Alfalfa is a perennial flowering plant also called lucerne and is from the pea family Fabaceae. It is grown as an important forage crop in many parts of the world. It tends to be cultivated for livestock fodder and has been done so for centuries.
It comes in either straight hay form or in cubes which have been moulded to be treats for animals such as chinchillas.
Alfalfa hay is fine for chinchillas to eat but it should not be on its own. It should be fed as part of a balanced diet along with other types of hay such as meadow or Timothy hay. This is because alfalfa hay is high in calcium, oxelate acids, and protein.
What alfalfa hay is good for is for young chinchillas or chinchillas that are breeding.
Alfalfa hay can be fed in small amounts, but it is easier to get its amount right by feeding it in cubes.
Because of its content, alfalfa cubes are strictly a chinchilla treat once or twice a week. They can however, be fed daily to those chinchillas that are deficient in calcium production.