Table 1 Descriptive statistics and least square means of the productivity and liver biometrics by efficiency groups
Measures (unit) | Mean | Standard deviation | Efficient | Inefficient | P value |
|---|---|---|---|---|---|
Residual feed intake (kg/d) | 0.00 | 0.98 | −0.90 | 0.89 | 0.001* |
Average daily gain (kg/d) | 1.77 | 0.25 | 1.74 | 1.76 | 0.662 |
Average feed intake (kg/d) | 9.54 | 1.22 | 8.56 | 10.41 | 0.001* |
Back fat thickness (mm) | 12.17 | 3.06 | 12.27 | 12.09 | 0.885 |
Rib eye area (cm2) | 108.77 | 6.24 | 109.20 | 108.41 | 0.770 |
Body weight (kg) | 535.4 | 48.86 | 533.4 | 545.0 | 0.361 |
Liver weight (kg) | 7.35 | 1.09 | 7.24 | 7.55 | 0.363 |
Liver weight (% body weight) | 1.26 | 0.25 | 1.26 | 1.29 | 0.561 |