Genome-Wide Association Study for Milk Somatic Cell Score in Holstein Friesian Cows in Slovenia

被引:1
作者
Ashja, Ali [1 ]
Zorc, Minja [1 ]
Dovc, Peter [1 ]
机构
[1] Univ Ljubljana, Biotech Fac, Ljubljana 1000, Slovenia
来源
ANIMALS | 2024年 / 14卷 / 18期
关键词
mastitis; somatic cell count; GWAS; SNP array; QUANTITATIVE TRAIT LOCI; UDDER TYPE TRAITS; CLINICAL MASTITIS; DAIRY-CATTLE; GENETIC-PARAMETERS; COUNT TRAITS; RESISTANCE; SELECTION; EXPRESSION; HEALTH;
D O I
10.3390/ani14182713
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
Simple Summary Mastitis is a major issue in dairy farming, leading to significant economic losses and poor milk quality. This study aimed to find genetic markers associated with resistance to mastitis by analyzing the somatic cell score (SCS) in Slovenian Holstein Friesian cows. A genome-wide association study (GWAS) was conducted on genotypic and phenotypic data of dairy cows from a single farm in Slovenia. The study identified five significant genetic markers associated with somatic cell score. These markers were close to six already known candidate genes. The findings suggest that these genetic markers could be used in breeding programs to improve mastitis resistance in dairy cows, potentially leading to healthier herds and better milk production.Abstract Mastitis is a serious challenge for the dairy industry, leading to economic losses and affecting milk quality. The aim of this study is to identify genetic factors associated with mastitis resistance by conducting a genome-wide association study (GWAS) for the somatic cell score (SCS). Phenotypic records of 350 Holstein Friesian cows were obtained from the Slovenian Cattle Recording Scheme Database and consisted of around 1500 lactation data from 2012 to 2023 collected on a single farm in Slovenia. Corresponding genotypic data were also retrieved from the same database and genotyped using the Illumina BovineSNP50 BeadChip (Illumina, Inc., San Diego, CA, USA). For the association study, three SCS parameters were considered, including lactation mean somatic cell score (LM_SCS), maximum SCS value (SCSMAX), and top three mean value of SCS (TOP3). After performing a GWAS using FarmCPU and BLINK models, five significant SNPs associated with the TOP3 trait were found on BTA 14, 15, 22, and 29. The identified SNP markers were closely linked to six known candidate genes (DNASE1L3, SLC36A4, ARMC1, PDE7A, MMP13, CD44). These results indicate potential genetic markers associated with SCS in the Slovenian Holstein Friesian population.
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页数:16
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