Maize is generally used for animal feed. It is widely processed into various types of products such as cornmeal, grits, starch, flour, tortillas, snacks, and breakfast cereals. Feeding cows with corn kernels, 18-33% is eliminated from feces, and tablet feeding is the best. At present, because of cost issues, cattle farms in many places use coarse crushing to process corn. Comparing various feeds from the perspective of providing energy, corn is the best energy feed for fattening cattle. Yellow corn is a good source of the carotenoids lutein and zeaxanthin, which are good for eye health and help prevent the lens damage that leads to cataracts. Corn also has smaller amounts of vitamins B, E, and K, along with minerals like magnesium and potassium.