Table 5.
Impact of feed level during the last week of gestation on blood biochemical variables of the piglets at birth (n = 8 sows/feed level)
Feed level (FL), kg/d | Parity (P) | P-value | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Item | 1.8 | 2.4 | 3.1 | 3.7 | 4.3 | 5.0 | SEM | Gilt | Sow | SEM | Trt | P | FL × P | Linear | Quadratic | Cubic |
Glucose, mmol/L | 2.20 | 2.56 | 2.55 | 2.80 | 2.94 | 2.48 | 0.23 | 2.65 | 2.53 | 0.11 | 0.15 | 0.59 | 0.79 | 0.10 | 0.08 | 0.38 |
Lactate, mmol/L | 5.12 | 5.76 | 5.72 | 5.84 | 5.24 | 4.64 | 0.52 | 5.72 | 5.05 | 0.26 | 0.29 | 0.09 | 0.83 | 0.37 | 0.05 | 0.97 |
pH | 7.36 | 7.34 | 7.32 | 7.33 | 7.35 | 7.34 | 0.02 | 7.35 | 7.33 | 0.01 | 0.34 | 0.10 | 0.50 | 0.66 | 0.13 | 0.40 |
O2, mmol/L | 3.50 | 4.66 | 4.29 | 4.19 | 4.28 | 3.89 | 0.28 | 4.53a | 3.74b | 0.12 | 0.09 | <0.001 | 0.28 | 0.62 | 0.008 | 0.11 |
CO2, mmol/L | 29.7 | 28.1 | 28.6 | 29.3 | 28.9 | 30.5 | 1.26 | 28.8 | 29.6 | 0.59 | 0.60 | 0.19 | 0.64 | 0.48 | 0.19 | 0.77 |
Ca2+, mmol/L | 1.42 | 1.43 | 1.42 | 1.44 | 1.43 | 1.43 | 0.02 | 1.40b | 1.45a | 0.01 | 0.93 | <0.001 | 0.12 | 0.53 | 0.73 | 0.66 |
Na+, mmol/L | 137 | 138 | 137 | 138 | 136 | 139 | 0.89 | 138 | 137 | 0.46 | 0.17 | 0.09 | 0.05 | 0.57 | 0.82 | 0.13 |
K+, mmol/L | 4.43 | 4.54 | 4.38 | 4.27 | 4.58 | 3.85 | 0.18 | 4.25 | 4.43 | 0.09 | 0.06 | 0.06 | 0.28 | 0.05 | 0.12 | 0.22 |
Ca2+(7.4), mmol/L1 | 1.38 | 1.39 | 1.37 | 1.39 | 1.41 | 1.40 | 0.02 | 1.37b | 1.41a | 0.01 | 0.16 | <0.001 | 0.42 | 0.10 | 0.69 | 0.65 |
Anion gap, mmol/L | 13.1ab | 14.1a | 13.0ab | 11.7b | 12.5b | 12.8ab | 0.78 | 13.3a | 12.4b | 0.36 | 0.03 | 0.03 | 0.14 | 0.15 | 0.57 | 0.05 |
Hemoglobin, mmol/L | 6.78 | 7.19 | 7.26 | 6.91 | 6.87 | 6.73 | 0.21 | 7.18 | 6.91 | 0.11 | 0.12 | 0.08 | 0.41 | 0.53 | 0.67 | 0.02 |
Oxyhemoglobin, % | 50.9 | 62.5 | 59.8 | 59.7 | 62.1 | 51.9 | 3.42 | 62.2a | 53.5b | 1.71 | 0.06 | <0.001 | 0.20 | 0.81 | 0.002 | 0.88 |
Deoxyhemoglobin, % | 41.3 | 35.6 | 39.3 | 38.3 | 36.8 | 45.8 | 3.49 | 36.2b | 42.9a | 2.01 | 0.22 | 0.005 | 0.87 | 0.46 | 0.11 | 0.64 |
Oxygen saturation, % | 53.1 | 61.5 | 59.4 | 60.9 | 60.2 | 52.5 | 3.79 | 63.0a | 52.8b | 1.70 | 0.11 | <0.001 | 0.22 | 0.90 | 0.007 | 0.92 |
Hematocrit, % | 32.3 | 34.8 | 34.3 | 32.8 | 32.6 | 34.9 | 1.03 | 34.3a | 32.3b | 0.53 | 0.08 | 0.05 | 0.19 | 0.56 | 0.86 | 0.004 |
1Measured at pH of 7.4.
a,bMeans within a row with different superscript differ (P < 0.05).