<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">Juvenile pikeperch (120 g initial body weight) were fed a commercial diet (group CD) or experimental diets supplemented with rapeseed (group RO), soy (group SO), or sunflower (group SFO) oils for 55 days. The experimental diets were made by adding the given vegetable oil (VO) in quantities of 160 g kg-1 feed (84% of the total raw lipid in the diet) to a base of an extruded, commercial diet (containing 30 g kg-1 raw lipid). The dietary treatments had no significant influence on fish growth rates, apparent net protein retention (ANPR), or apparent net energy retention (ANER) (P > 0.05). The apparent lipid retention (ALR) in group SO was significantly higher than in the other groups (P &lt; 0.05). The dietary treatments tested had a significant impact on the size of the hepatocytes and their nuclei, as well as on the nucleocytoplasmic index values (P &lt; 0.05). No significant differences were noted in the overall image of the hepatocytes (degree of vacuolization or hepatocyte degeneration (P > 0.05)).</abstract>

Juvenile pikeperch (120 g initial body weight) were fed a commercial diet (group CD) or experimental diets supplemented with rapeseed (group RO), soy (group SO), or sunflower (group SFO) oils for 55 days. The experimental diets were made by adding the given vegetable oil (VO) in quantities of 160 g kg-1 feed (84% of the total raw lipid in the diet) to a base of an extruded, commercial diet (containing 30 g kg-1 raw lipid). The dietary treatments had no significant influence on fish growth rates, apparent net protein retention (ANPR), or apparent net energy retention (ANER) (P > 0.05). The apparent lipid retention (ALR) in group SO was significantly higher than in the other groups (P < 0.05). The dietary treatments tested had a significant impact on the size of the hepatocytes and their nuclei, as well as on the nucleocytoplasmic index values (P < 0.05). No significant differences were noted in the overall image of the hepatocytes (degree of vacuolization or hepatocyte degeneration (P > 0.05)).

Impact of diets supplemented with rapeseed, soy, and sunflower oils on growth rates and the histological picture of the livers of juvenile pikeperch, <italic>Sander lucioperca</italic> (L.)

Department of Aquaculture, The Stanisław Sakowicz Inland Fisheries Institute in Olsztyn, Oczapowskiego str. 10, 10-719 Olsztyn-Kortowo, Poland

Department of Ichthyology, University of Warmia and Mazury in Olsztyn, Poland

Faculty of Animal Science, Kaposvár University, Kaposvár, Hungary

Fisheries & Aquatic Life

Impact of diets supplemented with rapeseed, soy, and sunflower oils on growth rates and the histological picture of the livers of juvenile pikeperch,  (L.)

Juvenile pikeperch (120 g initial body weight) were fed a commercial diet (group CD) or experimental diets supplemented with rapeseed (group RO), soy (group SO), or sunflower (group SFO) oils for 55 days. The experimental diets were made by adding the given vegetable oil (VO) in quantities of 160 g kg-1 feed (84% of the total raw lipid in the diet) to a base of an extruded, commercial diet (containing 30 g kg-1 raw lipid). The dietary treatments had no significant influence on fish growth rates, apparent net protein retention (ANPR), or apparent net energy retention (ANER) (P > 0.05). The apparent lipid retention (ALR) in group SO was significantly higher than in the other groups (P  0.05)).

Juvenile pikeperch (120 g initial body weight) were fed a commercial diet (group CD) or experimental diets supplemented with rapeseed (group RO), soy (group...

Impact of diets supplemented with rapeseed, soy, and sunflower oils on growth rates and the histological picture of the livers of juvenile pikeperch, Sander lucioperca (L.)

Publié en ligne: 09 août 2010

Pages: 67 - 75

DOI: https://doi.org/10.2478/v10086-010-0008-x

Mots clés
liver histology, vegetable oils, Percidae, rearing parameters, nutrition

This content is open access.