Abstract

The aim of the present study was to evaluate the effects of three formulated diets: wheat gluten protein-based diets supplemented with LysGly dipeptide (PP) or free lisine and glycine (AA), and a control diet without lysine supplementation (CON), two commercial starters: Aller Futura (AF), Aglo Norse (AN) and frozen Chironomidae larvae (CH) for on the growth and digestive system development of rainbow trout. The experiment lasted 28 days and survival at the end of the experiment was the highest in the group fed AF (87.9 +/- 4.2%) and the lowest in the group fed the CON diet (74.0 +/- 4.3%). Fish fed the CON diet showed a significantly lower crude protein content, and the AA group had a significantly higher lipid level (P=0.05) in body carcass compared with the other groups. The highest density of intestinal goblet cells (P=0.05) was observed in fish fed the CON diet, while the lowest density was seen in the distal intestine in the AF group. The hepatocyte cytoplasm of all fish stored more glycogen than lipids. These results indicate that wheat gluten protein-based diets supplemented with dipeptide LysGly (PP) or free lysine and glycine (AA) supported growth, protein efficiency rate and intestine epithelium homeostasis. On the other hand, fish fed CON (lysine-deficient diet) showed lower survival and growth rate, and disturbances of intestine epithelium homeostasis, probably as a result of lysine deficiency.

Autore Pugliese

• Verri Tiziano

Tutti gli autori

• T. OSTASZEWSKA , K. DABROWSKI , K. KWASEK , T. VERRI , M. KAMASZEWSKI , J. SLIWINSKI , L. NAPORA-RUTKOWSKI

Titolo volume/Rivista

AQUACULTURE RESEARCH

Anno di pubblicazione

2011

ISSN

1355-557X

ISBN

Non Disponibile

Numero di citazioni Wos

11

Ultimo Aggiornamento Citazioni

25/04/2018

Numero di citazioni Scopus

10

Ultimo Aggiornamento Citazioni

26/04/2018

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile