Name the essential amino acid that is typically deficient in plant-based feeds.

Lysine is considered the essential amino acid that is typically deficient in plant-based feeds. This is significant because lysine plays a crucial role in protein synthesis, hormone production, and calcium absorption, making it vital for growth and overall health in livestock and other animals. While many plant-based feeds provide certain amino acids in adequate amounts, lysine often falls short, especially in grains and cereals commonly used in animal diets. Therefore, when formulating diets for livestock, it's important to ensure that lysine levels are adequate, which might involve supplementing with animal proteins or specific lysine-rich feed ingredients. This understanding is fundamental in achieving optimal animal growth, health, and productivity.