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Observations on Nematode Infections of Goats and Sheep in West Africa

Published online by Cambridge University Press:  05 June 2009

E. E. Edwards  and
A. S. B. Wilson
E. E. Edwards
Affiliation:
University College of Ghana, Achimota, Ghana, West Africa
A. S. B. Wilson
Affiliation:
University College of Ghana, Achimota, Ghana, West Africa
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Extract

An account is given of the results of preliminary studies of the worm-burden of goats and sheep in Ghana, West Africa, based on fortnightly counts of nematode eggs in their faeces over a period of three years, 1954 to 1956, inclusive. Only eggs of nematodes and Moniezia expansa were encountered apart from an occasional egg of Schistosoma sp., probably S. bovis, in two sheep. Four centres were involved in these investigations differing appreciably in regard to the amount and distribution of the rainfall. It would seem from the results obtained that:—

There are in the drier regions two distinct periods in the year when worm-egg production in goats and sheep reaches a high level compared with that at other times of the year, a high peak of production in June, sometimes a month either earlier or later, and a slight peak in November or December.

There are seasonal variations in the forest belt regions but here the peaks of egg-production are less evident and more irregular in respect to the time of their occurrences in different years.

Type
Research Article
Information
Journal of Helminthology , Volume 32 , Issue 4 , December 1958 , pp. 195 - 210
Copyright
Copyright © Cambridge University Press 1958

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References

REFERENCES

Gordon, H. McL. and Whitlock, H. V., 1939.—“A new technique for counting nematode eggs in sheep faeces.” J. Conn. sci. industr. Res. Aust., 12, 50–52. (W.L. 11140a).Google Scholar
Morgan, D. O., Parnell, I. W. and Rayski, C., 1950.—“Further observations on the seasonal variations in worm egg output in Scottish hill sheep.” J. Helminth., 24, 101–122. (W.L. 11224c.)CrossRefGoogle Scholar
Edwards, E. E., Judd, J. M. and Squire, F. A., 1956a.—“Observations on trypanosomiasis in domestic animals in West Africa. 1. The daily index of infection and weekly hacmatological values in goats and sheep infected with Trypanosoma vivax, T. congolense and T. brucei.” Ann. trop. Med. Parasit., 50, 223–241. (W.L. 1003).CrossRefGoogle Scholar
Edwards, E. E., 1956b.—“Observations on trypanosomiasis in domestic animals in West Africa. 2. The effect on the erythrocyte sedimentation rate, plasma protein, bilirubin, blood sugar, red-cell osmotic fragility, body weight and temperature in goats and sheep infected with Trypanosoma vivax, T. congolense and T. brucei.” Ann. trop. Med. Parasit., 50, 242–251.CrossRefGoogle Scholar