Table 1.

Mean quantity and ratio of the Ig subtypes in bovine colostrum.

Ig	IgG		IgM	IgA	Source
	IgG1	IgG2
Quantity (mg mL−1)	47.60	2.90	4.20	3.90	[3]
	75.00	1.90	4.90	4.40	[12]
	34.96	6.00	4.32	1.66	[13]
Ratio (%)	85–95		≤7	≤5	[4]