Feed your adult Guinea Pig a diet that combines essential fiber and stabilized nutrients with Oxbow Essentials Cavy Cuisine Adult Guinea Pig Food. Adult Guinea Pigs have different nutritional needs than juveniles. They still need a diet high in fiber to keep their digestive systems working properly and Vitamin C, but they need lower levels of calcium, protein and calories than growing Guineas require. Oxbow Essentials Cavy Cuisine Adult Guinea Pig Food is specifically designed to meet the particular nutritional needs of Guinea Pigs over six months. It contains stabilized Vitamin C and an optimal calcium-to-phosphorous ratio for overall health. Feed 1/8 cup pellets daily in addition to unlimited grass hay.