What is colostrum ? How is milk production hormonally regulated ?

Explanation

The mammary glands of a female secrete a yellowish fluid called colostrum during the initial days after parturition.
Significance :
(i) It has less lactose than milk and almost no fat, but it contains more proteins, vitamin A and minerals.
(ii) It is rich in IgA antibodies. It helps to protect the infants digestive tract against bacterial infections.
(iii) It is the ideal food for infants since it contains all constituents in suitable concentration and is easily digestable.
(iv) It is loaded with immune, growth and tissue repair factors.
(v) It acts as a natural antimicrobial agent to actively stimulate the maturation of the indant's immune system.
(vi) It is fully sufficient till 6 months of age for all infants.