What is colostrum And Why is mothers milk strongly advised to new borns

What is colostrum And Why is mothers milk strongly advised to new borns? 

Answer:  Colostrum also called first milk is the milk produced by mother in late pregnancy. It is rich in antibodies. New born babies have weak immunity

system at birth. 

Through mother's milks, antibodies

are transferred to baby. It persist in the baby’s body for several weeks and provides her passive immunity to fight against many diseases.