Table 2.
Overall 17-d lactation performance for primiparous sows fed control or low CP diets
| Item | Diet | SEM1 | P value | |
|---|---|---|---|---|
| CON2 | LCP | |||
| Number of sows3 | 13 | 11 | — | — |
| Sow initial BW, kg4 | 183 | 177 | 4 | 0.182 |
| Sow ADFI, kg/d, as-fed | 4.68 | 4.66 | 0.07 | 0.727 |
| Litter size at weaning | 11.6 | 11.7 | 0.2 | 0.582 |
| Litter growth rate, kg/d | 2.56 | 2.40 | 0.08 | 0.156 |
| Piglet ADG, g/d | 218 | 204 | 7 | 0.137 |
| Sow BW change, kg | −5.5 | −6.0 | 1.1 | 0.741 |
1Maximum value of the SEM.
2CON = control, 16.2% CP (as-fed; analyzed contents); LCP = low crude protein, 12.7% CP.
3One CON and 3 LCP sows were removed before analysis due to farrowing complications or poor venous access.
4Collected on day 1 of lactation, after litter size standardization.