Cow and Gate Growing Up Milk. Cow and Gate Growing Up Milk 1-2 Years meets the nutritional needs of a growing baby between 1 and 2 years. This nutritionally complete breast milk substitute is for bottle fed babies, providing them with the key nutrients needed for a healthy development. It provides essential nutrients like Vitamin D for bone development, and Omega 3 and Iron for support of healthy brain and muscle development. Nutritional benefits: Cow and Gate Growing Up Milk offers many nutritional benefits such as; Vitamin D for bone development, Omega 3 to provide essential fatty acids, Iron to support cognitive development.