A versatile high-density customized SNP array for augmenting genomic analysis in sheep
Authors:
- Reena AroraRAReena Arora
- Ramesh Kumar VijhRVRamesh Kumar Vijh
- Pooja ChhabraPCPooja Chhabra
- Dinesh Kumar YadavDYDinesh Kumar Yadav
- Raja Kolandanoor NachiappanRNRaja Kolandanoor Nachiappan
- Rekha SharmaRSRekha Sharma
- Sonika AhlawatSASonika Ahlawat
- Syed ShanazSSSyed Shanaz
- Mohsin Ayoub MirMMMohsin Ayoub Mir
- Ashish KumarAKAshish Kumar
- Mandeep KaurMKMandeep Kaur
- 1 January 2026
- journal article
- research article
- Published by Canadian Science Publishing in Genome
- Vol. 69, 1-13
Abstract
We designed a genome-wide high-density SNP array using genetically diverse sheep of the Indian subcontinent. The array includes 627 509 biallelic markers and was validated on 522 individuals from diverse breeds of the Indian peninsula. The average call rate for samples passing quality control was 99.6%, with 96.15% (603 523) markers classified as best and recommended. The high-density SNP array offers dense genomic coverage with an average intermarker distance of 4.6 kb, effectively delineates breed-specific clusters and reveals population stratification, underscoring its utility for genetic analysis, selection, and conservation in sheep. This array addresses the limited representation of Asian and African ovine diversity of the commercially available SNP arrays for sheep. Its applicability across global breeds further supports its value in international ovine genomics.Keywords
Funding Information
- Indian Council of Agricultural Research
This publication has 41 references indexed in Scilit:
- Advancing equine genomics: the development of a high density Axiom_Ashwa SNP chip for Indian horses and poniesFunctional & Integrative Genomics, 2024
- Development and validation of the Axiom-MaruPri SNP chip for genetic analyses of domesticated old world camelidsGene, 2024
- Genome-wide association study of health and production traits in meat sheepAnimal, 2023
- Design and validation of high-density SNP array of goats and population stratification of Indian goat breedsGene, 2023
- Selection of breed-specific SNPs in three Indian sheep breeds using ovine 50 K arraySmall Ruminant Research, 2021
- Identification of two novel SNPs affecting lambing traits in sheep by using a 50K SNP-ChipSmall Ruminant Research, 2020
- Genomics separates the sheep from the goatsNature Biotechnology, 2014
- SNP ascertainment bias in population genetic analyses: Why it is important, and how to correct itBioEssays, 2013
- Mitochondrial DNA diversity in Indian sheepLivestock Science, 2013
- Genetic Variation and Relationship of Six Indian Sheep Breeds Adapted to the Northwestern Arid Zone of RajasthanBiochemical Genetics, 2011