In March, most cattle producers are thinking about spring grass, dealing with muddy gates, and cutting back on winter feeding. Mineral programs often get overlooked. But this is when late-winter mineral deficiencies tend to show up in beef cattle.The signs are usually subtle, not dramatic. You won’t find a disaster in the pasture. Instead, you might notice a cow not cycling on time, a calf lacking its usual shine, or a group that just seems a bit off. Nothing clearly points to a mineral problem, but something isn’t right.
And most of the time, the issue didn’t begin in March.
The problem often begins in December or January, when cows start depending more on stored forage. As winter goes on, they use up their internal reserves, especially for nutrients like copper, phosphorus, and vitamin A. By March, these reserves are low, and performance can drop.
Late-winter mineral gaps show up now because the cows’ reserves are nearly gone. Reproduction, immune function, and calf growth are usually affected first. This is why managing minerals in March is more important than many producers think.
Here’s what you should know as we move into spring: (1) why late-winter mineral issues happen, (2) the early warning signs to watch for, and (3) immediate steps you can take to protect herd intake, reproduction, and performance.
