Bovine immunoglobulin G, β-lactoglobulin, α-lactalbumin and serum albumin in colostrum and milk during the early post partum period

摘要

Colostrum and milk samples from 60 Holstein-Friesian cows were analysed for concentrations and yields of immunoglobulin G (IgG), β-lactoglobulin (β-1g), α-lactalbumin (α-la) and serum albumin (BSA) throughout the first 16 milkings post partum (8 d of lactation) using a single radial immunodiffusion assay. Concentrations (mg/ml, means±SD) at first milking were IgG 59.8±28.5, β-lg 14.3±4.6, α-la 2.04±0.6, BSA 1.21±0.44.