When can you feed a newborn baby horse hay?

Newborn foals should primarily receive their nutrition from their mother's milk for the first few weeks of life. They typically start nibbling on hay around 1 to 2 weeks old, but it should only be offered in small amounts. By about 2 to 3 months, they can gradually increase their hay intake as they transition to solid feeds. Always ensure that the hay is clean and free from mold or contaminants.