Abstract: The benefits of animal colostrum to its neonates have been widely documented and more attention has been paid to its benefit to human health. In this study, the changes of composition and Immunoglobulin (Ig) content in milk of Alpine goats 1 week after parturition were investigated. The results showed that the content of protein, total solids and Ig in goat milk decreased sharply 48 h after parturition; The content of fat in first three milk increased and then decreased slowly; The content of lactose fluctuated between 4% and 5%; The content of protein in first three milk of primiparous goats was 16.5%, 10.7% and 6.8%, respectively, higher than those in first three milk of multiparous goats (7.0%, 4.8% and 4.1%); The content of IgG in first two milk of primiparous goats was 59.9 mg/ml and 34.7 mg/ml, and IgM was 6.14 mg/ml and 2.37 mg/ml, respectively, higher than those in first two milk of multiparous goats (IgG was 18.1 mg/ml and 13.9 mg/ml and IgM was 1.95 mg/ml and 0.98 mg/ml, respectively); No significant difference of IgA content in milk of primiparous and multiparous goats was found.

Key words: colostrum, immunoglobulin, alpine goat