Energy intake and fur in summer- and winter-acclimated Siberian hamsters (Phodopus sungorus)
Energy intake and fur in summer- and winter-acclimated Siberian hamsters (Phodopus sungorus)
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DOI：
10.1152/ajpregu.2001.281.2.r519
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发表时间：
2001-08-01
影响因子：
2.8
通讯作者：
Zucker, I
中科院分区：
文献类型：
--
作者：
Kauffman, AS;Cabrera, A;Zucker, I
很少有研究直接探讨皮毛对能量摄入季节性变化的影响。在模拟夏季和冬季条件下，测量了西伯利亚仓鼠（Phodopus sungorus）的每日食物摄入量，包括完整的动物和去除不同量皮毛的动物。完全剃须后约 2-3 周内，能量摄入量比基线控制值增加高达 44%。食物摄入量的增加因条件而异，并且在短日照条件下饲养的仓鼠比在长日照条件下饲养的仓鼠的食物摄入量增加更多，在低温（5℃）环境温度下饲养的仓鼠比在中等环境温度（23℃）条件下饲养的仓鼠的食物摄入量增加更多。去除8厘米（2）的背毛（相当于背毛总表面的30％）会增加食物摄入量，但去除4厘米（2）则没有效果。从腹面拔除 8 厘米（2）的毛皮不会增加食物消耗。从上面的棕色脂肪组织热点去除毛皮对食物摄入没有不同的影响。与适应夏季的仓鼠相比，毛皮在冬季的能量平衡中发挥着更大的作用，并且在各种环境条件下都可以节省能量。
Few studies have directly addressed the impact of fur on seasonal changes in energy intake. The daily food intake of Siberian hamsters (Phodopus sungorus) was measured under simulated summer and winter conditions in intact animals and those with varying amounts of pelage removed. Energy intake increased up to 44% above baseline control values for approximately 2-3 wk after complete shaving. Increases in food intake varied with condition and were greater in hamsters housed in short than long day lengths and at low (5 degrees C) than moderate (23 degrees C) ambient temperatures. Removal of 8 cm(2) of dorsal fur, equivalent to 30% of the total dorsal fur surface, increased food intake, but removal of 4 cm(2) had no effect. An 8-cm(2) fur extirpation from the ventral surface did not increase food consumption. Food intake was not influenced differentially by fur removal from above brown adipose tissue hot spots. Fur plays a greater role in energy balance in winter- than summer-acclimated hamsters and conserves energy under a wide range of environmental conditions.