Using citrus by-products in farm animals feedingImportance of citrus by-products in ruminants feeding: His utilization of agro-industrial by-products may be economically worthwhile, since conventional feedstuffs are often expensive.Ruminant feeding systems based on locally available by-product feedstuffs (BPF) are often a practical alternative because the rumen microbial ecosystem can utilize BPF which often contain high levels of structural fiber to meet their nutrient requirements for maintenance, growth, reproduction and production. 6Citrus by-products are utilized as a low cost nutritional supplement to the diets of cattle