Which mineral is essential for proper muscle function in livestock?

Calcium is crucial for proper muscle function in livestock because it plays a vital role in the contraction and relaxation of muscles. When a nerve stimulates a muscle fiber, calcium ions are released from the sarcoplasmic reticulum, allowing the muscle fibers to interact and contract. After contraction, calcium is pumped back into the sarcoplasmic reticulum to relax the muscle. Adequate levels of calcium are necessary to maintain this balance during muscle activity, which is essential for overall locomotion and health in livestock.

Magnesium, while also important for muscle function, primarily serves as a co-factor for enzymes involved in energy production and muscle relaxation. Phosphorus is essential for energy transfer and the formation of ATP, but its role is more about energy metabolism than direct muscle contraction. Iron is important for oxygen transport in the blood and is not directly involved in muscle contraction mechanics. Thus, calcium stands out as the key mineral specifically needed for muscle function.