A comparison of outdoor and indoor housing of rhesus monkeys (Macaca mulatta) (1970)

Banerjee, B. N., Woodard, G.

Abstract

Survival in the outdoor pens averaged 80-90%, which was the same as for the indoor monkeys. Body weight gain in the outdoor monkeys averaged 62% increase, in comparison to 43% gain in the indoor monkeys over the same time period. The outdoor monkeys showed significantly better reproductive performance than did those indoors. The cost for maintaining the outdoor monkeys was considerably less than for maintaining monkeys indoors.