Utilization of dietary starch by juvenile white sea bream Diplodus sargus at different feeding frequencies

• Type: Article in International Scientific Journal
• Date: 2015

Authors

Enes, P (Author) Other; Garcia Meilan, I (Author) Other; Guerreiro, I (Author) Other; Couto, A (Author) Other; Pousao Ferreira, P (Author) Other; Gallardo, MA (Author) Other; Oliva Teles, A (Author) FCUP

Journal

Title: Aquaculture Nutrition

Vol. 21

Pages: 926-934

ISSN: 1353-5773

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 17 Citations

Scopus - 17 Citations

Scientific classification

FOS: Agrarian Sciences > Agriculture, Forestry, and Fisheries

Other information

Authenticus ID: P-00G-2BM

DOI: 10.1111/anu.12227

Abstract (EN): To assess the effect of feeding frequency on the utilization of dietary starch by white sea bream juveniles, triplicate groups of fish were fed an experimental diet (400 g kg(-1) protein, 140 g kg(-1) lipids and 350 g kg(-1) pregelatinized maize starch) to apparent visual satiation 2, 3 or 4 times a day for 63 days. Growth performance, feed utilization efficiency, glycaemia, cholesterolaemia, plasma triacylglycerides, liver lipids and glycogen content were unaffected by feeding frequency. alpha-Amylase activity increased from the pyloric caeca to the posterior intestine and was higher in fish fed twice a day than in fish fed 3 or 4 times a day. Hepatic glucokinase (GK) activity decreased with the increase in feeding frequencies, whereas fructose-1,6-bisphosphatase (FBPase) activity increased. Hepatic glucose-6-phosphate dehydrogenase and glutamate dehydrogenase activities were unaffected by feeding frequency. Overall, feeding frequency did not improve white sea bream dietary starch utilization. alpha-Amylase, GK and FBPase activities responded to dietary starch consumed at each meal, denoting a good metabolic adaptation of the fish to the feeding conditions.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9