Tryptophan requirement of juvenile Asian sea bass Lates calcarifer
Share
စိတ္တဇ
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.
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
ဘာသာရပ်
Taxonomic term
စုစည်းမှုများ စုစည်းမှုများ
- AQD Journal Articles [1215]
Related items
Showing items related by title, author, creator and subject.
-
Seabass grow-out and marketing: lessons from Australia, Malaysia, and Thailand
Buendia, Romeo (Aquaculture Department, Southeast Asian Fisheries Development Center, 1997) -
Optimized feeding strategies in the larviculture of the Asian seabass Lates calcarifer.
Dhert, Philippe.; Duray, Marietta; Lavens, Patrick.; Sorgeloos, Patrick. (Asian Fisheries Society, 1990)This paper reports on the progress made at the Tigbauan hatchery of SEAFDEC in the Philippines, with the larviculture of the Asian seabass Lates calcarifer when using w3-HUFA enriched Brachionus and Artemia . In view of ... -
Illuminated-cage nursery of the Asian sea bass, Lates calcarifer Bloch, (Centropomidae): effects of initial body size and stocking density
Fermin, Armando C. (Asian Fisheries Society; World Aquaculture Society - Southeast Asian Chapter, 2000)This study was conducted to determine the appropriate initial body size and the corresponding stocking density of sea bass, Lates calcarifer, during nursery rearing in illuminated cages. Hatchery-produced sea bass fry of ...