Years ago our agway mineral salesman recommended a new product called rumensen I believe. Was supposed to increase milk production by aiding rumens digestion. We had like 10 cows die of sudden heart attacks (never seen a heart attack in a cow before) started a couple months after we started using it right when it got hot out. I'd check into those cows supplements their feed

Years ago our agway mineral salesman recommended a new product called rumensen I believe. Was supposed to increase milk production by aiding rumens digestion. We had like 10 cows die of sudden heart attacks (never seen a heart attack in a cow before) started a couple months after we started using it right when it got hot out. I'd check into those cows supplements their fed