identification of genomic regions associated with wool diameter in iranian sheep breeds

نویسندگان

مهدیه راستی فر

دانشجوی کارشناسی ارشد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج اردشیر نجاتی جوارمی

دانشیار، گروه علوم دامی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران و قطب علمی بهبود کمیت و کیفیت لاشة گوسفندان، کرج محمد حسین مرادی

استادیار، دانشکدة کشاورزی و منابع طبیعی دانشگاه اراک، اراک رستم عبداللهی آرپناهی

استادیار، پردیس ابوریحان، دانشگاه تهران، پاکدشت

چکیده

the objective of the present study was to scan the whole genome in sheep for identifying the loci associated with wool diameter. blood samples were collected from 94 animals, consisting 47 samples per each lori-bakhtiary and zel breeds. genotyping of samples were performed using ovine 50k snp chip arrays. quality control filters were applied for the initial genotyping data and 48,056 snps belonging to 90 animals were used in the final analysis. the wool samples of these animals were collected and analyzed for the mean fiber diameter and the proportion of fiber that were equal or more than 30 µm using ofda technology. the fixed effects of herd, birth date and sex were examined and the genome wide association study (gwas) was performed using plink software where fdr correction was used to adjust the error rate. considering the significant fixed effects in the genomic wide association analysis, three snps on chromosomes 1 and 6 (two snps) were identified that significantly affect (p

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