Effect of rotifers enriched
with taurine on growth and survival activity of red sea bream Pagrus
major larvae
J.-N.
Chen, T. Takeuchi, T. Takahashi, T. Tomoda, M. Koiso, H. Kuwada-2004
Nippon Suisan Gakkaishi, 70(4): 542-547
Abstract:
This study was conducted to investigate the effect of
rotifers enriched with taurine on the growth performance and survival of
larval red sea bream Pagrus major. Larvae at 2 days post-hatching
(dph; total length 2.33±0.05 mm) were divided into two groups and fed on
rotifers enriched with or without 400 (mg/L) taurine for 17 h. There was no
significant difference in activity of rotifers and their fatty acid profiles
in rotifers irrespective of enrichment with or without taurine. The taurine
content in rotifers significantly increased with increase of time of
enrichment, and the final content of taurine was significantly higher than
that in rotifers enriched without taurine. Similarly, the taurine content in
larvae at 20 dph fed rotifers enriched with taurine (252 mg/100 g) was
significantly higher than that in fish fed rotifers enriched without taurine
(37 mg/100 g). Larval growth was significantly improved in fish fed rotifers
enriched with taurine. In addition, the survival activity index of the
larvae was superior to that of fish fed rotifers enriched without taurine.
These results indicate that taurine enrichment of rotifers is effective to
improve growth and survival activity in red sea bream larvae.
(Faculty of Marine Science, Tokyo University of
Marine Science and Technology, Minato, Tokyo 108-8477, Japan)