+14 What Mineral Do Cows Need When Eating Distillers Ideas. If this cow is receiving about 26 lb of low quality hay and 1 lb of dried distillers grains supplement on an as fed basis, not only would her protein and energy needs be met but ca and p would be supplied at.26% and.2% of the diet respectively. If the steer was eating 9 lb of poor quality hay, 20 lb of corn silage, and 2.5 lb of dried distillers on an as fed basis, then the calf would have.29% ca and.36% p in the diet on a dry matter basis.

“speaking specifically about the beef cow herd and production beef cows, they require macro minerals such as calcium, phosphorous, sodium, chlorine, potassium and. In fact, additional calcium is needed to balance the p. Phosphorus supplementation is required with nearly all types of feeding programs.