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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
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Your Position :Home->Past Journals Catalog->2011 Vol.30 No.4

The Chemical Composition and Energy Density in Cirrhina molitorella with Different Age in the Lower Reaches of Hanjiang River
Author of the article:LIN Xiao-zhi1, LIN Hong-sheng1, LI Dong-mei1, LUO Yi-ping2, ZHA Guang-cai1
Author's Workplace:(1. Hanshan Normal University, Chaozhou, Guangdong Province 521041, China; 2. School of Life Science, Southwest University, Key Laboratory of Aquatic Organism Reproduction and Development, Ministry of Education, Chongqing 400715, China)
Key Words:Cirrhina molitorella; age; chemical composition; water content; energy density
Abstract:To observe the variation of chemical composition of Cirrhina molitorella, 22 specimenswith a body length (L) of 102~201 mm, body weight (W) of 24.19~228.17 g and age from 0~3 year were collected from the lower reaches of Hanjiang River in June, 2010, and divided into 4 groups according to the age. Chemical compositions are measured and energy density is estimated. The results showed that the contents of water (WAT), protein (PRO), lipid (FAT) and ash (represented by percentage of them in fresh body weight of fish, respectively) ranged 72.79%~75.54%, 12.99%~17.06%, 8.18%~12.88%, and 2.35%~3.38%, respectively. The energy density (E) ranged 5.03~7.36 kJ/g. With the increase of age, body PRO, FAT and Eincreased, while WAT decreased. The content of ash varies erratically. PRO, FAT and Eare all positively correlated with age, while WAT is negatively correlated with L. The contents of PRO, FAT and E are all negatively correlated with the content of WAT. The results suggest that the contents of PRO, FAT and E of C. molitorella can be estimated by the content of water or body length.
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