The protein content of colostrum is greater than that of milk produced subsequently during a dairy cow’s lactation. This high protein content:单项选择题

A

Is simply due to leakage of normal serum proteins such as albumin into the mammary gland during the initiation of lactation

B

Is there to provide greater protein nutrition to the newborn calf

C

Is simply present because of a reduced water content of the colostrum, which is ‘thicker’ than normal milk

D

Is there to enhance palatability of the first feeds to the newborn calf

E

Is present because immunoglobulins are essentially protein chains and colostrum is high in immunoglobulins

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