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Articles

Effects of eight InDel variants in FHIT on milk traits in Xinjiang brown cattle

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Pages 486-494 | Published online: 13 May 2020
 

Abstract

In our previous genome-wide association study (GWAS), we identified the fragile histidine triad diadenosine triphosphatase (FHIT) gene in Xinjiang brown cattle (XJBC) as a candidate gene associated with cattle productive traits, with potential application in mark-assisted selection (MAS) in cattle breeding. FHIT is a prototype of a class of tumor suppressor genes that contain genomic loci mapped to common fragile loci. Here, 388 healthy and unrelated XJBC were selected to identify insertion/deletion (InDel) variants in the bovine FHIT and assess their effects on milk traits. Eight of the thirteen InDel loci were found to be polymorphic in FHIT. The polymorphism information content of the eight loci ranged from 0.061 to 0.375. The correlation analysis showed that all the new InDel variants were significantly related to six different milk traits (p < 0.05). The following variants presented a significant relationship with productive traits: P2-23bp with the 305 milk yield (p = 0.005) in the sixth parity; P3-24bp with the milk fat yield (p = 0.009) in the third parity; P5-21bp with the somatic cell score (p = 0.001) in the first parity and with the milk protein percentage (p = 0.002) in the sixth parity; and P7-26bp with the somatic cell score (p = 0.003) in the sixth parity. These findings will help evaluate InDel genotypes, within and between cattle breeds and identify potential target loci to accelerate progress in MAS in cattle breeding.

Author contributions

Conceptualization, Xianyong Lan and Xixia Huang; Data curation, Xixia Huang; Formal analysis, Xianyong Lan; Funding acquisition, Dan Wang and Xixia Huang; Investigation, Xing Ju, Menghua Zhang and Chen Wei; Methodology, Xixia Huang; Project administration, Xianyong Lan and Xixia Huang; Resources, Hui Jiang; Software, Dan Wang; Supervision, Xianyong Lan; Validation, Xianyong Lan and Xixia Huang; Visualization, Xing Ju; Writing - original draft, Xing Ju; Writing, review and editing, Xing Ju, Xianyong Lan and Xixia Huang.

Acknowledgments

We thank the Urumqi Xinjiang Brown Cattle Breeding Farm, Tacheng Area Xinjiang Brown Cattle Breeding Farm, Yili Xinhe Xinjiang Brown Cattle Breeding Farm and the Xinjiang Tianshan Animal Husbandry for their cooperation and support. We also thank Shaanxi Key Laboratory of Molecular Biology for Agriculture and The Life Science Research Core Services (LSRCS) of Northwest A&F University (Northern Campus) for their cooperation and support.

Disclosure statement

We confirm that this manuscript has not been published in whole or in part and is not being considered for publication elsewhere. There are no ethical conflicts of interest for all authors. All authors approved the final version of the manuscript for submission.

Additional information

Funding

This study was funded by the National Natural Science Foundation of China [31860630], Department of Education, Xinjiang Uygur Autonomous Region [XJEDU2017I005], Xinjiang Autonomous Region Scientific and Technological Support Projects [2018E02052].

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