Table 4 Apparent nutrient digestibility (%)2of gestation or lactation diets for gilts containing various dietary levels of magnesium (Exp. 1)
From: Effects of magnesium on the performance of sows and their piglets
Item | Supplemental magnesium, % | SEM1 | P value | ||||
|---|---|---|---|---|---|---|---|
0 | 0.015 | 0.03 | 0.045 | Linear | Quadratic | ||
Early gestation (d 45– 48) | |||||||
Dry matter | 85.5 | 86.6 | 86.5 | 86.2 | 0.23 | 0.49 | 0.67 |
Gross energy | 83.1 | 82.6 | 81.8 | 81.4 | 0.20 | 0.70 | 0.75 |
Crude protein | 86.4 | 86.8 | 88.3 | 84.9 | 0.14 | 0.12 | 0.54 |
Ether extract | 86.3 | 80.1 | 87.7 | 85.0 | 0.21 | 0.81 | 0.77 |
Crude fiber | 57.3 | 58.8 | 58.2 | 55.5 | 0.13 | 0.41 | 0.47 |
Late gestation (d 95– 98) | |||||||
Dry matter | 79.3 | 82.9 | 81.2 | 78.3 | 1.49 | 0.49 | 0.08 |
Gross energy | 76.8 | 77.4 | 83.4 | 81.5 | 1.67 | 0.03 | 0.07 |
Crude protein | 77.7 | 84.5 | 80.5 | 79.3 | 1.47 | 0.90 | 0.04 |
Ether extract | 82.9 | 84.7 | 82.6 | 82.5 | 1.35 | 0.57 | 0.68 |
Crude fiber | 48.9 | 58.3 | 56.4 | 52.0 | 1.08 | 0.44 | 0.01 |
Lactation (d 18– 21) | |||||||
Dry matter | 85.3 | 84.3 | 84.7 | 84.2 | 0.88 | 0.44 | 0.71 |
Gross energy | 82.2 | 84.3 | 83.2 | 83.7 | 1.03 | 0.48 | 0.56 |
Crude protein | 84.0 | 84.5 | 85.5 | 82.9 | 0.85 | 0.59 | 0.21 |
Ether extract | 85.9 | 85.7 | 86.1 | 86.1 | 1.16 | 0.86 | 0.97 |
Crude fiber | 48.2 | 53.6 | 58.7 | 50.7 | 0.92 | 0.18 | 0.01 |