Animal board invited review: Practical applications of genomic information in livestock

• Published in: Animal (Cambridge, England) Vol. 17; no. 11; p. 100996
• Main Authors: Berry, D.P., Spangler, M.L.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-11-2023; Elsevier
• Subjects: Decision support; DNA; Genotype; Inbreeding; Parentage; Genotype; Inbreeding; Parentage; DNA; Decision support
• ISSN: 1751-7311; 1751-732X
• DOI: 10.1016/j.animal.2023.100996

•Access to high-dimensional genomic information in livestock is accelerating.•Return-on-investment from genotyping is dependent on the information which is generated.•Genomic information on individual animals has a growing number of uses.•The future is likely to involve the genotyping of (almost) all animals at birth.•There will also be a likely transition from genotype microarrays to sequencing.
Access to high-dimensional genomic information in many livestock species is accelerating. This has been greatly aided not only by continual reductions in genotyping costs but also an expansion in the services available that leverage genomic information to create a greater return-on-investment. Genomic information on individual animals has many uses including (1) parentage verification and discovery, (2) traceability, (3) karyotyping, (4) sex determination, (5) reporting and monitoring of mutations conferring major effects or congenital defects, (6) better estimating inbreeding of individuals and coancestry among individuals, (7) mating advice, (8) determining breed composition, (9) enabling precision management, and (10) genomic evaluations; genomic evaluations exploit genome-wide genotype information to improve the accuracy of predicting an animal’s (and by extension its progeny’s) genetic merit. Genomic data also provide a huge resource for research, albeit the outcome from this research, if successful, should eventually be realised through one of the ten applications already mentioned. The process for generating a genotype all the way from sample procurement to identifying erroneous genotypes is described, as are the steps that should be considered when developing a bespoke genotyping panel for practical application.