Food and Water Deprivation

In the USDA, APHIS Animal Care Resource Guide Policy #11 "Painful and Distressful Procedures", "Food and/or water deprivation or restriction beyond that necessary for normal presurgical preparation" is provided as an example of "...procedures that may cause more than momentary or slight distress." 

Association of Primate Veterinarians.

These guidelines were developed " provide information to researchers, veterinarians and institutional animal care and use committees (IACUCs) on how to approach fluid regulation in a manner consistent with animal health and welfare while not compromising data collection."