Apparent digestibility of eelgrass Zostera marina by captive dugongs Dugong dugon in relation to the nutritional content of eelgrass and dugong feeding parameters
Apparent digestibility of eelgrass Zostera marina by captive dugongs Dugong dugon in relation to the nutritional content of eelgrass and dugong feeding parameters
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圈养儒艮对鳗草大叶藻的表观消化率与鳗草营养成分和儒艮饲养参数的关系
DOI：
10.3106/mammalstudy.28.23
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发表时间：
2003
期刊：
影响因子：
1
通讯作者：
A. Kawamura
中科院分区：
文献类型：
--
作者：
Kan Aketa;Shiro Asano;Yoshihito Wakai;A. Kawamura
研究了人工饲养儒艮对鳗草干重和能量的消化率与鳗草营养成分和儒艮摄食参数的关系。消化率是根据圈养儒艮的食物保留时间为144-168小时计算的。鳗草的消化率受其木质素含量的影响很大，其表观消化率与木质素含量呈负相关。由于海草（包括鳗草）中的纤维含量高于哺乳动物食草动物通常食用的陆生植物，因此本研究中圈养儒艮的表观消化率报告表明鳗草可能具有非常高的消化率。
The present study examined the digestibility of eelgrass based on dry weight and energy by captive dugongs Dugong dugon in relation to the nutritional content of the eelgrass and the feeding parameters of the dugongs. Digestibility was calculated on the basis that food retention by captive dugongs is 144-168 hours. Digestibility of eelgrass was strongly affected by the lignin content of the eelgrass species concerned, with a negative correlation between the apparent digestibility of a species and its lignin content. Since fiber contents are higher in seagrasses, including eelgrasses, than in terrestrial plants on which mammalian herbivores typically feed, the apparent digestibility reported from captive dugongs in the present study indicate that eelgrass may have an extraordinarily high digestibility.