J A Van Wyk
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Explore the profile of J A Van Wyk including associated specialties, affiliations and a list of published articles.
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82
Citations
676
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Recent Articles
1.
Burden D, Bartley D, Besier R, Claerebout E, Elliott T, Hoglund J, et al.
Vet Parasitol
. 2024 May;
329:110187.
PMID: 38728835
This guideline is aimed at those who are involved in the assessment of anthelmintic efficacy in ruminant livestock species (bovine, ovine and caprine). The intent is to provide a framework...
2.
Besier R, Kahn L, Sargison N, Van Wyk J
Adv Parasitol
. 2016 May;
93:181-238.
PMID: 27238006
Haemonchus contortus is a highly pathogenic, blood-feeding nematode of small ruminants, and a significant cause of mortalities worldwide. Haemonchosis is a particularly significant threat in tropical, subtropical and warm temperate...
3.
Besier R, Kahn L, Sargison N, Van Wyk J
Adv Parasitol
. 2016 May;
93:95-143.
PMID: 27238004
The parasitic nematode Haemonchus contortus occurs commonly in small ruminants, and it is an especially significant threat to the health and production of sheep and goats in tropical and warm...
4.
Wang T, Van Wyk J, Morrison A, Morgan E
Vet Parasitol
. 2014 Jun;
204(3-4):258-64.
PMID: 24893698
The abomasal nematode Haemonchus contortus causes severe disease and production loss in small ruminants in warmer regions and is also an emerging threat in many temperate climates. Specific knowledge of...
5.
Reynecke D, Van Wyk J, Gummow B, Dorny P, Boomker J
Vet Parasitol
. 2011 Feb;
177(3-4):224-30.
PMID: 21334814
Test sensitivity and specificity for the FAMACHA(©) clinical test for anaemia due to haemonchosis have previously been shown to be adequate in differentiating between heavily/less heavily infected sheep, but these...
6.
Reynecke D, Van Wyk J, Gummow B, Dorny P, Boomker J
Vet Parasitol
. 2011 Feb;
177(3-4):231-41.
PMID: 21334812
A previously developed multiple regression algorithm was used as the basis of a stochastic model to simulate worm burdens in sheep naturally infected with Haemonchus contortus over five consecutive Haemonchus...
7.
Van Wyk J, Reynecke D
Vet Parasitol
. 2010 Mar;
177(3-4):212-23.
PMID: 20346591
This article is the first of a series aimed at developing specific decision support software for on-farm optimisation of sustainable integrated management of haemonchosis. It contains a concept framework for...
8.
Reynecke D, Van Wyk J, Gummow B, Dorny P, Boomker J
Vet Parasitol
. 2009 Sep;
177(3-4):203-11.
PMID: 19775816
A validation study of the FAMACHA(©) system for clinical evaluation of anaemia due to Haemonchus contortus was conducted on two commercial sheep farms in the summer rainfall region of South...
9.
Kenyon F, Greer A, Coles G, Cringoli G, Papadopoulos E, Cabaret J, et al.
Vet Parasitol
. 2009 May;
164(1):3-11.
PMID: 19450930
Anthelmintic resistance is recognised as a major problem affecting small ruminant production worldwide and now threatens the sustainability of many of these systems. One method that has been proposed to...
10.
Riley D, Van Wyk J
Vet Parasitol
. 2009 May;
164(1):44-52.
PMID: 19446960
The objectives of this study were to estimate genetic parameters for FAMACHA score and related traits at different levels of worm challenge in sheep and to assess the effect of...