Suspected ascorbic acid deficiency in a colony of squirrel monkeys (Saimiri sciureus)

Area of Science:

• Veterinary Medicine
• Primate Nutrition
• Pathology

Background:

• Subperiosteal cranial hematomas were observed in five female squirrel monkeys.
• Clinical signs and pathological lesions suggested scurvy (vitamin C deficiency).

Purpose of the Study:

• To investigate the cause of scurvy in a primate colony.
• To identify the role of feed preparation in ascorbic acid loss.

Main Methods:

• Clinical and pathological examination of affected monkeys.
• Analysis of primate feed for ascorbic acid content.
• Evaluation of feed storage and preparation methods.

Main Results:

• Ascorbic acid levels were significantly reduced in feed soaked in water or left exposed.
• Feed preparation involving soaking led to the loss or destruction of ascorbic acid.
• The manufacturing process, where ascorbic acid is dusted on last, made it vulnerable to washing off.

Conclusions:

• Improper feed management, specifically soaking, caused ascorbic acid depletion and scurvy in squirrel monkeys.
• This outbreak highlights the critical importance of appropriate feed handling and storage practices in primate colonies.
• Ensuring adequate vitamin C intake through correct feed preparation is vital for preventing deficiency diseases in captive primates.