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Seasonal variations in the populations of infective larvae on pasture and the numbers of nematode eggs in the faeces of farmed goats

Published online by Cambridge University Press:  05 June 2009

Wahab A. Rahman  and
G. H. Collins
Wahab A. Rahman
Affiliation:
School of Biological Sciences, Universiti Sains Malaysia, Penang 11800, Malaysia
G. H. Collins
Affiliation:
Department of Veterinary Pathology, Faculty of Veterinary Science, University of Sydney, NSW, Australia
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Abstract

The levels of nematode egg production in goats and the availability of infective larvae (L3) on pasture were investigated on a dairy unit in New South Wales, Australia. The output of eggs by adult goats was always above 300 epg. The profile of the graph of larval availability in herbage paralleled those for temperature and rainfall, suggesting that larval peaks occurred when the temperature and availability of moisture were optimal. The dominant genus was Trichostrongylus, followed by Haemonchus, then Ostertagia. A larger proportion of Haemonchus larvae in the cultures of faeces were collected during the summer months.

Keywords

Goatnematode egg productioninfective larvaepasturetemperaturerainfallCooperiaHaemonchusOesophagostomumOstertagiaTrichostrongylus

Information

Type
Research Article
Information
Journal of Helminthology , Volume 64 , Issue 3 , September 1990 , pp. 263 - 270
Copyright
Copyright © Cambridge University Press 1990

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References

REFERENCES

Chiejina, S. N. (1982) Evaluation of modified Baermann apparatus for the recovery of infective trichostrongylid larvae from herbage samples. Journal of Helminthology, 56, 105–109.CrossRefGoogle ScholarPubMed
Dikmans, G. & Andrews, J. S. (1933) A comparative morphological study of the infective larvae of the common nematodes parasitic in the alimentary tract of sheep. Transactions of the American Microscopical Society, 52, 1–25.CrossRefGoogle Scholar
Edwards., E. E. & Wilson., S. B. (1958) Observations on nematode infections of goats and sheep in West Africa. Journal of Helminthology, 32, 195–210.CrossRefGoogle Scholar
Fabiyi, J. P. (1973) Seasonal fluctuations of nematode infestations in goats in the savannah belt of Nigeria. Bulletin of Epizootic Diseases, Africa, 21, 227–286.Google Scholar
Gordon, H. M. (1933) Differential diagnosis of the larvae of Ostertagia spp. and Trichostrongylus spp. of sheep. Australian Veterinary Journal, 9, 223–237.CrossRefGoogle Scholar
Neiman, P. K. & Shumakovich, E. E. (1976) [Epizootiology of Nematodirus infection in goats in Southern Kirgizia]. Byulletin Vsesoyuznogo Instituta Gel' Minthologii, 17, 45–48 [In Russian, English summay]Google Scholar
Richie, P. D. LE., Efstathiou, J. B., Campbell, J. B. & Altan., Y. (1973) A helminth survey of sheep and goats in Cyprus. Part 1. The seasonal distribution and prevalence of gastro-intestinal parasites. Journal of Helminthology, 47, 237–250.CrossRefGoogle Scholar
Skerman, K. D., Shahlapoor, A. A., Eslami, A. H. & Eliazian., M. (1966) Observations on the incidence, epidemiology, control and economic importance of gastro-intestinal parasites of sheep and goats in Iran. Proceedings of the 3rd International Conference, Association of Veterinary Parasitologist's Veterinary Review, 1966.Google Scholar
Steel, R. G. D. & Torrie, J. H. (1960) Principles and procedures of statistics: A biometrical approach. McGraw-Hill, 633 pp.Google Scholar
Thomas, R. J. (1957) A comparative study of the infective larvae of Nematodirus spp. parasitic in sheep. Parasitology, 47, 60–65.CrossRefGoogle Scholar
Tripathi, J. C. (1968) Seasonal incidence and bionomics of some common gastro-intestinal nematode larvae of sheep and goats. Agra University Journal of Research (Science), 16, 179–182.Google Scholar