Young calves and kids will begin chewing on straw, hay or other fibrous materials at a very young age. It is a natural instinct for ruminants to seek out this fiber and begin the development of their rumen. After six weeks, ruminants weaned on haylages like Chaffhaye have been shown to have a 50% larger and more developed rumen. More surface area means a greater ability to absorb nutrients and in turn maximize their genetic potential for growth. Chaffhaye is the premier forage for weaning.