Effects of age, body size and season on food consumption and digestion of captive dugongs (Dugong dugon)

Autor:	Masami Furuta, Keiko Wakamura, Mohammed Sani Yahaya, Yukari Oka, Shiro Asano, Yoshihito Wakai, Chisato Ito, Masakazu Goto, Teruo Kataoka
Rok vydání:	2004
Předmět:	Dugong Physiology Food consumption Aquatic Science Biology Body size Oceanography biology.organism_classification Body weight Fishery Animal science medicine Zostera marina Dry matter medicine.symptom Digestion Weight gain
Zdroj:	Marine and Freshwater Behaviour and Physiology. 37:89-97
ISSN:	1029-0362 1023-6244
Popis:	Food consumption and digestion of male and female dugongs (Dugong dugon) was examined by analyzing long-term (1979–1998) feeding records at Toba Aquarium (Japan). Throughout all captive feeding periods, dugongs consumed eelgrass (Zostera marina) and showed steady increases in feed consumption with a consistent weight gain of 42–45 kg a year. The daily consumption of male and female dugongs increased from 10–15 kg to 23–26 kg of fresh eelgrass, accounting for approximately 14 and 7% of their body weight at one and seven years old, respectively. Both dugongs had a marginal dry matter digestibility of over 90%. Food consumption varied between seasons and individuals. There were major reductions (P
Databáze:	OpenAIRE
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