Effect of dietary taurine levels on growth and feeding behavior of juvenile Japanese flounder Paralichthys olivaceus

This study was conducted to investigate the effect of dietary taurine levels on growth and feeding behavior of juvenile Japanese flounder. Three different taurine level diets were prepared by supplementation of taurine (T-0%, 0.5% and 1.5%) to the basal diet. Fish meal washed with 70% ethanol to rem...

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Bibliographic Details
Published in:Aquaculture 2005-12, Vol.250 (3), p.765-774
Main Authors: Kim, Shin-Kwon, Takeuchi, Toshio, Yokoyama, Masahito, Murata, Yuko, Kaneniwa, Masaki, Sakakura, Yoshitaka
Format: Article
Language:English
Subjects:
Agnatha. Pisces
Animal aquaculture
Animal behavior
animal growth
Animal productions
Aquaculture
Biological and medical sciences
cystathionine
Diet
feed composition
feed supplements
Feeding behavior
feeding frequency
Fish
fish culture
fish feeding
flounder
free amino acids
Fundamental and applied biological sciences. Psychology
General aspects
Growth
Japanese flounder
Juvenile
mariculture
Marine
marine fish
Paralichthys olivaceus
Physical growth
Taurine
tissue distribution
Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
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Summary:This study was conducted to investigate the effect of dietary taurine levels on growth and feeding behavior of juvenile Japanese flounder. Three different taurine level diets were prepared by supplementation of taurine (T-0%, 0.5% and 1.5%) to the basal diet. Fish meal washed with 70% ethanol to remove taurine was used as the sole protein source. Feeding experiments were carried out twice at 20 °C by using different size of fish (average body weight: 0.3 g in Experiment I and 3.7 g in Experiment II). The feeding behavior of fish was observed throughout the experimental period. At the end of experiments, fish were killed for amino acids analysis. The final average body weight and feed efficiency of juvenile Japanese flounder fed the T-1.5% diet was significantly higher than those of fish fed the T-0% diet in Experiments I and II. Abnormal feeding behavior such as multiple feeding while swimming in the water column was observed in the T-0% group in Experiment I. These findings indicate that taurine is essential for normal growth and development of normal feeding behavior of juvenile Japanese flounder.
ISSN:0044-8486
1873-5622
DOI:10.1016/j.aquaculture.2005.04.073