DIETARY VITAMIN D3 INFLUENCE ON SERUM 25-HYDROXY VITAMIN D CONCENTRATIONS IN CAPTIVE SUGAR GLIDERS (PETALIRUS BREVICEPS)

A pilot study was performed to investigate the impact of dietary vitamin D on circulating 25-hydroxyvitamin D (25[OH]D) metabolite concentrations in sugar gliders (Petaurus breviceps). The study with diets containing 0, 0.2 (low), or 0.4 (moderate) International Units vitamin D-3 per gram of dry matter and fed to adults at 2 locations. Serum 25[OH]D concentrations did not differ between animals fed produce only (no added vitamin D either D-2 or D-3) for 3 weeks (8.83 +/- 0.98 nmol/L), n = 6, or low dietary levels (7.86 +/- 3.80 nmol/L), n = 7, continuously for multiple years. Conversely, animals consuming diets containing moderate vitamin D-3 levels displayed increased circulating concentrations (15.00 +/- 3.59), n = 8, after 3 weeks. Despite the response to diets supplemented with vitamin D, overall metabolite levels were low and may indicate minimal metabolic dependence on this nutrient in sugar gliders, similar to processes documented in other hindgut fermenters. Copyright 2018 Elsevier Inc. All rights reserved.