Final answer:
Supplementation of high magnesium minerals helps prevent d) Grass tetany, a condition known as hypomagnesemia, in grazing animals by maintaining adequate magnesium levels.
Step-by-step explanation:
The forage-related animal disorder that supplementation of high magnesium minerals would help prevent when grazing lush cool-season forages in spring is Grass tetany. Grass tetany, also known as hypomagnesemia, is a condition often occurring in grazing animals such as cattle and sheep, characterized by low levels of magnesium in the bloodstream. Due to the rapid growth of cool-season forages in the spring, magnesium may not be available in sufficient quantities in the grasses, leading to this deficiency. Supplementing with high magnesium minerals can help maintain proper magnesium levels in the animals, preventing symptoms such as muscle spasms, convulsions, and, in severe cases, death. Chronic deficiencies of magnesium in animal models have been associated with several health issues, including hypertension, heart rate increases, and metabolic syndromes, underscoring the importance of maintaining adequate magnesium levels.