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Articles by G.B. Chang
Total Records ( 2 ) for G.B. Chang
  X.P. Liu , K.W. Chen , K.H. Wang , J.Y. Wang , G.J. Dai , X.Y. Zhang and G.B. Chang
  Xiaoshan chicken is a well-known breed in China. It has good meat quality and three yellow character. SR92A chicken and Xiaoshan chicken are parents. Sixty five offsprings were reared. DNA Fingerprint (DFP) of parental strains were conducted using one middle-repetitive DNA probe EAV (endogenous avian retroviral). Based on presence or absence of band J (3.48 kbp) in their parents, we carry out 4 mating combinations. -/- for absence of band J in both parents; -/+ for absence in sire, presence in dam; +/- for presence in sire, absence in dam; +/+ for presence in both parents. Quantitative traits recorded for offspring are body weight at 75 days and slaughter traits. The results show that the 75 days weight heterosis generated by -/- type is 74.1 g higher than generated by non-selected populations. We can infer that the allele may be corresponding with the different expression of genes between parents and offsprings. We find band J allele has a bearing on weight heterosis, which will lay a solid foundation for locating weight heterosis QTL.
  G.S. Hu , G.B. Chang , Y. Zhang , J. Hong , Y. Liu and G.H. Chen
  The present research was to study the association of polymorphism of Natural resistance-associated macrophage protein1 (Nramp1) with some immune functions in Rugao chicken (RG) and Recessive White chicken (RW). The PCR-SSCP technique was applied to analyze the correlation between the polymorphisms of Nramp1 gene and immune functions (Heterophil/Lymphocyte (H/L), lymphocyte transformation rate and the content of IgM) in 72 RG and 55 RW. The results showed that: the Heterophil/Lymphocyte (H/L), lymphocyte transformation rate and the content of IgM in RG and RW showed significant differences (p<0.05). H/L of AA was significantly lower than BB and AB while the AA’s lymphocyte transformation rate and IgM were significantly higher than the BB’s in both RG and RW. The results demonstrated that the general immune performances of RG were superior to those of RW. The general immune performances of AA were superior to BB and AB.
 
 
 
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