Table 5. Influence of various milk by-products levels in weaned pig diet on IgA and IgG of weaned pigs¹⁾

Criteria	Treatments²⁾				SEM	p-value
Criteria	NM	LM	MM	HM	SEM	Linear	Quadratic
IgA (mg/mL)
2 weeks	0.32	0.25	0.27	0.17	0.025	0.127	0.799
5 weeks	0.61	0.89	0.73	0.79	0.084	0.681	0.327
IgG (mg/mL)
2 weeks	1.87	2.00	1.95	1.78	0.052	0.622	0.220
5 weeks	3.06	3.24	3.36	3.40	0.080	0.109	0.661

Least squares means of 6 observations per treatment.
NM, almost no milk by-products, 5% / 0%; LM, lower milk by-products, 10% / 5%; MM, middle milk by-products, 20% / 10%; HM, high milk by-products, 30% / 15%.
IgA, immunoglobulin A; IgG, immunoglobulin G.