TY - JOUR
KW - calcium
KW - calcidiol
KW - reptile
KW - supplement
KW - UV-lighting
AU - N Hetényi
AU - Z Lang
AU - T Sátorhelyi
AU - I Hullár
AB - Metabolic bone disease associated with inadequate calcium (Ca) and vitamin D supply is still considered very important disease factors of reptiles in captivity. The aim of this study was to compare the effects of oral cholecalciferol supplementation vs. UVB exposure in bearded dragons (Pogona spp.) and Hermann’s tortoises (Testudo hermanni). The 5-year-old tortoises and bearded dragons were randomly divided into UV (12 h/day; 33.5±5.5 µW/cm2 in bearded dragons; 15.5±2.6 µW/cm2 in Hermann’s tortoises) and non-UV [dietary supplement containing 32,600 IU cholecalciferol/kg dry matter (nbearded dragons = 5/group, ntortoises = 6/group)] treatment groups. Blood samples were taken 4 times at 12-week intervals. UV and non-UV treatments are equally adequate for maintaining physiological circulating calcium and calcidiol concentrations in adult bearded dragons. Neither the total Ca (2.8±0.3 vs. 2.9±0.4 mmol/l; p=0.284) nor the calcidiol concentrations (264.8±74.5 vs. 253.5±75.3 nmol/l; p=0.8218) differed significantly. Total Ca concentrations were normal in tortoises, but calcidiol was lower than reference values in both groups (often below the detection limit, <5 nmol/l). Total Ca concentrations showed no significant difference (2.8±0.4 vs. 2.5±0.2 mmol/l, p=0.062). Alkaline phosphatase concentrations of the tortoises were much higher (748±157 IU/l) than reference values. Both treatments are equally adequate for adult bearded dragons to achieve physiological blood levels of calcium and calcidiol. Further investigations (e.g.: histology or DEXA) are required to test the adequacy of treatment in the tortoises. Based on the calcidiol levels neither this level of UVB exposure nor this amount of dietary supplement can be recommended for tortoises.
BT - Berliner und Münchener Tierärztliche Wochenschrift
CY - Hannover
DA - 03/2020
DO - 10.2376/0005-9366-19024
LA - Englisch
N2 - Metabolic bone disease associated with inadequate calcium (Ca) and vitamin D supply is still considered very important disease factors of reptiles in captivity. The aim of this study was to compare the effects of oral cholecalciferol supplementation vs. UVB exposure in bearded dragons (Pogona spp.) and Hermann’s tortoises (Testudo hermanni). The 5-year-old tortoises and bearded dragons were randomly divided into UV (12 h/day; 33.5±5.5 µW/cm2 in bearded dragons; 15.5±2.6 µW/cm2 in Hermann’s tortoises) and non-UV [dietary supplement containing 32,600 IU cholecalciferol/kg dry matter (nbearded dragons = 5/group, ntortoises = 6/group)] treatment groups. Blood samples were taken 4 times at 12-week intervals. UV and non-UV treatments are equally adequate for maintaining physiological circulating calcium and calcidiol concentrations in adult bearded dragons. Neither the total Ca (2.8±0.3 vs. 2.9±0.4 mmol/l; p=0.284) nor the calcidiol concentrations (264.8±74.5 vs. 253.5±75.3 nmol/l; p=0.8218) differed significantly. Total Ca concentrations were normal in tortoises, but calcidiol was lower than reference values in both groups (often below the detection limit, <5 nmol/l). Total Ca concentrations showed no significant difference (2.8±0.4 vs. 2.5±0.2 mmol/l, p=0.062). Alkaline phosphatase concentrations of the tortoises were much higher (748±157 IU/l) than reference values. Both treatments are equally adequate for adult bearded dragons to achieve physiological blood levels of calcium and calcidiol. Further investigations (e.g.: histology or DEXA) are required to test the adequacy of treatment in the tortoises. Based on the calcidiol levels neither this level of UVB exposure nor this amount of dietary supplement can be recommended for tortoises.
PB - Schlütersche Verlagsgesellschaft mbH & Co. KG
PP - Hannover
PY - 2020
T1 - Effects of different vitamin D sources on blood biochemistry of bearded dragons (Pogona spp.) and Hermann’s tortoises (Testudo hermanni)
T2 - Berliner und Münchener Tierärztliche Wochenschrift
TI - Effects of different vitamin D sources on blood biochemistry of bearded dragons (Pogona spp.) and Hermann’s tortoises (Testudo hermanni)
TT - Wirkungen verschiedener Vitamin-D-Quellen auf  die biochemischen Werte des Blutes von Bartagamen und Griechischen Landschildkröten
VL - 133
SN - 0005-9366
ER -