Table 1

Cortisol, total protein and immunoglobulin concentrations of sows on gestation days −5, 24, 66 and 108
Time P-values
Diet GD − 5 GD24 GD66 GD108 SE Diet Time Diet × Time
Cortisol Adequate 64.8a 63.3a 86.8 95.8b 6.9
(nmol/L) Low 51.4a 65.4a 72.4a 101.9A,b 6.4 0.009 < 0.001 0.249
High 52.5 50.0 62.3 73.9B 6.8
Total protein Adequate 77.7 75.1 79.2 76.6A 1.3
(mg/mL) Low 79.3a 75.1a 77.0a 68.8B,b 1.3 0.082 < 0.001 < 0.001
High 79.5 75.1a 80.4b 78.5A 1.4
IgG (mg/mL) Adequate 15.9 12.9a 17.1b 14.4 0.8
Low 14.4 13.5a 17.7b 16.4 0.7 0.697 < 0.001 0.241
High 14.9 13.2a 17.6b 16.8 0.8
IgM (mg/mL) Adequate 6.10 5.26a 7.70b 7.22 0.62
Low 6.42 6.10a 8.01b 7.54 0.58 0.519 < 0.001 0.481
High 6.44 6.89a 8.48b 7.98 0.64
IgA (mg/mL) Adequate 1.15a 0.63b 0.83 1.03 0.12
Low 1.21a 0.85b 1.11 1.10 0.12 0.517 < 0.001 0.012
High 0.90 0.81 0.93 1.06 0.13

GD, gestation day.

Sows were fed diets with adequate (12.1%, n = 13), low (6.5%, n = 15) and high (30%, n = 14) protein levels throughout gestation.

Data are expressed as least-squares means (LS-means) ± standard errors (SE).

P values for effects of diet, time and diet × time interaction.

A,BWithin parameter and time, LS-means with unlike capital superscript letters were significantly different between diets (P < 0.05; Tukey-Kramer test).

a,bWithin a row, LS-means with unlike lower case superscript letters were significantly different between times (P < 0.05; Tukey-Kramer test).

Tuchscherer et al.

Tuchscherer et al. BMC Veterinary Research 2012 8:232   doi:10.1186/1746-6148-8-232

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