Original Research

Seroprevalence of Toxoplasma gondii infection in goats and sheep in Zimbabwe

T. Hove, P. Lind, S. Mukaratirwa
Onderstepoort Journal of Veterinary Research | Vol 72, No 4 | a181 | DOI: https://doi.org/10.4102/ojvr.v72i4.181 | © 2005 T. Hove, P. Lind, S. Mukaratirwa | This work is licensed under CC Attribution-NoDerivatives 4.0
Submitted: 14 September 2005 | Published: 14 September 2005

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T. Hove,
P. Lind,
S. Mukaratirwa,

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Abstract

Seroprevalence rates of Toxoplasma gondii anti-antibodies in adult goats and sheep from different parts of Zimbabwe were determined. A total of 225 (67.9 %) of the 335 serum samples tested were positive for anti-T. gondii IgG antibodies with the indirect fluorescent antibody test. There were differences in antibody seroprevalences among communal land goats from the different agro-ecological zones (Natural regions IIb and III: 80 and 96.7 %, respectively; Natural region IV: 65.9 %; Natural region V: 45 %; and Natural region III had a significantly higher seroprevalence than IV and V. The highest seroprevalences found in Natural regions II b and III are likely to be linked to the existence of more households and hence the possibility of a higher concentration of domestic cats that increases the chances of environmental contamination with their faeces harbouring T. gondii oocysts. The seroprevalence rate in sheep from a large commercial farm (10 %) was significantly lower than that of sheep reared under the communal grazing system (80 %). Overall, significantly higher proportions of seropositive animals had antibody titres of 1:50 (34.2 % of 225) and 1:100 (44 % of 225) as compared to the 9.8 % and 12 % with antibody titres of 1:200 and > 1:400, respectively.

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