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Seasonal changes in the prevalence ofHaemonchus andTrichostrongylus hypobiotic larvae in tracer goats in Malaysia

An investigation into the seasonal changes in the population structure of Haemonchus and Trichostrongylus in tracer goats was conducted over 12 months at Serdang, an area in southern West Malaysia with year-round tropical rainfall. Successive groups of parasite-free tracer goats were grazed for a mo...

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Main Authors: Ikeme, M. M., Iskander, Fatimah, Chong, Lee Chu
Format: Article
Language:English
Published: Springer 1987
Online Access:http://psasir.upm.edu.my/id/eprint/113045/1/113045.pdf
http://psasir.upm.edu.my/id/eprint/113045/
https://link.springer.com/article/10.1007/BF02239718?error=cookies_not_supported&code=545acfaf-5f11-475f-bb62-ad92065c5e5f
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spelling my.upm.eprints.1130452025-01-10T07:47:47Z http://psasir.upm.edu.my/id/eprint/113045/ Seasonal changes in the prevalence ofHaemonchus andTrichostrongylus hypobiotic larvae in tracer goats in Malaysia Ikeme, M. M. Iskander, Fatimah Chong, Lee Chu An investigation into the seasonal changes in the population structure of Haemonchus and Trichostrongylus in tracer goats was conducted over 12 months at Serdang, an area in southern West Malaysia with year-round tropical rainfall. Successive groups of parasite-free tracer goats were grazed for a month alongside naturally infected adult goats and necropsied for worm counts 14 days after their removal from pasture. No hypobiotic larvae of Trichostrongylus were recovered. Hypobiotic larvae of Haemonchus were evident during each month of the year but accounted for only a very small proportion of the total Haemonchus burden. Very low levels were encountered from December through to June. Comparatively higher levels of hypobiosis were observed thereafter with a peak of 7.4% in September. The factors responsible for hypobiosis were not clearly defined but the phenomenon was associated with increasing levels of soil moisture storage. Host resistance, adult worm population of tracers and population of ingested L3 were ruled out as possible inducing factors. Springer 1987 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/113045/1/113045.pdf Ikeme, M. M. and Iskander, Fatimah and Chong, Lee Chu (1987) Seasonal changes in the prevalence ofHaemonchus andTrichostrongylus hypobiotic larvae in tracer goats in Malaysia. Tropical Animal Health and Production, 19 (3). pp. 184-190. ISSN 0049-4747; eISSN: 1573-7438 https://link.springer.com/article/10.1007/BF02239718?error=cookies_not_supported&code=545acfaf-5f11-475f-bb62-ad92065c5e5f 10.1007/bf02239718
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description An investigation into the seasonal changes in the population structure of Haemonchus and Trichostrongylus in tracer goats was conducted over 12 months at Serdang, an area in southern West Malaysia with year-round tropical rainfall. Successive groups of parasite-free tracer goats were grazed for a month alongside naturally infected adult goats and necropsied for worm counts 14 days after their removal from pasture. No hypobiotic larvae of Trichostrongylus were recovered. Hypobiotic larvae of Haemonchus were evident during each month of the year but accounted for only a very small proportion of the total Haemonchus burden. Very low levels were encountered from December through to June. Comparatively higher levels of hypobiosis were observed thereafter with a peak of 7.4% in September. The factors responsible for hypobiosis were not clearly defined but the phenomenon was associated with increasing levels of soil moisture storage. Host resistance, adult worm population of tracers and population of ingested L3 were ruled out as possible inducing factors.
format Article
author Ikeme, M. M.
Iskander, Fatimah
Chong, Lee Chu
spellingShingle Ikeme, M. M.
Iskander, Fatimah
Chong, Lee Chu
Seasonal changes in the prevalence ofHaemonchus andTrichostrongylus hypobiotic larvae in tracer goats in Malaysia
author_facet Ikeme, M. M.
Iskander, Fatimah
Chong, Lee Chu
author_sort Ikeme, M. M.
title Seasonal changes in the prevalence ofHaemonchus andTrichostrongylus hypobiotic larvae in tracer goats in Malaysia
title_short Seasonal changes in the prevalence ofHaemonchus andTrichostrongylus hypobiotic larvae in tracer goats in Malaysia
title_full Seasonal changes in the prevalence ofHaemonchus andTrichostrongylus hypobiotic larvae in tracer goats in Malaysia
title_fullStr Seasonal changes in the prevalence ofHaemonchus andTrichostrongylus hypobiotic larvae in tracer goats in Malaysia
title_full_unstemmed Seasonal changes in the prevalence ofHaemonchus andTrichostrongylus hypobiotic larvae in tracer goats in Malaysia
title_sort seasonal changes in the prevalence ofhaemonchus andtrichostrongylus hypobiotic larvae in tracer goats in malaysia
publisher Springer
publishDate 1987
url http://psasir.upm.edu.my/id/eprint/113045/1/113045.pdf
http://psasir.upm.edu.my/id/eprint/113045/
https://link.springer.com/article/10.1007/BF02239718?error=cookies_not_supported&code=545acfaf-5f11-475f-bb62-ad92065c5e5f
_version_ 1821003743180619776
score 13.226497

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