Distillers grains are beneficial for dairy cows for several reasons:

1. High protein content: Distillers grains are a good source of protein, which is essential for milk production and overall growth and development in dairy cows. Protein helps support muscle maintenance, milk production, and overall health in dairy cows.

2. Energy-dense: Distillers grains are energy-dense, providing a concentrated source of calories for dairy cows. This can help support milk production and maintain body condition in dairy cows.

3. Improved milk production: The high energy and protein content of distillers grains can lead to improved milk production in dairy cows. By providing a nutrient-dense feed option, dairy cows may be able to produce more milk efficiently.

4. Cost-effective feed option: Using distillers grains as a feed ingredient can be a cost-effective option for dairy producers. It provides a nutritious feed source that can help reduce overall feed costs while still meeting the nutritional needs of dairy cows.

5. Sustainable feed option: Distillers grains are a co-product of the ethanol production process, making them a sustainable feed option for dairy cows. By utilizing distillers grains, dairy producers can contribute to reducing food waste and promoting sustainability in their operations.