Performance improves when the diet is rich in metabolizable protein and balanced in terms of amino acids After calving, cows must rapidly increase dry matter intake to meet nutrient requirements and support the rise in milk production. During the fir

Physiological if mild and transient At calving, the large and sudden demand for calcium associated with the expulsive phase, together with the marked calcium outflow due to colostrum production, leads—even under optimal conditions—to a normal red