What do feeder mice eat? - briefly
Feeder mice are omnivores that eat a mix of grains, seeds, insects, and occasional plant matter.
What do feeder mice eat? - in detail
Feeder mice, commonly bred for reptile, raptor, and other carnivore diets, require a balanced diet that supports rapid growth, strong immune function, and reproductive health. Their nutrition is built around three primary components: protein, carbohydrates, and essential micronutrients.
Protein sources form the core of the diet. High‑quality rodent chow, formulated for laboratory or pet rodents, supplies animal‑derived proteins such as casein, soy, or whey. Some breeders supplement with boiled eggs, cooked lean meat, or insect larvae (e.g., mealworms) to increase amino acid availability. Protein levels typically range from 18 % to 22 % of the diet for adult mice, rising to 20 %–24 % during gestation and lactation.
Carbohydrates and fiber are provided by grains, seeds, and vegetables. Common ingredients include wheat bran, oats, cornmeal, and barley. Small amounts of fresh produce—such as carrots, apples, or leafy greens—add soluble fiber and vitamins, but must be limited to prevent digestive upset. The carbohydrate content generally accounts for 45 %–55 % of total calories, with fiber comprising 5 %–8 %.
Micronutrients and supplements ensure metabolic stability. Commercial rodent diets are fortified with vitamins A, D, E, K, B‑complex, and minerals like calcium, phosphorus, magnesium, and zinc. Breeders may add calcium carbonate or a multivitamin powder to address specific deficiencies, especially in breeding colonies where calcium demand increases.
Water is indispensable. Fresh, clean water should be available at all times, supplied via bottle or sipper system to prevent contamination. In humid environments, water sources must be checked daily to avoid mold growth.
Feeding schedule influences health and breeding efficiency. Juvenile mice receive ad libitum access to food and water to support rapid growth. Adult maintenance mice can be fed twice daily, with portions adjusted to maintain a body condition score of 3–4 on a 5‑point scale. Overfeeding leads to obesity, while underfeeding compromises immunity and reproductive success.
Storage and handling affect diet quality. Dry feed should be kept in airtight containers, protected from moisture and pests. Perishable supplements (e.g., boiled eggs) must be refrigerated and used within 48 hours. All food items should be inspected for mold, spoilage, or foreign contaminants before offering to the colony.
Health monitoring includes regular observation for signs of malnutrition—such as hair loss, lethargy, or abnormal stool—and periodic veterinary checks. Adjustments to protein, fat, or vitamin levels are made based on reproductive performance, litter size, and overall vitality of the feeder mice population.