The correct answer includes corn, parts of other cows, feather meal and chicken litter, and chicken, fish, and pig meal. These are common ingredients found in cattle food. Corn is a staple in cattle diets as it provides energy. Parts of other cows, such as bone meal or meat and bone meal, can be included as a source of protein. Feather meal and chicken litter are also used as protein sources. Additionally, cattle food may contain chicken, fish, and pig meal, which are all sources of protein as well.