Sulphur amino acid requirement of juvenile Asian sea bass Lates calcarifer

View/ Open
Request this document
Date
1999Page views
52Metadata
Show full item recordCited times in Scopus
Share
Abstract
The dietary requirement of juvenile Asian sea bass Lates calcarifer for total sulphur amino acids was studied. Fish (average initial weight of 2.59 plus or minus 0.08 g) were reared in twelve 500 L fibreglass tanks provided with flow-through seawater at 26 degree C and salinity of 31 ppt for 12 weeks. They were fed semipurified test diets containing 6.2, 7.2, 8.1, 9.0, 10.8, or 12.6 g methionine/kg dry diet and a basal level of 3.1 g cystine/kg dry diet. The mean crude protein of the diets (containing defatted Peruvian fishmeal, squid meal, soybean meal, and free amino acid mixture to simulate the pattern of hydrolysed sea bass protein) was 46.02 %. The crude fat content of the diets was 10.51 % from a 1:1 mixture of cod liver oil and soybean oil. Survival was 100 % in all treatments. On the basis of the growth response, the total sulphur amino acid requirement of juvenile Asian sea bass was estimated to be 13.4 g/kg dry diet (2.9 % of protein). Fish fed low levels of L-methionine had significantly lower weight gains and feed efficiency ratios as well as slightly higher hepatosomatic indices. No nutritional deficiency signs were observed other than growth depression in fish fed on diets that were low in methionine. This information is valuable in further refinement of formulations of practical diets for the Asian sea bass.
Suggested Citation
Coloso, R. M., Murillo-Gurrea, D. P., Borlongan, I. G., & Catacutan, M. R. (1999). Sulphur amino acid requirement of juvenile Asian sea bass Lates calcarifer.Subject
Taxonomic term
Collections
- AQD Journal Articles [1162]
Related items
Showing items related by title, author, creator and subject.
-
An incidence of swimbladder stress syndrome in hatchery-reared sea bass (Lates calcarifer) larvae
Bagarinao, Teodora; Kungvankij, Pinij (Elsevier, 1986)This paper describes an incidence of swimbladder malfunction causing high positive buoyancy and mass mortality in 2-week-old sea bass (Lates calcarifer) larvae reared in an outdoor hatchery tank under conditions of high ... -
The ultrastructure of the hepatocytes of the giant seaperch, Lates calcarifer (Bloch) (Pisces: Centropomidae), during starvation and refeeding with different diets.
Avila, Enrique M. (The Marine Biological Association of Hongkong, 1986)Three groups of immature seaperch acclimated in the laboratory on a mixed commercial pellet and minced trashfish diet were starved for 30 days. Thereafter, the first group was starved for 7 more days, the second was refed ... -
Improved larval survival at metamorphosis of Asian seabass (Lates calcarifer) using ω3-HUFA-enriched live food
Dhert, Philippe; Lavens, Patrick; Duray, Marietta; Sorgeloos, Patrick (Elsevier, 1990)Asian seabass (Lates calcarifer) larvae were fed Brachionus cultured on Chlorella and, as soon as ingestin was possible, different types of Artemia, i.e., nauplii of the San Francisco Bay (SFB) strain, Great Salt Lake (GSL) ...