Genome-wide association studies for the concentrations of insulin, triiodothyronine, and thyroxine in Chinese Holstein cattle

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  • Qian Fu Gan, Fujian Agriculture and Forestry University
  • ,
  • Yi Ran Li, Fujian Agriculture and Forestry University
  • ,
  • Qing Hua Liu, Fujian Agriculture and Forestry University
  • ,
  • M. Lund
  • Guo Sheng Su
  • Xue Wu Liang, Fujian Agriculture and Forestry University

To further understand the genetic structure that is associated with insulin (INS) and thyroid hormones (TH), including triiodothyronine (T3) and thyroxine (T4), in Chinese Holstein cows, we conducted a genome-wide association study (GWAS) of thyroid hormones and insulin in cows. We conducted GWAS analysis on 1217 Chinese Holstein cows raised in southern China and found 19 significant single nucleotide polymorphisms (SNPs) in this study: 10 SNPs were associated with INS, 5 SNPs were associated with T3, and 4 SNPs were associated with T4. In our study, the GWAS method was used for preliminary screening on related genes of traits, and due to insufficient relevant literature, a functional analysis of genes could only be based on human studies. We observed that DGKB from Bos taurus chromosome (BTA)4 is strongly associated with insulin secretion. We found that EXOC4 gene was significantly correlated with T3 and T4 traits. Another significant SNP was located in the CYP7A1 gene, which has been confirmed to be affected by thyroid hormones.

OriginalsprogEngelsk
TidsskriftTropical Animal Health and Production
Vol/bind52
Nummer4
Sider (fra-til)1655-1660
Antal sider6
ISSN0049-4747
DOI
StatusUdgivet - jul. 2020

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