Nutrients such as carbohydrates, proteins, fat, minerals and vitamins provide for optimal development of bone, flesh, feathers and eggs. At the chick stage there is a higher demand for nutrition to match the rapid growth and feather development. The feeding management of layer pellets is aimed to enable them to attain the sexual maturity at the desired age but at the same time avoiding obesity. From week 18, pellets start to enter their laying period, reaching peak of lay around 28 weeks of age and typically maintain egg production until 72 weeks of age.