National Animal Disease Center, Ames, Iowa 50010, USA.
Int J Vitam Nutr Res. 2009 May;79(3):180-7. doi: 10.1024/0300-9831.79.3.180.
Serum concentrations of 25-hydroxyvitamin D [25(OH)D] were determined for free-ranging and captive white-tailed deer (WTD). Effects of gender, season, and age on 25(OH)D concentrations were determined as well as comparisons to concentrations in serum from captive reindeer and elk. Seasonal variations in 25(OH)D concentrations were detected for both captive and free-ranging WTD with greatest concentrations detected in August/September (approximately 25 ng/mL) and lowest concentrations in February (approximately 5 - 10 ng/mL). Free-ranging WTD < 1 year of age had lower 25(OH)D concentrations (approximately 6 ng/mL) than did free-ranging WTD > 1 year of age (approximately12 ng/mL). For captive WTD fawns, 25(OH)D concentrations increased from 1 to 9 days of age (exceeding 100 ng/mL) and then steadily declined to approximately 10 ng/mL by 3 months of age. In general, differences in 25(OH)D concentrations based on gender were not detected. 25(OH)D concentrations in captive WTD did not differ from that of captive reindeer; yet, 25(OH)D concentrations were lower in WTD than in captive elk. Additional research is necessary to determine if low serum 25(OH)D concentrations during the winter or pre-weaning period are associated with increased rates of infectious and metabolic disease.
测定了自由放养和圈养白尾鹿（WTD）的血清 25-羟维生素 D [25（OH）D]浓度。还确定了性别、季节和年龄对 25（OH）D 浓度的影响，并与圈养驯鹿和麋鹿血清中的浓度进行了比较。在圈养和自由放养的 WTD 中均检测到 25（OH）D 浓度的季节性变化，8 月/9 月（约 25ng/mL）浓度最高，2 月（约 5-10ng/mL）浓度最低。1 岁以下的自由放养 WTD 的 25（OH）D 浓度（约 6ng/mL）低于 1 岁以上的自由放养 WTD（约 12ng/mL）。对于圈养 WTD 的幼鹿，25（OH）D 浓度从 1 到 9 天龄（超过 100ng/mL）增加，然后在 3 个月龄时稳定下降至约 10ng/mL。一般来说，性别差异对 25（OH）D 浓度没有影响。圈养 WTD 的 25（OH）D 浓度与圈养驯鹿的浓度没有差异；然而，WTD 的 25（OH）D 浓度低于圈养麋鹿。需要进一步研究以确定冬季或哺乳期前血清 25（OH）D 浓度低是否与传染性和代谢性疾病的发生率增加有关。
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