What is the nutritional value of feeding wheat hay to cattle?

Wheat hay is very high in fibre (acid detergent fibre), and low in protein and energy. It's only good if you're feeding it to cows in mid-gestation, not to growing calves, breeding bulls, growing replacement heifers, young calves, lactating cows, cows in late gestation, or dairy cattle, unless you are really on to feeding supplements that contain high protein and energy.