Diet for Rats

As with any pet, good quality food and clean, fresh water must be provided at all times. In the wild, these animals feed on leaves, seeds, roots, fruits and insects. Pelleted rodent rations are recommended for feeding in captivity, which are processed as dry blocks or pellets. Typical maintenance diets contain about 14% protein and 4% to 5% fat, while diets for growth and reproduction contain 17% to 19% protein and 7% to 11% fat. Seed diets are also formulated for mice and rats, but these diets should only supplement the basic rodent pellet as a treat item. Rodents prefer sunflower-based diets to pellets, but these seeds are low in calcium and high in fat and cholesterol. When fed exclusively, seed diets can lead to obesity and nutritional deficiencies.

The pet's appetite should be monitored closely. Many factors affect the rodent's food intake, including the ambient temperature, humidity, food quality, breeding status, as well as the pet's health status. On average, an adult mouse will consume about 15 gm of feed and 15 ml of water per 100 gm body weight daily. Comparatively, an adult rat will consume approximately 5 gm of feed and 10 ml of water per 100 gm body weight daily. Rats typically eat at night.

Water should be provided in water bottles equipped with sipper tubes. The sipper tube keeps the water free from contamination. The tubes must be positioned low enough to allow the pet easy access.Inadequate water consumption leads to dehydration, lower body weight, infertility and death. These rodents drink only a fraction of the total bottle volume, but the bottle should be emptied, cleaned and refilled with fresh water daily.

...that should help you with information on a rats diet