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

• Tipo: Artigo em Revista Científica Internacional
• Data: 2015

Autores

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

Revista

Título: Aquaculture Nutrition

Vol. 21

Páginas: 926-934

ISSN: 1353-5773

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 17 Citações

Scopus - 17 Citações

Classificação Científica

FOS: Ciências agrárias > Agricultura, silvicultura e pescas

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9