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Table 3 Effects of magnesium on performance in parity 3 sows and their piglets (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
Number born per litter2 12.1 13.7 12.8 12.4 0.37 0.93 0.04
Number of pigs born alive per litter 10.4 12.5 11.4 10.8 0.35 0.91 0.01
Average pig weight at birth, kg 1.27 1.30 1.46 1.42 0.06 0.04 0.09
Pigs weaned per litter 9.21 10.64 10.0 9.43 0.21 1.00 0.01
Average pig weight at weaning, kg 7.1 7.7 7.3 6.9 0.18 0.46 0.03
Wean to estrus interval, d 7.1 6.3 6.1 6.8 0.19 0.30 0.01
Constipation rate3, % 64.2 42.8 35.7 21.4 0.06 0.02 0.36
Average daily lactation feed intake of sows, kg 5.12 5.13 5.17 5.10 0.62 0.56 0.82
  1. 1SEM = Standard error of mean.
  2. 2Number of litters represented per dietary treatment.
  3. 3Constipation rate (%) was defined as numbers of pigs on a treatment with constipation/(total number of pigs × 28d) × 100%.