THE MERCK VETERINARY MANUAL
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Nutrition in Rodents and Lagomorphs

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Most rodent and lagomorph species do well on diets based on commercial laboratory rodent pellets or rabbit pellets. Rabbits, hares, pikas, marmots, and prairie dogs can be maintained on rabbit pellets, alfalfa or grass hay, and a limited amount of assorted vegetables. Most other sciurids can be fed rat pellets and a limited mixture of sunflower seeds, millet, corn, and rolled oats. Ground squirrels can also be offered a limited amount of green leafy vegetables, carrot, and apple. Most murids, cricetids, gophers, dormice, and jerboas do well on rat pellets; for smaller species, mouse pellets, a seed and grain mix, green leafy vegetables, carrot, and apple can be fed.

Hay should be made available to voles and lemmings. Captive voles may be difficult to manage unless a high-fiber rabbit pellet is used. Muskrats, agoutis, and capybaras will eat a combination of rat and rabbit pellets along with alfalfa hay, carrot, and apple. Porcupines can be fed rat pellets, rabbit pellets, and dry dog food in equal portions along with some apple, carrot, and bread; evergreen (willow) branches should be made available whenever possible. It is also advised to provide bones for gnawing. Beavers will eat a combination of rabbit pellets, large herbivore pellets, and dry dog food, regularly augmented with willow, poplar, aspen, or alder branches.

Guinea pigs can be offered commercial guinea-pig pellets along with greens and carrot. Although guinea pigs and cavies are the only rodents known to require a dietary source of vitamin C, lagomorphs and rodents may benefit from it.

Last full review/revision July 2011 by Joeke Nijboer, PhD; Teresa L. Lightfoot, DVM, DABVP (Avian)

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