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Table 5 Apparent nutrient digestibility (%)2of gestation or lactation diets for parity 3 sows containing various dietary levels of magnesium (Exp. 2)

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 80.0 86.9 85.7 85.6 0.99 0.02 0.02
Gross energy 83.5 86.3 86.2 89.4 1.53 0.83 0.08
Crude protein 83.6 86.6 87.1 86.6 1.06 0.81 0.61
Ether extract 86.4 86.5 85.8 86.0 1.20 0.71 0.31
Crude fiber 51.7 58.6 57.4 60.1 0.98 0.01 <0.01
Late gestation (d 95– 98)
Dry matter 78.1 83.8 83.5 83.9 1.05 0.01 0.01
Gross energy 81.5 84.1 84.0 81.1 1.24 0.01 0.04
Crude protein 83.8 84.0 85.3 83.7 0.88 0.05 0.04
Ether extract 85.9 89.1 86.2 86.4 0.92 0.71 0.93
Crude fiber 50.3 59.9 61.9 58.5 0.81 0.01 0.03
Lactation (d 18– 21)
Dry matter 84.6 86.1 88.2 85.2 0.60 0.41 0.08
Gross energy 77.8 82.1 82.2 75.9 0.72 0.45 0.01
Crude protein 80.9 84.9 84.8 85.5 1.03 0.02 0.03
Ether extract 74.58 79.47 84.14 82.36 0.56 0.14 0.11
Crude fiber 78.9 79.6 84.2 78.6 1.64 0.69 0.34
  1. 1SEM = Standard error of mean.
  2. 2Digestibility was determined using chromium oxide as marker.