50 CFR § 14.122 - Food and water.

(a) A nonhuman primate shall be provided water suitable for drinking within 4 hours prior to commencement of transport to the United States unless the shipper's written instructions direct otherwise. A carrier shall provide suitable drinking water to any primate at least every 12 hours after acceptance for transport to the United States, unless instructed in writing to do so more frequently by the shipper.

(b) After acceptance for transport, and unless otherwise instructed in writing by the shipper, a carrier shall provide suitable food to any nonhuman primate at least once every 12 hours.