Table 5. Concentration of IgG and IgA in colostrum and milk and piglet serum winter and summer

Winter SEM Summer SEM p-value
Colostrum IgG (mg/mL)1) 36.30 3.22 35.41 3.22 0.85
Colostrum Ig A (mg/mL)1) 3.19 0.77 2.21 0.83 0.39
Milk IgA (mg/mL)2) 1.41 0.19 0.86 0.20 0.07
Piglets serum IgG (mg/mL)
 Day 0 11.75 1.18 9.18 0.83 0.19
 Day 21 2.25 0.75 2.40 0.61 0.93
Piglets serum IgA (mg/mL)
 Day 0 0.05 0.00 0.01 0.00 <0.001
 Day 21 0.11 0.01 0.004 0.01 <0.001
Colostrum collected after birth (0 hours).
Milk collected 21 days post-partum.
SEM, standard error of the mean.