As the corn processing sector expands, several by-products have appeared that not only help minimize waste but also offer economic advantages. One notable by-product is Corn Gluten Feed (CGF), which is rich in nutrients and has become a practical option for the livestock feed industry.

In East Java, Indonesia, the demand for CGF is particularly strong among farmers due to the presence of manufacturers like Miwon and Cargill, who produce CGF as a by-product. These two companies are the main suppliers of CGF in the local market. Farmers favor CGF because buying it in bulk costs 20–50% less than dried shelled corn.

CGF comes from the wet milling process of corn, where corn kernels are soaked and then ground to separate components such as starch, corn oil, and other valuable by-products. CGF consists of bran, partially extracted endosperm, small amounts of germ, and dried corn steep liquor.

In dairy cattle diets, CGF typically comprises 10–30% of the total feed. It offers the benefit of replacing some corn or other plant proteins and can boost both milk yield and milk fat content—making it a positive choice for dairy farmers aiming to enhance milk quality and quantity.

For sheep and goats, CGF can make up 15–25% of their feed, supporting growth and milk production, and providing a valuable nutritional alternative for these animals.

When it comes to poultry, like laying hens and broilers, CGF inclusion is usually limited to 5–15% of the diet. One key benefit is that CGF improves yolk color due to its xanthophyll content, a trait highly appreciated by consumers.

Pigs also gain from CGF in their diets. It can account for up to 30% of the ration for fattening pigs, whereas for breeding sows, the recommended range is about 10–15%. This flexibility makes CGF a versatile ingredient suitable for different livestock needs.

Overall, CGF offers an effective and budget-friendly nutritional strategy for animal feed. To optimize feed formulations, farmers are encouraged to use ration formulation software or seek advice from animal nutritionists. By carefully integrating CGF, farmers can improve the health and productivity of their livestock. With its strengths and some limitations, CGF presents an appealing opportunity in today’s livestock industry.