Serum 25-hydroxyvitamin D3 and 24R,25-dihydroxyvitamin D3 concentrations in adult dogs are more substantially increased by oral supplementation of 25-hydroxyvitamin D3 than by vitamin D3
We previously found a weak response in serum 25-hydroxyvitamin D3 (25(OH)D3) concentrations when dogs were supplemented with oral vitamin D3 (D3). In the present study, we determined the relative potency of oral 25(OH)D3 compared with D3 for increasing vitamin D status in dogs with low serum 25(OH)D...
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Cambridge University Press
2017-01-01
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| Series: | Journal of Nutritional Science |
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| Online Access: | https://www.cambridge.org/core/product/identifier/S2048679017000088/type/journal_article |
| _version_ | 1811155916106498048 |
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| author | Lauren R. Young Robert C. Backus |
| author_facet | Lauren R. Young Robert C. Backus |
| author_sort | Lauren R. Young |
| collection | DOAJ |
| description | We previously found a weak response in serum 25-hydroxyvitamin D3 (25(OH)D3) concentrations when dogs were supplemented with oral vitamin D3 (D3). In the present study, we determined the relative potency of oral 25(OH)D3 compared with D3 for increasing vitamin D status in dogs with low serum 25(OH)D concentrations. Four male and three female, 4-year-old, intact, lean, genetically related, Chinese-crested/beagle dogs were studied in a randomised, single cross-over trial. After feeding a low-vitamin D diet (<4 IU/100 g) for 30 d, four dogs received daily D3 supplementation at 2·3 µg/kg body weight0·75, while three dogs received a molar equivalency as 25(OH)D3. The supplements, dissolved in ethanol, were applied to a commercial treat for consumption. Serum 25(OH)D3 and 24R,25-dihydroxyvitamin D3 (24R,25(OH)2D3) were analysed weekly using a validated HPLC method. Both supplementations increased (P ≤ 0·01) serum 25(OH)D3 concentrations. However, oral 25(OH)D3 resulted in greater (P < 0·0001) concentrations than D3 by week 1, with a difference of 173 % (P < 0·0001) by week 2. The supplementation period was limited to 14 d after serum 25(OH)D3 concentrations were not appearing to plateau. Thereafter, a washout period of 1 month separated the cross-over. Following 25(OH)D3, but not D3 supplementation, serum 24R,25(OH)2D3 concentrations increased (P ≤ 0·02), 3 to 5 weeks after initiating supplementation. Vitamin D status, as indicated by serum 25(OH)D3 and 24R,25(OH)2D3 concentrations, is more rapidly and efficiently increased in adult dogs by oral supplementation of 25(OH)D3 than D3. |
| first_indexed | 2024-04-10T04:42:48Z |
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| issn | 2048-6790 |
| language | English |
| last_indexed | 2024-04-10T04:42:48Z |
| publishDate | 2017-01-01 |
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| series | Journal of Nutritional Science |
| spelling | doaj.art-546985251d9f43018429fb418ac0e47f2023-03-09T12:38:57ZengCambridge University PressJournal of Nutritional Science2048-67902017-01-01610.1017/jns.2017.8Serum 25-hydroxyvitamin D3 and 24R,25-dihydroxyvitamin D3 concentrations in adult dogs are more substantially increased by oral supplementation of 25-hydroxyvitamin D3 than by vitamin D3Lauren R. Young0Robert C. Backus1Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USADepartment of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USAWe previously found a weak response in serum 25-hydroxyvitamin D3 (25(OH)D3) concentrations when dogs were supplemented with oral vitamin D3 (D3). In the present study, we determined the relative potency of oral 25(OH)D3 compared with D3 for increasing vitamin D status in dogs with low serum 25(OH)D concentrations. Four male and three female, 4-year-old, intact, lean, genetically related, Chinese-crested/beagle dogs were studied in a randomised, single cross-over trial. After feeding a low-vitamin D diet (<4 IU/100 g) for 30 d, four dogs received daily D3 supplementation at 2·3 µg/kg body weight0·75, while three dogs received a molar equivalency as 25(OH)D3. The supplements, dissolved in ethanol, were applied to a commercial treat for consumption. Serum 25(OH)D3 and 24R,25-dihydroxyvitamin D3 (24R,25(OH)2D3) were analysed weekly using a validated HPLC method. Both supplementations increased (P ≤ 0·01) serum 25(OH)D3 concentrations. However, oral 25(OH)D3 resulted in greater (P < 0·0001) concentrations than D3 by week 1, with a difference of 173 % (P < 0·0001) by week 2. The supplementation period was limited to 14 d after serum 25(OH)D3 concentrations were not appearing to plateau. Thereafter, a washout period of 1 month separated the cross-over. Following 25(OH)D3, but not D3 supplementation, serum 24R,25(OH)2D3 concentrations increased (P ≤ 0·02), 3 to 5 weeks after initiating supplementation. Vitamin D status, as indicated by serum 25(OH)D3 and 24R,25(OH)2D3 concentrations, is more rapidly and efficiently increased in adult dogs by oral supplementation of 25(OH)D3 than D3.https://www.cambridge.org/core/product/identifier/S2048679017000088/type/journal_articleCholecalciferol25-Hydroxycholecalciferol24R,25-dihydroxycholecalciferolSupplementation in dogs |
| spellingShingle | Lauren R. Young Robert C. Backus Serum 25-hydroxyvitamin D3 and 24R,25-dihydroxyvitamin D3 concentrations in adult dogs are more substantially increased by oral supplementation of 25-hydroxyvitamin D3 than by vitamin D3 Journal of Nutritional Science Cholecalciferol 25-Hydroxycholecalciferol 24R,25-dihydroxycholecalciferol Supplementation in dogs |
| title | Serum 25-hydroxyvitamin D3 and 24R,25-dihydroxyvitamin D3 concentrations in adult dogs are more substantially increased by oral supplementation of 25-hydroxyvitamin D3 than by vitamin D3 |
| title_full | Serum 25-hydroxyvitamin D3 and 24R,25-dihydroxyvitamin D3 concentrations in adult dogs are more substantially increased by oral supplementation of 25-hydroxyvitamin D3 than by vitamin D3 |
| title_fullStr | Serum 25-hydroxyvitamin D3 and 24R,25-dihydroxyvitamin D3 concentrations in adult dogs are more substantially increased by oral supplementation of 25-hydroxyvitamin D3 than by vitamin D3 |
| title_full_unstemmed | Serum 25-hydroxyvitamin D3 and 24R,25-dihydroxyvitamin D3 concentrations in adult dogs are more substantially increased by oral supplementation of 25-hydroxyvitamin D3 than by vitamin D3 |
| title_short | Serum 25-hydroxyvitamin D3 and 24R,25-dihydroxyvitamin D3 concentrations in adult dogs are more substantially increased by oral supplementation of 25-hydroxyvitamin D3 than by vitamin D3 |
| title_sort | serum 25 hydroxyvitamin d3 and 24r 25 dihydroxyvitamin d3 concentrations in adult dogs are more substantially increased by oral supplementation of 25 hydroxyvitamin d3 than by vitamin d3 |
| topic | Cholecalciferol 25-Hydroxycholecalciferol 24R,25-dihydroxycholecalciferol Supplementation in dogs |
| url | https://www.cambridge.org/core/product/identifier/S2048679017000088/type/journal_article |
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