Characterization of QTL for Growth and Meat Quality in Combined Pig QTL Populations

Title
Characterization of QTL for Growth and Meat Quality in Combined Pig QTL Populations
Author(s)
백광현리이[리이]최봉환[최봉환]이윤미[이윤미]마부아람[마부아람]이지홍[이지홍]김관석[김관석]김종주
Keywords
QUANTITATIVE TRAIT LOCI; KOREAN NATIVE PIG; COMBINED LINE-CROSS; BODY-COMPOSITION; OUTBRED LINES; BREEDS; PORK; CARCASS; SCAN
Issue Date
201112
Publisher
ASIAN-AUSTRALASIAN ASSOC ANIMAL PRODUCTION SOC
Citation
ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES, v.24, no.12, pp.1651 - 1659
Abstract
This study was conducted to detect quantitative trait loci (QTL) for thirteen growth and meat quality traits in pigs by combing QTL experimental populations. Two F(2) reference populations that were sired by Korea native pig (KNP) and dammed by Landrace (LN) or Yorkshire (YK) were generated to construct linkage maps using 123 genetic markers (mostly microsatellites) and to perform QTL analysis on porcine chromosomes (SSCs) 1, 2, 3, 6, 7, 8, 9, 11, 13, 14, and 15. A set of line-cross models was applied to detect QTL, and a series of lack-of-fit tests between the models was used to characterize inheritance mode of QTL. A total of 23, 11 and 19 QTL were detected at 5% chromosome-wise level for the data sets of KNPxLN, KNPxYK cross and joint sets of the two cross populations, respectively. With the joint data, two Mendelian expressed QTL for live weight and cooking loss were detected on SSC3 and SSC15 at 1% chromosome-wise level, respectively. Another Mendelian expressed QTL was detected for CIE a on SSC7 at 5% genome-wise level. Our results suggest that QTL analysis by combining data from two QTL populations increase power for QTL detection, which could provide more accurate genetic information in subsequent marker-assisted selection.
URI
http://hdl.handle.net/YU.REPOSITORY/24180http://dx.doi.org/10.5713/ajas.2011.11221
ISSN
1011-2367
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생명공학부 > 생명공학부 > Articles
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