nigeria and indicates that whereas location may influence infection, breed, sex and species of birds may not be significant factors in the epidemiology of the infection.
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