Feed that is provided to young animals as an extra ration and is fed in an area that is inaccessible to the mothers is called a:

Answer: Creep feed

Explanation:

In the weaning stages of young farm animals (especially calves, lamb and piglets), they are given a special type of feed to aid their growth and development, this feed is known as the Creep feed.

The creep feed is given specially to the young animals in the absence of their mothers, and is used to introduce the young animals to solid foods.