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Table 2 Least squares means and standard errors of marbling, backfat thickness, loineye area, and carcass weight traits according to the genotypes of APM1 genes in Hanwoo

From: Confirmation of genotypic effects for the bovine APM1 gene on marbling in Hanwoo cattle

Trait g.81966377T > C    P Effect  
  CC (N = 3943) CT (N = 3610) TT (N =825)   Additive Dominance
MAR (1-9) 4.992 ± 0.03a 4.942 ± 0.03b 4.693 ± 0.04c <0.0001 0.298 ± 0.06*** 0.198 ± 0.08
BFT (mm) 11.43 ± 0.13c 12.335 ± 0.08b 12.558 ± 0.10a <0.0001 1.127 ± 0.16*** 0.681 ± 0.23
LEA (cm2) 85.512 ± 0.28b 86.325 ± 0.22a 86.563 ± 0.18a 0.0083 0.812 ± 0.36* 1.287 ± 0.51
CAW (kg) 390.646 ± 1.38c 392.985 ± 0.87b 393.322 ± 1.22a 0.2677 2.675 ± 1.75 2.002 ± 2.48
Trait g.81966364D > I    P Effect  
  D/D (N = 6336) D/I (N = 1790) I/I (N = 252)   Additive Dominance
MAR (1-9) 4.544 ± 0.02a 4.82 ± 0.5b 4.885 ± 0.13b <.0001 −0.341 ± 0.14** 0.174 ± 0.14
BFT (mm) 11.815 ± 0.07 11.992 ± 0.13 12.409 ± 0.37 0.179 −0.594 ± 0.37 −0.241 ± 0.46
LEA (cm2) 84.388 ± 0.15 84.729 ± 0.29 85.518 ± 0.8 0.259 −1.129 ± 0.81 −0.448 ± 1.01
CAW (kg) 377.349 ± 0.67 377.537 ± 1.27 377.809 ± 3.43 0.984 −0.46 ± 3.5 −0.085 ± 4.32
  1. The carcass traits of Hanwoo cattle were based on a grading system (http://www.ekape.or.kr/view/eng/system/beef.asp) from KAPE (Korean Animal Products Evaluation)
  2. MAR marbling score, BFT backfat thickness, LEA loineye area, CAW carcass weight
  3. *P < 0.05, **P < 0.01, and ***P < 0.001
  4. a,b and c Different letters denote statistically significant differences between genotypes