Table 3.
Reproductive performance of sows fed diets with total ITM, Replace, and R&R
| Item | Experimental diets1 | ||||
|---|---|---|---|---|---|
| ITM | Replace | R&R | SEM | P-value | |
| Sows, n | 78 | 78 | 77 | — | — |
| Parity, n | 4.78 | 3.59 | 5.03 | — | — |
| Sow BW, kg | |||||
| Gestation (day 35) | 248.83 | 241.17 | 244.59 | 3.394 | 0.253 |
| Gestation (day 110)2 | 266.99 | 263.27 | 266.20 | 1.631 | 0.231 |
| Farrowing standardized3 | 246.30 | 242.58 | 244.80 | 1.625 | 0.247 |
| Sow back-fat, mm | |||||
| Gestation (day 35) | 14.54 | 14.53 | 14.41 | 0.423 | 0.968 |
| Gestation (day 110) | 10.41 | 9.96 | 9.83 | 0.222 | 0.121 |
| Total feed intake, kg | 177.13 | 178.68 | 176.3 | 0.923 | 0.192 |
| Average daily feed intake, kg | 2.33 | 2.35 | 2.32 | 0.012 | 0.191 |
| Reproductive parameters | |||||
| Total born piglets, n4 | 19.07 | 19.14 | 19.27 | 0.472 | 0.951 |
| Piglets born alive, n | 16.17 | 16.38 | 15.98 | 0.416 | 0.790 |
| Born alive litter weight, kg | 20.97 | 20.83 | 21.43 | 0.526 | 0.703 |
| Born alive average BW, kg | 1.33 | 1.30 | 1.34 | 0.027 | 0.608 |
1ITM, inorganic trace mineral; Replace, partial replacement of trace mineral source; R&R, reduce and replace mineral source.
2Sow BW at day 35 used as covariate.
3Sow BW at day 110 excluding litter birth weight.
4Total born includes born alive and stillborn piglets.
a,bMeans within a row with different superscripts indicate significant differences (P < 0.05).