Why do dairy cows need balanced feed when pasture is poor?

Dairy cows require balanced feed, especially when pasture quality is poor, because the production of milk is an energy-intensive process that demands significant caloric intake. A high-producing dairy cow may need to consume up to 150 pounds of forage daily to meet these metabolic requirements.1

When pasture is insufficient or of low quality, it cannot provide the necessary density of nutrients, such as protein, energy, and essential minerals like calcium and phosphorus, required to sustain high milk yields and maintain the animal's health. As ruminants, cows rely on a complex four-chambered stomach to process fibrous plant material. If the available forage is poor, the cow may be unable to ingest enough volume to satisfy its nutritional needs, leading to a deficit that must be corrected through supplemental feed to ensure both the cow's well-being and consistent milk production. Providing a balanced diet is an ethical responsibility for farmers to prevent malnutrition and ensure the humane treatment of livestock.21