USDA quality standards are based on measurable attributes that describe the value and utility of the product. For example, Beef quality standards are based on attributes such as marbling (the amount of fat interspersed with lean meat), color, firmness, texture, and age of the animal, for each grade. Standards for each product describe the entire range of quality for a product, and the number of grades varies by commodity. There are eight grades for beef, and three each for chickens, eggs, and turkeys. On the other hand, there are 38 grades for cotton, and more than 312 fruit, vegetable, and specialty product standards.
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