Abstract
Little information is available on the epidemiology of Giardia duodenalis in beef cattle from Vietnam. This study was performed to determine the prevalence and genotypes/assemblages of G. duodenalis in native beef calves younger than 6 months in the region. A total of 412 calf fecal samples, randomly selected from 99 small-scale farms located in DacLac and KhanhHoa provinces, central Vietnam, were screened for the presence of G. duodenalis cysts using the zinc-sulfate flotation method followed by iodine staining. The overall prevalence on the sample and herd levels were 13.8 % (57/412) and 42.4 % (42/99), respectively. Molecular analysis in the β-giardin and triosephosphate isomerase genes demonstrated the presence of only G. duodenalis assemblage E in the animals. Since assemblage E has been rarely reported in humans, the zoonotic risk in beef calves in the region appears to be minimal.
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Acknowledgments
This study was financially supported by the National Foundation of Science and Technology Development (NAFOSTED), Ministry of Science and Technology of Vietnam, under a Research Grant coded 106-NN.05-2014.10. The authors acknowledge Drs. Le Duc Quyet and Nguyen Van Thoai for their technical supports during the study.
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The use of animals in this research has been approved by the Scientific Committee of Central Vietnam Veterinary Institute.
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Nguyen, S.T., Fukuda, Y., Nguyen, D.T. et al. Prevalence and first genotyping of Giardia duodenalis in beef calves in Vietnam. Trop Anim Health Prod 48, 837–841 (2016). https://doi.org/10.1007/s11250-016-1013-x
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DOI: https://doi.org/10.1007/s11250-016-1013-x