期刊
AQUACULTURE
卷 432, 期 -, 页码 273-277出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aquaculture.2014.05.021
关键词
Red sea bream; Selenium; Larval growth; Rotifer; Chlorella vulgaris
资金
- Ministry of Education, Science, Sports and Culture [24380108]
Feeding trials were conducted to investigate the effect of selenium (Se)-enriched rotifers on growth and development of red sea bream Pagrus major larvae. Fish were reared from fertilized eggs (98% hatch rate) to 20 days post hatch (dph) at 19 degrees C with two different food sources; non-enriched S-type rotifers (0.0 mu g Se/g D.W., control diet) or Se-enriched rotifers (2.2 mu g Se/g D.W., Se-enriched diet) at 10 rotifers/mL, respectively. On the last day of larviculture, the Se-enriched diet accelerated growth and developmental stage of fish larvae. The larvae fed Seenriched rotifers were advanced in the following parameters compared to those fed control diet: total length (6.06 vs 5.53 mm), standard length (5.74 vs 5.26 mm), head length (1.46 vs 1.28 mm), eye diameter (0.57 vs 0.50 mm), the number of caudal fin rays (5.8 vs 1.9), and the proportion of individuals undergoing notochord flexion (55 vs 3%). Fish larvae of 20 dph showed higher Se concentration (9.5 +/- 0.2 mu g/g DW) with the Seenriched diet than with the control diet (1.3 +/- 0.3 mu g/g DW), but there were no significant differences in the composition of polyunsaturated fatty acids which significantly affect larval growth and development. Therefore, the feeding of Se enriched rotifers enhanced growth and development of the red sea bream P. major larvae. (C) 2014 Elsevier B.V. All rights reserved.
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