Oxbow s Cavy Cuisine - Adult Guinea Pig Food is made from timothy grass meal which includes the high fiber adult guinea pigs need. However it contains a lower level of protein calories and calcium than alfalfa-based pellets. Adult animals digestive systems do not require the same level as that of younger animals. Cavy Cuisine - Adult Guinea Pig contains stabilized Vitamin C and an optimal calcium-to-phosphorus ratio that helps maintain a healthy body. When fed with Oxbow grass hays and treats Cavy Cuisine - Adult Guinea Pig provides complete stabilized nutrition.