Table 2.
Descriptive statistics and estimated genetic parameter of the study subjects.
| Traitsa | Abbreviation | Unitb | Descriptive statistics | Estimated genetic parameterc | |||||
|---|---|---|---|---|---|---|---|---|---|
| N | Mean | SD | Phenotypic variance | Heritability | |||||
| Production traits | |||||||||
| Average daily gain from birth to 105 kg body weight (BW) | TDG | g/day | 857 | 650 | 71 | 2849 | (179) | 0.53 | (0.07) |
| Average daily gain from birth to 30 kg BW | DG30 | g/day | 479 | 451 | 36 | 1118 | (87) | 0.21 | (0.10) |
| Average daily gain from 30 to 105 kg BW | DG105 | g/day | 483 | 858 | 118 | 8649 | (716) | 0.53 | (0.09) |
| Ultrasound backfat thickness | BF | mm | 468 | 22.76 | 3.91 | 11.97 | (1.02) | 0.63 | (0.08) |
| Respiratory disease traits | |||||||||
| Atrophic rhinitis score | AR score | – | 618 | 0.93 | 0.81 | 0.64 | (0.04) | 0.28 | (0.09) |
| Lesion score of mycoplasma pneumonia of swine | MPS score | % | 620 | −1.76 | 0.51 | 0.22 | (0.01) | 0.35 | (0.10) |
| Immune-related traits | |||||||||
| Phagocytic activity at 105 kg BW | PA_105 | 106 RLU | 848 | 0.52 | 0.33 | 0.08 | (0.00) | 0.19 | (0.06) |
| Phagocytic activity at 7-week old | PA_7w | 106 RLU | 857 | 0.54 | 0.32 | 0.09 | (0.01) | 0.19 | (0.09) |
| Complement alternative pathway activity at 105 kg BW | CAPA_105 | OD413 | 846 | −0.48 | 0.34 | 0.08 | (0.00) | 0.03 | (0.03) |
| Complement alternative pathway activity at 7-week old | CAPA_7w | OD413 | 842 | −0.50 | 0.29 | 0.07 | (0.00) | 0.09 | (0.07) |
| Total number of white blood cells at 105 kg BW | WBC_105 | ×104/mL | 839 | 0.27 | 0.08 | 0.01 | (0.00) | 0.25 | (0.07) |
| Total number of white blood cells at 7-week old | WBC_7w | ×104/mL | 846 | 0.28 | 0.10 | 0.01 | (0.00) | 0.30 | (0.10) |
| Ratio of granular leucocyte to lymph cells at 105 kg BW | RGL_105 | – | 850 | −0.16 | 0.26 | 0.03 | (0.00) | 0.10 | (0.05) |
| Ratio of granular leucocyte to lymph cells at 7-week old | RGL_7w | – | 682 | −0.17 | 0.19 | 0.03 | (0.00) | 0.03 | (0.07) |
| Plasma concentrations of cortisol at 105 kg BW | CORT_105 | µg/dL | 764 | −0.01 | 0.35 | 0.11 | (0.01) | 0.09 | (0.05) |
| Plasma concentrations of cortisol at 7-week old | CORT_7w | µg/dL | 468 | 0.32 | 0.30 | 0.08 | (0.01) | 0.21 | (0.11) |
| Antibody production at 105 kg BW | AP | Titre | 840 | 1.68 | 0.39 | 0.13 | (0.01) | 0.32 | (0.07) |
| Serum concentration of interleukin 10 at 105 kg BW | IL-10 | pg/mL | 550 | 0.81 | 0.73 | 0.54 | (0.03) | 0.20 | (0.09) |
| Serum concentration of interleukin 13 at 105 kg BW | IL-13 | pg/mL | 517 | 2.96 | 0.58 | 0.32 | (0.02) | 0.08 | (0.07) |
| Serum concentration of interleukin 17 at 105 kg BW | IL-17 | pg/mL | 554 | 1.44 | 0.65 | 0.42 | (0.03) | 0.27 | (0.10) |
| Serum concentration of interferon γ at 105 kg BW | IFN-γ | pg/mL | 346 | 1.56 | 0.90 | 0.46 | (0.04) | 0.00 | 0.00 |
| Serum concentration of tumor necrosis factor α at 105 kg BW | TNF-α | pg/mL | 258 | 1.89 | 0.44 | 0.20 | (0.02) | 0.24 | (0.16) |
aMPS and immune-related traits were transformed to the natural logarithmic scale and the descriptive statistics of the transformed values are shown.
bTiter unit is equivalent to 104/dilution degrees of sample serum.
cStandard errors are shown in parentheses.