Figure 5.

IgG secretion and colostrum volume are coregulated, with a stronger association than other secreted components such as glucose and lactose. (A,B) IgG concentration and Bx values were not correlated to colostrum volume. Measurements for IgG concentration and Bx values remained within a constant range even with the highly variable range in colostrum volume (0.75 to 11 L; n = 18). (C, D) Total IgG secreted (and total protein secreted) was in strong correlation to colostrum volume (P < 0.001), indicating that IgG secretion and acquisition of colostrum fluid volume are significantly associated. (D, E) Total glucose and total lactose secreted also showed a significant association with colostrum volume (P = 0.002 and P < 0.001, respectively), but the relationships appeared weaker than that observed for total IgG towards higher volumes.