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논문 기본 정보

자료유형
학술저널
저자정보
Park, Hee-Bok (Subtropical Livestock Research Institute, National Institute of Animal Science, RDA) Han, Sang-Hyun (Educational Science Research Institute, Jeju National University) Yoo, Chae-Kyoung (Institute of Agriculture and Life Sciences, Gyeongsang National University) Lee, Jae-Bong (Korea Zoonosis Research Institute, Chonbuk National University) Cho, Sang-Rae (Hanwoo Research Institute, National Institute of Animal Science, RDA) Cho, In-Cheol (Subtropical Livestock Research Institute, National Institute of Animal Science, RDA)
저널정보
한국동물번식학회 한국수정란이식학회지 한국수정란이식학회지 제31권 제4호
발행연도
2016.1
수록면
313 - 318 (6page)

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The aim of this study was to identify quantitative trait loci (QTLs) influencing teat number traits in an $F_2$ intercross between Landrace and Korean native pigs (KNP). Three teat number traits (left;right;and total) were measured in 1105 $F_2$ progeny. All experimental animals were genotyped with 173 informative microsatellite markers located throughout the pig genome. We detect that seven chromosomes harbored QTLs for teat number traits: genome regions on SSC1;3;7;8;10;11;and 13. Six of fourteen identified QTL reached genome-wide significance. In SSC7;we identified a major QTL affecting total teat number that accounted for 5.6 % of the phenotypic variance;which was the highest test statistic (F-ratio = 61.1 under the additive model;nominal $P=1.3{\times}10^{-14}$) observed in this study. In this region;QTL for left and right teat number were also detected with genome-wide significance. With exception of the QTL in SSC10;the allele from KNP in all 6 identified QTLs was associated with decreased phenotypic values. In conclusion;our study identified both previously reported and novel QTL affecting teat number traits. These results can play an important role in determining the genetic structure underlying the variation of teat number in pigs.

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