ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2017, Vol. 48 ›› Issue (11): 2046-2058.doi: 10.11843/j.issn.0366-6964.2017.11.005

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Novel Genetic Mutations in Porcine SLA-DOB and CD4 Significantly Affect the Routine Blood Traits of Pregnant Landrace Sows

ZHANG Feng-xia1, YANG Ting1, AO Hong2, TAN Zhen1, XING Kai1, ZHAI Li-wei1, YU Ying1*, WANG Chu-duan1*   

  1. 1. College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
    2. Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
  • Received:2017-05-11 Online:2017-11-23 Published:2017-11-23

Abstract:

This study aimed to find single nucleotide polymorphism (SNP) sites and molecular markers affecting the routine blood traits of pregnant sows. Porcine SLA-DOB and CD4 were chosen as candidate genes, blood samples were randomly collected from 358 pregnant Landrace sows and used to detect 19 routine blood indexes, then association analysis was conducted between the polymorphic sites of candidate genes and the routine blood traits.We found that 12 mutations, in which SNP1, SNP2 and SNP3 of SLA-DOB gene as well as Ins9, SNP10 and SNP11 in CD4 gene were all newly discovered mutations. SNP1 was significantly associated with mean platelet volume (MPV) (P<0.01), hematocrit (HCT) and red cell volume distribution width SD (RDW_SD) (P<0.05); SNP2 was extremely significantly associated with MPV(P<0.01); SNP3 was significantly associated with mean corpuscular hemoglobin (MCH) and mean corpuscular hemoglobin concentration (MCHC) (P<0.05); Ins9 was significantly associated with mean corpuscular volume (MCV) (P<0.05) and MPV (P<0.01); SNP10 and SNP11 were significantly associated with MCV, MCH, MPV (P<0.01) and RDW_SD (P<0.05); meanwhile, SNP10 was significantly associated with MCHC (P<0.05). These novel mutations are potential important polymorphic loci affecting the routine blood traits in pregnant sows. The results suggest that the SLA-DOB and CD4 genes as well as their genetic mutations can be as important candidate genes and key molecular markers affecting immunity of pregnant sows.

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