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. 2018 Sep 24;9:67. doi: 10.1186/s40104-018-0283-8

Table 4.

Relative mRNA expression of rumen epithelium genes in the most- (n = 6) and the least- (n = 6) efficient beef cattle on RFI testing for 70 d during the finishing period

Items RFI1 SE2 Sex SE3 P-value
Most-efficient animals Least-efficient animals Steers Heifers RFI Sex RFI × sex
VFA absorption
 SLC16A1 1.06 0.96 0.04 1.05 0.97 0.05 0.13 0.23 0.43
 SLC16A3 1.18a 1.04b 0.03 1.11 1.11 0.03 0.02 0.89 0.96
 SLC26A3 1.00 0.81 0.06 0.98 0.83 0.07 0.06 0.11 0.75
 HCAR1 1.08 1.12 0.05 1.07 1.13 0.06 0.65 0.47 0.18
 SLC9A1 1.05 1.04 0.01 1.03 1.06 0.01 0.81 0.08 0.04
 SLC9A2 1.06b 1.14a 0.02 1.09 1.11 0.02 0.01 0.48 < 0.01
 SLC9A3 1.09 1.11 0.05 1.13 1.07 0.05 0.74 0.44 0.12
 APPBP2 1.01 1.03 0.04 1.01 1.02 0.04 0.80 0.83 0.11
 HIF1A 1.05 1.04 0.01 1.06 1.03 0.01 0.69 0.12 0.01
VFA metabolism
 ACSS1 1.12 1.23 0.14 1.25 1.10 0.15 0.57 0.47 0.56
 ACSS2 0.99 0.95 0.05 0.98 0.96 0.06 0.54 0.80 0.60
 ACO1 0.69 0.69 0.02 0.70 0.68 0.02 0.95 0.62 0.08
 ACO2 1.07 1.06 0.01 1.07 1.06 0.01 0.42 0.86 0.02
 PCCA 1.04 1.01 0.03 0.99 1.06 0.03 0.32 0.07 0.73
 SLC25A20 1.11 1.05 0.03 1.12a 1.04b 0.03 0.11 0.04 0.17
Ketogenesis
 ACADS 1.05 1.00 0.02 1.01 1.04 0.03 0.12 0.41 0.33
 ACAT1 1.17 1.06 0.04 1.13 1.09 0.05 0.09 0.46 0.45
 HMGCL 1.10a 1.01b 0.03 1.04 1.06 0.03 0.04 0.53 0.44
 BDH1 1.04 0.98 0.03 1.02 1.00 0.03 0.13 0.59 0.04
 HMGCS2 1.16a 0.99b 0.06 1.11 1.04 0.05 0.04 0.37 0.47
 TECR 1.05 1.04 0.02 1.05 1.04 0.03 0.83 0.60 0.08
Pyruvate Metabolism
 LDHA 1.03a 0.97b 0.02 0.98 1.02 0.02 0.02 0.09 0.96
 LDHB 1.07 0.99 0.03 1.00 1.06 0.04 0.09 0.18 0.83
 PDHA1 1.09b 1.18a 0.02 1.13 1.14 0.03 0.02 0.70 0.02
 PC 1.04 1.02 0.03 1.01 1.06 0.03 0.74 0.20 0.45
Other metabolic pathways
 PPARA 1.27 1.25 0.05 1.25 1.27 0.06 0.80 0.85 0.79
 PPARG 1.00 1.00 0.02 0.98 1.02 0.02 0.88 0.14 0.66
 PPARD 1.07a 0.99b 0.02 1.01 1.04 0.02 0.01 0.18 0.37
 FFAR2 1.04 0.93 0.04 0.87b 1.11a 0.05 0.09 < 0.01 0.02
 RGS5 1.02 1.06 0.09 0.99 1.10 0.11 0.75 0.38 0.51
 NQO1 1.14 1.04 0.04 1.06 1.11 0.05 0.12 0.41 0.80
Immune/inflammation-response
 TLR2 1.02 0.97 0.02 0.98 1.01 0.03 0.15 0.41 0.18
 TLR4 1.09 1.15 0.07 1.09 1.14 0.08 0.56 0.57 0.68

Means with different superscripts (a, b) within row represent differences among overall RFI or sex effects (P ≤ 0.05)

1RFI residual feed intake

2SE standard error of the mean for RFI effect

3SE standard error of the mean for sex effect