Organic acid concentrations and digesta movement in the gastrointestinal tract of the bushbaby (Galago crassicaudatus) and Vervet monkey (Cercopithecidae pygerythrus)

Studies were conducted to compare digestive functions in two species of sub‐human primate, the bushbaby (Galago crassicaudatus) and the Vervet monkey (Cercopithecidae pygerythrus). Major differences were observed in the rate at which digesta markers moved through their respective gastrointestinal tracts, and in the concentration of lactic acid present in the gut. In both species, the caecum and colon were the principle sites of microbial activity and organic acid production.