Table 2.

The change in total immunoglobulin concentration of first nine milkings postpartum of five Ayrshire cows^a

Milking postpartum	Concentration (g L−1)
	Mean	Range
1.	52	35.0–70.0
2.	27	18.0–46.0
3.	9.0	5.2–15.2
4.	4.6	4.5–5.3
5.	3.4	2.5–3.9
6.	2.6	1.6–3.5
7.	2.3	1.5–2.9
8.	2.0	1.4–3.1
9.	1.6	1.0–2.6

^aData extracted from Korhonen (1977).