What is a composition of colostrum?

Colostrum is the first form of milk produced by mammals immediately after giving birth, rich in nutrients and antibodies. It contains high concentrations of immunoglobulins, particularly IgA, which help protect the newborn against infections. Additionally, colostrum is abundant in proteins, vitamins, minerals, and growth factors, supporting the infant's development and immune system. Its composition varies among species but generally serves to provide essential nourishment and immune support during the critical early days of life.