Identification of Loci Associated with Parasite Resistance in Australian Sheep

Author(s)
al Kalaldeh, Mohammad
Van Der Werf, Julius H
Gondro, Cedric
Publication Date
2015
Abstract
This study aimed to identify loci underlying variation in parasite resistance, as measured by worm egg count (WEC), in a large multi-breed sheep population using genome-wide association studies (GWAS) and regional heritability mapping (RHM) approaches. A total of 7153 animals with both genotype data and WEC phenotypes were included in this analysis. Strong evidence of association was observed on chromosome 2 by both approaches. However, RHM had a greater power to identify loci than GW AS analysis. RHM identified an additional region at the genomewide significance level on chromosome 6. This region was also previously found to be associated with mastitis resistance and facial eczema susceptibility in sheep, indicating that some pleiotropic effects are possibly affecting a wide range of sheep diseases. Three other regions on chromosome I, 3 and 24 reached the suggestive threshold.
Citation
Proceedings of the Association for the Advancement of Animal Breeding and Genetics, v.21, p. 69-72
ISBN
9780646945545
ISSN
1328-3227
Link
Language
en
Publisher
Association for the Advancement of Animal Breeding and Genetics (AAABG)
Title
Identification of Loci Associated with Parasite Resistance in Australian Sheep
Type of document
Conference Publication
Entity Type
Publication

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