Spontaneous zinc deficiency in marmosets, saguinus mystax.

Moustached marmosets, Saguinus mystax, developed alopecia, skin lesions and general debilitation approximately 6 months after being brought into our laboratory. These lesions resembled the signs of zinc deficiency in pigs, rats and squirrel monkeys. The marmosets were fed a commercial monkey diet containing 150 parts per million zinc and about 100 g of apples and oranges per week. The addition of 40 parts per million zinc to the drinking water brought about improvement in hair coat and skin condition.