Document Type : Research Paper
Authors
1 Department of Animal Sciences, Faculty of Agriculture and Natural Resources, Arak University, Arak, Iran
2 Department of Animal Sciences, Faculty of Agriculture, University of Ilam. Ilam, Iran.
Abstract
The aim of the present study genome wide association studies based on Gene set enrichment analysis for identifying the loci associated with related to fleece traits in Cashmere goat using the high-confidence SNPs. For this purpose, the 192 Cashmere goats were performed with fiber length, fiber diameter and cashmere yield in GEMMA software. Using the biomaRt2 R package the SNP were assigned to genes. Finally, a gene enrichment analysis was performed with the KOBAS platform from online bioinformatics databases. Bioinformatic analysis showed that the identified genomic regions directly and indirectly overlap with genes affecting the production of keratinocytes, epidermal growth and development, hair follicle growth and collagen. According to pathway analysis, 18 pathways from gene ontology and KEGG pathway were associated with the quantity and quality wool trait (P˂0.05). Among those pathways, the Oxytocin signaling pathway, positive regulation of intracellular protein transport and epidermal cell differentiation has an important role in the hair follicle development, keratinocytes differentiation and development of epidermal. Also, the MAPK signaling pathway, cellular response to hormone stimulus and Insulin secretion significant association with quantity wool traits. Using these findings could potentially be useful for genetic selection in the breeding programs and can be used to understand the genetic mechanism controlling this trait. However, it will be necessary to carry out more association and functional studies to demonstrate the implication of genes obtained from association analyses. Using these findings can accelerate the genetic progress in the breeding programs with the aim of producing fine fibers.
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