Table 3.
Regression terms for the relationship between day of study and litter size for the three Litter Size treatments
| Item1,2 | Coefficient3 | Adjustment4 | SE | P-value5 |
|---|---|---|---|---|
| Intercept, number of piglets | ||||
| Decreased | 11.85 | – | 0.187 | <0.0001 |
| Adjustment for Control | – | 1.89 | 0.232 | <0.0001 |
| Adjustment for Increased | – | 3.70 | 0.232 | <0.0001 |
| Slope, number of piglets per day | ||||
| Decreased | −0.05 | – | 0.015 | 0.002 |
| Adjustment for Control | – | −0.04 | 0.021 | 0.03 |
| Adjustment for Increased | – | −0.11 | 0.021 | <0.0001 |
| Model R2 | 0.55 | – | – | – |
1The regression model included Litter Size treatment, day of study, the interaction of day of study with Litter Size treatment, and the random effect of block.
2Decreased = 2 piglets less than the sow functional teat number; Control = the same number of piglets as the sow functional teat number; Increased = 2 piglets more than the sow functional teat number.
3Intercept or slope for the Decreased treatment.
4Adjustment to intercept or slope for the Control or Increased treatments.
5For the Decreased treatment, P-values indicate whether the intercept or slope are different to 0. P-values for the Control and Increased treatments indicate differences for intercept or slope compared to the Decreased treatment.