High versus low fat/sugar food affects the behavioral, but not the cortisol response of marmoset monkeys in a conditioned-place-preference task.

摘要: Abstract The effect of a high (chocolate) versus low fat/sugar (chow) food on conditioned-place-preference (CPP) task was evaluated in marmoset monkeys. Anxiety-related behaviors and cortisol levels before after the CPP were also measured. Subjects habituated to two-compartment box then, alternate days, had access only one compartment during daily 15-min conditionings, for total 14 trials. Marmosets provisioned with chocolate chips CC-paired odd-numbered trials standard chow CW-paired even-numbered They then tested preferring context 24-h interval. During conditioning, significantly greater amount (in kcal/trial) consumed than chow, yet foraging pattern both types similar. On test trial, time spent increased compared pre-CPP levels, this response not readily predicted by baseline behavioral or levels. Also, positively correlated time, rather calories consumed. sudden absence exploration, while associated vigilance — anxiety-related marmosets. This profile occurred regardless any concomitant change correlation cortisol. Therefore, more prone be overly marmosets, induce lead behavior its absence.