DL-Methionyl-DL-methionine is primarily used in the agricultural and animal feed industries as a dietary supplement to enhance the nutritional value of feed. It serves as a source of methionine, an essential amino acid crucial for protein synthesis, growth, and overall health in livestock, poultry, and aquaculture. By supplementing feed with this compound, it helps improve feed efficiency, promote muscle development, and support immune function in animals. Additionally, it is utilized in pet food formulations to ensure balanced nutrition for companion animals. Its application contributes to better animal performance and productivity in farming operations.