Performing a genome-wide association study (GWAS) might add to a better understanding of the development of claw disorders and the need for trimming. Therefore, the aim of the current study was to perform a GWAS on claw disorders and trimming status and to validate the results for claw disorders based on an independent data set. Data consisted of 20,474 cows with phenotypes for claw disorders and 50,238 cows with phenotypes for trimming status. Recorded claw disorders used in the current study were double sole (DS), interdigital hyperplasia (IH), sole hemorrhage (SH), sole ulcer (SU), white line separation (WLS), a combination of infectious claw disorders consisting of (inter-) digital dermatitis and heel erosion, and a combination of laminitis-related claw disorders (DS, SH, SU, and WLS). Of the cows with phenotypes for claw disorders, 1,771 cows were genotyped and these cow data were used for the GWAS on claw disorders. A SNP was considered significant when the false discovery rate ≤ 0.05 and suggestive when the false discovery rate ≤ 0.20. An independent data set of 185 genotyped bulls having at least 5 daughters with phenotypes (6,824 daughters in total) for claw disorders was used to validate significant and suggestive SNP detected based on the cow data. To analyze the trait "trimming status" (i.e., the need for claw trimming), a data set with 327 genotyped bulls having at least 5 daughters with phenotypes (18,525 daughters in total) was used. Based on the cow data, in total 10 significant and 45 suggestive SNP were detected for claw disorders. The 10 significant SNP were associated with SU, and mainly located on BTA8. The suggestive SNP were associated with DS, IH, SU, and laminitis-related claw disorders. Three of the suggestive SNP were validated in the data set of 185 bulls, and were located on BTA13, BTA14, and BTA17. For infectious claw disorders, SH, and WLS, no significant or suggestive SNP associations were detected. For trimming status, 1 significant and 1 suggestive SNP were detected, both located close to each other on BTA15. Some significant and suggestive SNP were located close to SNP detected in studies on feet and leg conformation traits. Genes with major effects could not be detected and SNP associations were spread across the genome, indicating that many SNP, each explaining a small proportion of the genetic variance, influence claw disorders. Therefore, to reduce the incidence of claw disorders by breeding, genomic selection is a promising approach.

scihub/10.1016/j.paid.2020.110545.pdf

McLarnon, Matthew James Walter;Tarraf, Rima C.(Bissett School of Business, Mount Royal University, Canada;Alberta Health Services, Canada)

Matthew J.W. McLarnon; Rima C. Tarraf

Personality and Individual Differences

Personality and Individual Differences, 171, 2021

Vol.171

sm84892379

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Referenced by: doi:10.1080/00223890902935878 doi:10.1080/10705510903008204 doi:10.1177/2167702616657069 doi:10.1111/spc3.12018 doi:10.1016/j.paid.2017.10.027 doi:10.1016/j.jrp.2017.11.012 doi:10.1007/s10508-017-0937-1 doi:10.1016/j.paid.2013.02.010 doi:10.1177/1073191113514105 doi:10.1016/j.paid.2004.09.016 doi:10.1037/a0033266 doi:10.1027/1614-0001/a000274 doi:10.1016/j.paid.2020.110074 doi:10.1016/j.paid.2017.02.049 doi:10.1080/10705511.2014.961800 doi:10.1037/rev0000111 doi:10.1177/1745691616666070 doi:10.1177/0963721414547737 doi:10.1016/s0092-6566(02)00505-6 doi:10.1037/met0000045 doi:10.1037/bul0000299 doi:10.1037/per0000222 doi:10.1016/j.paid.2019.03.024

类型: 期刊

作者及作者单位: McLarnon, Matthew James Walter;Tarraf, Rima C.（Bissett School of Business, Mount Royal University, Canada;Alberta Health Services, Canada）

期刊名: Personality and Individual Differences

年份: 2021

卷号: Vol.171

页码: P110545

摘要: Recent work on the Dark Triad has underscored the role of both general and specific factors...

Recent work on the Dark Triad has underscored the role of both general and specific factors...

2020-11-25