If your budget for cow minerals doesn’t stretch year-round, at least make sure your females get what they need that last trimester of pregnancy.
“We need to focus the most on mineral nutrition the last trimester of pregnancy and the first 100 days following calving when cows are rebreeding,” says John Arthington, University of Florida animal scientist. “That includes both the quality of the mineral nutrition as well as the assurance they are eating the mineral in the proper amount.”
He explains, “Copper (Cu) and zinc (Zn) are both excreted from the body during stress, and calving is very stressful. Cows need stores in their tissues to replenish those lost in calving. They are also putting minerals in the calf through fetal growth.”
FULL STORY PDF