Publication
Title
Metabolic fitness and growth performance in tropical freshwater fish Labeo rohita are modulated in response to dietary starch type (gelatinized versus non-gelatinized) and water temperature
Author
Abstract
This study investigated the modulating effect of temperature variation on the metabolic status and growth performance of tropical freshwater fish, Labeo rohita, when reared with starch-based gelatinized (G) or non-gelatinized (NG) diet. Fish were either maintained at ambient water temperature (26 degrees C) or exposed to 32 degrees C for 1 week, and then subjected to 26 degrees C for 4 weeks. Both groups were fed with isoproteinous (300 g kg(-1)) diets containing G or NG starch. A significant interaction was evident between increased metabolic activity due to the short-term exposure to higher temperature and starch type on growth performance, feed efficiency and protein retention. Dietary starch type and water temperature interactions were more effective in modulating the hepatic glucokinase and pyruvate kinase responses than that of hexokinase. Hepatic aspartate amino transferase and alanine amino transferase activities were augmented at low temperature in NG starch fed group. Overall, our findings indicate that enzyme activities are enhanced due to the short-term exposure to higher temperature (32 degrees C). This elevated temperature lasted for 3 weeks after exposure during which NG starch tended to support the growth.
Language
English
Source (journal)
Aquaculture nutrition. - Oxford
Publication
Oxford : 2016
ISSN
1353-5773
DOI
10.1111/ANU.12327
Volume/pages
22 :5 (2016) , p. 966-975
ISI
000383350500003
Full text (Publisher's DOI)
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identifier
Creation 21.11.2016
Last edited 09.10.2023
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