TITLE

Detection of quantitative trait loci affecting haematological traits in swine via genome scanning

AUTHOR(S)
Yuan-Fang Gong; Xin Lu; Zhi-Peng Wang; Fang Hu; Yan-Ru Luo; Shao-Qian Cai; Chun-Mei Qi; Shan Li; Xiao-Yan Niu; Xiao-Tian Qiu; Jian Zeng; Qin Zhang
PUB. DATE
January 2010
SOURCE
BMC Genetics;2010, Vol. 11, p56
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Background: Haematological traits, which consist of mainly three components: leukocyte traits, erythrocyte traits and platelet traits, play extremely important role in animal immune function and disease resistance. But knowledge of the genetic background controlling variability of these traits is very limited, especially in swine. Results: In the present study, 18 haematological traits (7 leukocyte traits, 7 erythrocyte traits and 4 platelet traits) were measured in a pig resource population consisting of 368 purebred piglets of three breeds (Landrace, Large White and Songliao Black Pig), after inoculation with the swine fever vaccine when the pigs were 21 days old. A whole-genome scan of QTL for these traits was performed using 206 microsatellite markers covering all 18 autosomes and the X chromosome. Using variance component analysis based on a linear mixed model and the false discovery rate (FDR) test, 35 QTL with FDR < 0.10 were identified: 3 for the leukocyte traits, 28 for the erythrocyte traits, and 4 for the platelet traits. Of the 35 QTL, 25 were significant at FDR < 0.05 level, including 9 significant at FDR < 0.01 level. Conclusions: Very few QTL were previously identified for hematological traits of pigs and never in purebred populations. Most of the QTL detected here, in particular the QTL for the platelet traits, have not been reported before. Our results lay important foundation for identifying the causal genes underlying the hematological trait variations in pigs.
ACCESSION #
52798674

 

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