This research demonstrates how common mushroom fungi can transform agricultural waste (corn stover) into nutritious animal feed through a simple two-week fermentation process. The treatment makes the feed more digestible and nutritious for cattle and other ruminants, offering a sustainable solution for both waste management and animal nutrition. Impacts on everyday life: • Provides a cost-effective way to convert crop waste into valuable animal feed • Reduces agricultural waste and promotes environmental sustainability • Helps lower livestock feeding costs for farmers • Improves the efficiency of animal production systems • Demonstrates practical applications of biotechnology in agriculture