Individual study: Cage Use and Feeding Height Preferences of Captive Common Marmosets (Callithrix j. jacchus) in Two-Tier Cages
Buchanan-Smith H.M., Shand C. & Morris K. (2002) Cage Use and Feeding Height Preferences of Captive Common Marmosets (Callithrix j. jacchus) in Two-Tier Cages. Journal of Applied Animal Welfare Science, 5, 139-149
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Primates: Maximise both horizontal and vertical food presentation locations
A replicated, before-and-after study in 2002 in Scotland, UK (Buchanan-Smith et al. 2002) reported that the amount of time spent feeding in bowls positioned at the top of the enclosure was longer than in bowls positioned on the floor in common marmosets Callithrix jacchus, although no statistical tests were carried out. The marmosets spent more time stationed in the top half of the enclosure than in the bottom half (overall 79% vs 21%) with 59g of food eaten at the top bowl compared to 19g from the bottom bowl. Eight marmosets were housed in pairs in four cages. During the experiment, bowls were placed at different heights, either: on the floor, at the top; or on the floor and at the top. Each pair was observed for 15 minutes per day over nine days for each condition after the food bowls had been presented. (CJ)