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

¹⁾Colostrum collected after birth (0 hours).

²⁾Milk collected 21 days post-partum.

SEM, standard error of the mean.