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Tryptophan requirement of juvenile Asian sea bass Lates calcarifer

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Date
2004
Author
Coloso, R. M.
Murillo-Gurrea, D. P.
Borlongan, I. G.
Catacutan, M. R.
Page views
9,604
Subject
amino acids ASFA
diet ASFA
feeding experiments ASFA
growth ASFA
juveniles ASFA
lipids ASFA
nutritional requirements ASFA
proteins ASFA
salinity data ASFA
water temperature ASFA
sea bass AGROVOC
Lates calcarifer AGROVOC
Philippines AGROVOC
Tigbauan TGN
Taxonomic term
Lates calcarifer GBIF
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Abstract
The dietary requirement of tryptophan for juvenile Asian sea bass (Lates calcarifer Bloch) was studied. The juveniles (mean initial weight, 5.30 ± 0.06 g) were given semi-purified test diets containing fish meal, gelatin, squid meal, and crystalline amino acids, for 12 weeks. Each set of isonitrogenous and isocaloric test diets contained graded levels of tryptophan. Fish (15 per tank) were reared in 250-L fiberglass tanks provided with continuous flow-through sea water at 26°C and salinity of 28 p.p.t. Fish were fed twice daily at a feeding rate of 8% of the body weight day−1 for the first 4 weeks and at 3.5–2.5% of the body weight day−1 from 5 to 12 weeks. The experiment was in a completely randomized design with two replicates per treatment. Mean percentage weight gains and feed efficiency ratios were significantly different in fish fed varying tryptophan levels. Survival was 100% in all treatments. On the basis of break-point analysis of the growth response, the dietary tryptophan requirement of juvenile Asian sea bass is 0.41% of the dietary protein. This information will be useful in further refinement of practical feed formulations for the Asian sea bass.
URI
http://hdl.handle.net/10862/2009
Suggested Citation
Coloso, R. M., Murillo-Gurrea, D. P., Borlongan, I. G., & Catacutan, M. R. (2004). Tryptophan requirement of juvenile Asian sea bass Lates calcarifer. Journal of Applied Ichthyology, 20(1), 43-47. https://doi.org/10.1111/j.1439-0426.2004.00478.x 
DOI
10.1111/j.1439-0426.2004.00478.x
Type
Article
ISSN
0175-8659; 1439-0426
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  • Journal Articles [1155]

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