Table 9.
Meta‐regression of the associations between moderators and growth parameters.
| Outcomes | Covariates | Intercept | QM | Estimate | p-value | R2 (%) |
|---|---|---|---|---|---|---|
| Feed intake | Strain | 0.13 | 5.79 | 0.37 | 0.016 | 10.91 |
| Inclusion | 0.43 | 5.00 | −0.16 | 0.603 | 0.00 | |
| Age | −0.24 | 2.27 | 0.42 | 0.518 | 0.00 | |
| Sex | −0.31 | 3.70 | 0.39 | 0.054 | 6.48 | |
| ADG | Strain | 0.08 | 8.44 | 0.18 | 0.004 | 16.31 |
| Inclusion | −0.12 | 8.34 | 0.19 | 0.214 | 6.74 | |
| Age | −0.15 | 2.88 | 0.21 | 0.411 | 0.00 | |
| Sex | −0.15 | 0.05 | 0.22 | 0.828 | 0.00 | |
| FCR | Strain | 0.06 | 0.38 | 0.28 | 0.540 | 0.00 |
| Inclusion | 0.01 | 2.42 | 0.29 | 0.789 | 0.00 | |
| Age | −0.14 | 6.12 | 0.25 | 0.106 | 6.80 | |
| Sex | −0.21 | 8.31 | 0.23 | 0.004 | 16.26 |
ADG = Average daily gain; FCR = feed conversion ratio; QM = coefficient of moderators; p = probability difference; R2 = amount of heterogeneity accounted for by covariates.