According to many recent books on animal husbandry, livestock feeding has become much easier and better with the advent of commercially prepared feed mixes. These mixes are scientifically formulated to provide everything your animal needs, and you don’t have to bother with thinking about them.
I followed this advice for my first few years of farming, and then I began to think and to see some of the disadvantages that come with this convenience.
One is freshness. Commercial mixes have been finely ground, blended and reformulated. They decay faster than whole grains. It can be hard to tell just how long your bag of feed has been sitting around or whether it’s still safe to feed. Back when I gave our goats commercial premix, I occasionally got bags that the goats absolutely refused to eat. I couldn’t see or smell anything wrong, but apparently they could. By the time we started raising rabbits I had stopped using commercial feeds for most of our animals, but I heard from other rabbit growers who lost many animals to bags of spoiled feed.
Another concern is provenance. Some feed bag tags tell you how much fat, protein and fiber are in the feed but aren’t specific about the ingredients.