Proteolytic enzyme activity of juvenile Asian sea bass, Lates calcarifer (Bloch), is increased with protein intake

View/ Open
Request this document
Date
2002Page views
131Metadata
Show full item recordCited times in Scopus
Share
Abstract
The effect of high dietary protein intake on proteolytic enzyme activity of feeding juvenile Asian sea bass, Lates calcarifer (Bloch) was studied. Ninety fish [mean body weight ± standard error (SE) 304.62 ± 34.84 g] were randomly assigned to two dietary treatments, each with three replicates. In treatment 1, fish were fed by-catch (Thunnus albacares) and in treatment 2, a formulated diet containing 50% protein. Proteolytic enzyme activity was determined in pyloric caecae and intestine at day 0, 7, 15, and 30. Initial proteolytic enzyme activity in sea bass ranged from 174 to 232 azocasein units (UAC.) per mg of protein. After 7 days there was no significant difference in proteolytic enzyme activity of fish fed the two diets. However, a marked increase was observed in fish fed the formulated diet at day 15. After 30 days, the proteolytic enzyme activity in fish fed the formulated diet was threefold higher than that in fish fed the by-catch diet. Fish fed the formulated diet had significantly higher total protein intake at day 7 than did fish fed by-catch. Thereafter, a twofold weekly increase in the total protein intake was observed in both fish fed the by-catch and formulated diets until day 30. These results suggest that a high dietary protein intake induces increased proteolytic enzyme activity in Asian sea bass.
Suggested Citation
Eusebio, P. S., & Coloso, R. M. (2002). Proteolytic enzyme activity of juvenile Asian sea bass, Lates calcarifer (Bloch), is increased with protein intake. Aquaculture Research , 33(8), 569-574. https://doi.org/10.1046/j.1365-2109.2002.00682.x
Subject
Taxonomic term
Collections
- AQD Journal Articles [1196]
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 ...