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. 2018 Aug;31(8):1134-1140.
doi: 10.5713/ajas.17.0781. Epub 2018 Jan 26.

Identification of quantitative trait loci for the fatty acid composition in Korean native chicken

Shil Jin  1 , Hee Bok Park  2 , Dongwon Seo  1 , Nu Ri Choi  1 , Prabuddha Manjula  1 , Muhammad Cahyadi  3 , Samooel Jung  1 , Cheorun Jo  4 , Jun Heon Lee  1
Affiliations

Identification of quantitative trait loci for the fatty acid composition in Korean native chicken

Shil Jin et al. Asian-Australas J Anim Sci. 2018 Aug.

Abstract

Objective: Fatty acid composition is one of the most important meat quality traits because it can contribute to functional, sensorial, and nutritional factors. In this study, quantitative trait locus (QTL) analyses for fatty acid composition traits were investigated in thigh and breast meat of Korean native chicken (KNC).

Methods: In total, 18 fatty acid composition traits were investigated from each meat sample using 83 parents, and 595 F1 chicks of 20 week old. Genotype assessment was performed using 171 informative DNA markers on 26 autosomes. The KNC linkage map was constructed by CRI-MAP software, which calculated genetic distances, with map orders between markers. The half-sib and full-sib QTL analyses were performed using GridQTL and SOLAR programs, respectively.

Results: In total, 30 QTLs (12 in the thigh and 18 in the breast meat) were detected by the half-sib analysis and 7 QTLs (3 in the thigh and 4 in the breast meat) were identified by the full-sib analysis.

Conclusion: With further verification of the QTL regions using additional markers and positional candidate gene studies, these results can provide valuable information for determining causative mutations affecting the fatty acid composition of KNC meat. Moreover, these findings may aid in the selection of birds with favorable fatty acid composition traits.

Keywords: Candidate Gene; Korean Native Chicken; Quantitative Trait Locus; Fatty Acid Composition.

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Conflict of interest statement

CONFLICT OF INTEREST

We certify that there is no conflict of interest with any financial organization regarding the material discussed in the manuscript.

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