Poultry feeds typically contain a combination of grains, protein sources, vitamins, and minerals. Some of the common ingredients in poultry feeds include:

1. Corn: A major source of energy in poultry feeds, corn is high in carbohydrates and low in protein.
2. Soybean meal: A common protein source in poultry feeds, soybean meal is high in amino acids and is essential for growth and development.
3. Wheat: A source of energy and protein in poultry feeds, wheat is also high in fiber and can help to improve digestion.
4. Fishmeal: A source of high-quality protein and essential fatty acids, fishmeal is commonly used in poultry feeds.
5. Meat and bone meal: A byproduct of the meat processing industry, meat and bone meal is high in protein and minerals, and is often used as a source of calcium and phosphorus in poultry feeds.
6. Oats: A source of energy and fiber, oats are often included in poultry feeds to improve digestion and provide extra nutrition.
7. Vitamins and minerals: Poultry feeds are typically supplemented with vitamins and minerals, including vitamin A, vitamin D, vitamin E, calcium, phosphorus, and selenium, to ensure that the birds receive all the nutrients they need for growth, development, and good health.

The specific ingredients and their proportions will depend on the age, weight, and productivity of the birds, as well as the specific goals of the farmer. It is important to consult with a poultry nutritionist or a veterinarian to develop a feeding plan that meets the nutritional needs of your birds.