Effects of vitamin D(3) supplementation and UVb exposure on the growth and plasma concentration of vitamin D(3) metabolites in juvenile bearded dragons (Pogona vitticeps).
Comp Biochem Physiol B Biochem Mol Biol. 2010 Mar 4.
Oonincx DG, Stevens Y, van den Borne JJ, van Leeuwen JP, Hendriks WH.
Animal Nutrition Group, Department of Animal Sciences, Wageningen University, Wageningen, The Netherlands.
The effectiveness of dietary vitamin D(3) and UVb exposure on plasma vitamin D metabolites in growing bearded dragons (Pogona vitticeps) was studied. A total of 84 (40 males and 44 females) newly hatched bearded dragons were allocated to six levels of oral vitamin D(3) supplementation (0 to 400%) or six UVb exposure times (2 to 12h). At 3 and 6months of age, blood samples were obtained from each animal and analysed for 25(OH)D(3) and 1,25(OH)(2)D(3). At 3months of age, plasma concentrations of 25(OH)D(3) did not increase with increasing vitamin D(3) supplementation unlike the 1,25(OH)(2)D(3). At 6months of age, plasma concentrations of both 25(OH)D(3) and 1,25(OH)(2)D(3) increased with increasing vitamin D(3) supplementation.
Plasma concentrations in UVb-exposed animals were 18 times higher for 25(OH)D(3) (178.4+/-9.0 vs. 9.9+/-1.3nmol/L) and 5.3 times higher for 1,25(OH)(2)D(3) (1.205+/-0.100 vs. 0.229+/-0.025nmol/L) than in vitamin D(3) supplemented animals at 6months of age.
This study shows that 2h of UVb exposure enables adequate physiological concentrations of plasma vitamin D metabolites to be maintained in growing bearded dragons.
Oral supplementation of vitamin D(3) is ineffective in raising plasma concentrations of 25(OH)D(3) and 1,25(OH)(2)D(3) to concentrations observed in UVb-exposed animals.
VitaminDWiki - 12 studies in both categories Veterinary and UV
This list is automatically updated
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Pigs were given ultraviolet light or vitamin D daily – Aug 2024
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UVB not help chickens much (no surprise – shined on feathers, not legs) – March 2023
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More UVB results in more Vitamin D (chimps in zoos in this case) – Oct 2022
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Chicken bones, eggs, and activated vitamin D in eggs increased with 2 hours of daily UVB – Dec 2019
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Vitamin D in eggs increased 4X after UV lighting near legs was added – April 2019
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Insects create Vitamin D from light (similar to most animals) – July 2018
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Ultraviolet B needed for indoor cows to have enough vitamin D in milk – June 2015
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UVB on legs of chickens resulted in 70 IU vitamin D per egg yoke – July 2013
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Even cows need more than 90 minutes in the sun each day – Feb 2012
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Health and Light - Ott 1973
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Reptiles ate as well with all UV sources – Jan 2011
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Some fish can see in UV – Feb 2010
See also VitaminDWiki
- Overview Vets and vitamin D
- uvb better than vitamin D for iguana file
- Opinion: sun better than UV better than vitamin D
6211 visitors, last modified 21 Oct, 2022,
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This list is automatically updated
- Pigs were given ultraviolet light or vitamin D daily – Aug 2024
- UVB not help chickens much (no surprise – shined on feathers, not legs) – March 2023
- More UVB results in more Vitamin D (chimps in zoos in this case) – Oct 2022
- Chicken bones, eggs, and activated vitamin D in eggs increased with 2 hours of daily UVB – Dec 2019
- Vitamin D in eggs increased 4X after UV lighting near legs was added – April 2019
- Insects create Vitamin D from light (similar to most animals) – July 2018
- Ultraviolet B needed for indoor cows to have enough vitamin D in milk – June 2015
- UVB on legs of chickens resulted in 70 IU vitamin D per egg yoke – July 2013
- Even cows need more than 90 minutes in the sun each day – Feb 2012
- Health and Light - Ott 1973
- Reptiles ate as well with all UV sources – Jan 2011
- Some fish can see in UV – Feb 2010
See also VitaminDWiki
- Overview Vets and vitamin D
- uvb better than vitamin D for iguana file
- Opinion: sun better than UV better than vitamin D
| 6211 visitors, last modified 21 Oct, 2022, |