Please use this identifier to cite or link to this item:
https://hdl.handle.net/1959.11/17359
Title: | Using Genomics to Improve Reproduction Traits in Sheep | Contributor(s): | Daetwyler, H D (author); Bolormaa, S (author); Kemper, K E (author); Brown, D (author) ; Swan, A A (author) ; Van Der Werf, J H J (author) ; Hayes, B J (author) | Publication Date: | 2014 | Handle Link: | https://hdl.handle.net/1959.11/17359 | Abstract: | Reproduction traits are important but difficult to improve in sheep because they are lowly heritable and are recorded later in life. Genomic information can be used for genomic prediction of breeding values to increase the accuracy of selection. Alternatively, genomic information can be used to identify recessive lethal mutations, which cause embryonic losses. We investigated both uses of genomic information using 54k SNP in the Border Leicester, Merino and Polled Dorset breeds. Genomic prediction accuracy of three reproduction traits was greater when compared to pedigree methods, especially in less related animals. Furthermore, making use of both sire and ewe information in the reference set increased accuracies. Ten haplotypes carrying potential recessive lethal mutations were identified. One haplotype spanning 50 SNP alleles was significantly associated with litter size. The findings suggest genomic tools should be used to increase reproductive efficiency in sheep. | Publication Type: | Conference Publication | Conference Details: | WCGALP 2014: 10th World Congress on Genetics Applied to Livestock Production, Vancouver, Canada, 17th - 22nd August, 2014 | Source of Publication: | Proceedings of the 10th World Congress on Genetics Applied to Livestock Production (WCGALP) (Genetics of Trait Complexes: Reproduction), p. 1-6 | Publisher: | American Society of Animal Science | Place of Publication: | Champaign, United States of America | Fields of Research (FoR) 2008: | 070201 Animal Breeding 060408 Genomics |
Fields of Research (FoR) 2020: | 300305 Animal reproduction and breeding 310509 Genomics |
Socio-Economic Objective (SEO) 2008: | 830310 Sheep - Meat 830311 Sheep - Wool |
Socio-Economic Objective (SEO) 2020: | 100412 Sheep for meat 100413 Sheep for wool |
Peer Reviewed: | Yes | HERDC Category Description: | E1 Refereed Scholarly Conference Publication | Publisher/associated links: | https://asas.org/docs/default-source/wcgalp-proceedings-oral/156_paper_10358_manuscript_1334_0b.pdf |
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Appears in Collections: | Animal Genetics and Breeding Unit (AGBU) Conference Publication School of Environmental and Rural Science |
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