Table 6 Effects of magnesium on serum urea nitrogen, calcium, and magnesium concentrations as well as reproductive hormone activities in gilts (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 | ||
Farrowing | |||||||
Urea nitrogen, pmol/L | 8,693.8 | 8,257.9 | 8,001.4 | 8,087.1 | 255.7 | 0.07 | 0.12 |
Estrogen, pmol/L | 68.3 | 69.0 | 70.0 | 73.9 | 2.94 | 0.18 | 0.35 |
Progesterone, pmol/L | 4,598.4 | 4,340.6 | 4,566.0 | 4,273.9 | 140.6 | 0.24 | 0.50 |
Prolactin, ng/L | 133.8 | 161.4 | 149.9 | 138.7 | 8.82 | 0.94 | 0.10 |
Alkaline phosphate, U/L | 8.72 | 9.97 | 9.36 | 9.45 | 0.37 | 0.11 | 0.29 |
Magnesium, mg/100 mL | 1.83 | 2.00 | 1.85 | 1.89 | 0.05 | 0.89 | 0.10 |
Calcium, mg/100 mL | 8.22 | 8.78 | 8.61 | 8.59 | 0.21 | 0.33 | 0.25 |
Weaning (d 28) | |||||||
Urea nitrogen, pmol/L | 8,728.6 | 8,524.1 | 8,308.1 | 8,591.6 | 214.6 | 0.79 | 0.84 |
Estrogen, pmol/L | 12.94 | 13.72 | 13.13 | 13.99 | 0.75 | 0.44 | 0.74 |
Progesterone, pmol/L | 243.1 | 221.4 | 239.1 | 255.1 | 4.14 | 0.34 | 0.31 |
Prolactin, ng/L | 122.9 | 135.5 | 130.3 | 127.8 | 7.64 | 0.78 | 0.59 |
Alkaline phosphate, U/L | 13.62 | 13.80 | 14.26 | 14.79 | 0.63 | 0.16 | 0.36 |
Magnesium, mg/100 mL | 1.36 | 1.44 | 1.34 | 1.42 | 0.09 | 0.94 | 0.99 |
Calcium, mg/100 mL | 5.66 | 5.00 | 5.15 | 5.71 | 0.28 | 0.82 | 0.11 |