Compensatory growth of juvenile olive flounder, Paralichthys olivaceus L., and changes in proximate composition and body condition indexes during fasting and after refeeding in summer season SCIE SCOPUS

Cited 41 time in WEB OF SCIENCE Cited 47 time in Scopus
Title
Compensatory growth of juvenile olive flounder, Paralichthys olivaceus L., and changes in proximate composition and body condition indexes during fasting and after refeeding in summer season
Author(s)
Cho, SH; Lee, SM; Park, BH; Ji, SC; Lee, J; Bae, J; Oh, SY
KIOST Author(s)
Oh, Sung Yong(오승용)
Publication Year
2006
Abstract
Compensatory growth of juvenile olive flounder, Paralichthys olivaceus L., and changes in proximate composition and body condition indexes of fish during fasting and after refeeding were investigated during the summer season. Groups of 25 fish each (initial body weight of 16 g) were randomly distributed into fifteen 180-L flow-through tanks. Fish were fed the experimental diet containing crude protein 46.9% and crude lipid 8.0% with estimated energy level of 14.6 kJ/g diet for 6 d/wk. Five treatments in triplicate were prepared for this study: C, S1, S2, S3, and S4. Fish in the control group (C) were hand-fed to apparent satiation twice daily. Fish in treatments S1, S2, S3, and S4 experienced 1, 2, 3, and 4 wk of starvation and were then hand-fed to apparent satiation twice daily during the remaining 7, 6, 5, and 4 wk of the experiment, respectively. A group of starved fish in the similar size was stocked and fasted throughout the 8-wk feeding trial for chemical and blood analysis. The feeding trial lasted for 8 wk. Weight of fish linearly decreased with week of starvation (P < 0.0001). Linear relationship between condition factor (CF) and hepatosomatic index (HSI) against week of starvation was observed in the starved group of fish. Survival was not significantly (P > 0.05) affected by feeding strategy. However, weight gain and specific growth rate (SGR) of olive flounder in C, S1, and S2 were significantly (P < 0.05) higher than those of fish in S3 and S4. The poorest weight gain and specific growth rate (SGR) were obtained in fish of S4. Feed consumption of olive flounder in C, SI, and S2 was significantly (P < 0.05) higher than that of fish in S3 and S4. Feed < efficiency, protein efficiency ratio, and protein retention of olive flounder in C and S1 were not significantly (P > 0.05) different from those of fish in S2 but significantly (P < 0.05) higher than those of fish in S3 and S4. Hematocrit, CF, and HSI of olive flounder were not significantly (P > 0.05) affected by feeding strategy. Chemical composition of fish was not significantly (P > 0.05) affected by feeding strategy. In considering these results, it can be concluded that juvenile olive flounder have the ability to fully compensate for 2-wk feed deprivation during the summer season. Besides, feed efficiency in fish fed for 7 and 6 wk after 1- and 2-wk feed deprivation was comparable to that in fish fed for 8 wk.
ISSN
0893-8849
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4973
DOI
10.1111/j.1749-7345.2006.00023.x
Bibliographic Citation
JOURNAL OF THE WORLD AQUACULTURE SOCIETY, v.37, no.2, pp.168 - 174, 2006
Publisher
BLACKWELL PUBLISHING
Subject
CATFISH ICTALURUS-PUNCTATUS; BARRAMUNDI LATES-CALCARIFER; FEED DEPRIVATION; JAPANESE FLOUNDER; DIETARY-PROTEIN; GIBEL CARP; FOOD-CONSUMPTION; RAINBOW-TROUT; RATION LEVEL; STARVATION
Type
Article
Language
English
Document Type
Article
Publisher
BLACKWELL PUBLISHING
Related Researcher
Research Interests

Fish aquaculture,Aquacultural engineering,Environmental physiology,어류 양식,양식 공학,환경생리학

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