The selection by the Asiatic black bear (Ursus thibetanus) of spring plant food items according to their nutritional values.

The selection by the Asiatic black bear (Ursus thibetanus) of spring plant food items according to their nutritional values.
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亚洲黑熊(Ursus thibetanus)根据营养价值选择春季植物性食物。

DOI:
10.3897/zookeys.672.10078
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发表时间:
2017
期刊:
影响因子:
1.3
通讯作者:
Koike S
Koike S
中科院分区:
生物学3区
文献类型:
--
作者:
Furusaka S;Kozakai C;Nemoto Y;Umemura Y;Naganuma T;Yamazaki K;Koike S

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本研究旨在定量研究熊的饮食营养方面,以了解春季植物性食物的选择。2013年和2014年,从4月到7月直接观察熊,以视觉识别熊食用的植物物种,并描述日本中部芦尾日光山脉的觅食时期。从8个优势树种的树叶,无论熊在春季是否喂养他们,他们的关键营养成分分析:粗蛋白(CP),中性洗涤纤维(NDF),和总能量。熊倾向于消费特定物种的新鲜叶在5月,营养分析表明,这些叶有较高的CP和较低的NDF比其他非食物叶。从5月到7月,熊的食物偏好从植物性食物转变为蚂蚁性食物时,被消费的树叶中的CP逐渐减少,NDF逐渐增加。熊在冬眠后可能会消耗高CP和低NDF的树叶来重建肌肉质量。
The present study aimed to investigate the nutritional aspects of the bear diet quantitatively, in order to understand plant food selection in spring. Bears were observed directly from April to July in 2013 and 2014, to visually recognize plant species consumed by bears, and to describe the foraging period in the Ashio-Nikko Mountains, central Japan. Leaves were collected from eight dominant tree species, regardless of whether bears fed on them in spring, and their key nutritional components analyzed: crude protein (CP), neutral detergent fiber (NDF), and total energy. Bears tended to consume fresh leaves of specific species in May, and nutritional analysis revealed that these leaves had higher CP and lower NDF than other non-food leaves. However, CP in consumed leaves gradually decreased, and NDF increased from May to July, when the bears’ food item preference changed from plant materials to ants. Bears may consume tree leaves with high CP and low NDF after hibernation to rebuild muscle mass.
DOI: 10.1093/jmammal/gyv032
发表时间: 2015-04-01
影响因子: 1.7
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