%0 Journal Article
%T COMPARISON OF EFFICIENCIES OF USING TRAINER FISH AND SHAPE OR TASTE MODIFIED FEED FOR ENCHANCING DIRECT WEANING OF PIKEPERCH (Sander lucioperca L.) YEARLINGS ON DRY FEED
%A Beliczky
%A G¨¢bor
%A Bercs¨¦nyi
%A Mikl¨®s
%A Felf£¿ldi
%A Zolt¨¢n
%A Horv¨¢th
%A Zolt¨¢n
%A N¨¦meth
%A S¨¢ndor
%J -
%D 2013
%X Sa£¿etak Two practical methods aimed at the enhancement of efficiencies of weaning pond-raised pikeperch (Sander lucioperca L.) yearlings on dry feed were compared in two consecutive experiments. The first method was applying pellet-feeding fish as trainers/teachers for naive fish. As trainers, either pikeperch or perch (Perca fluviatilis L.) were used. The treatments and control (without trainer fish) were run in triplicates (9 aquaria, 40 fish/aquarium). Pikeperch yearlings were not able to learn to eat dry feed by social learning. In contrast, the presence of trainers decreased the success of weaning of naive fingerlings non-significantly (2.2% with pikeperch trainers; 7.8% with perch trainers; 8.3 % with only naive fish). The second method was to modify the taste and shape of the pellet. Bullet-form feed pellets were ground and reshaped as ¡°artificial blood worms¡± (ABW). ABW were flavored either by Chironomus mixture or by a commercial aroma. Non-flavored ABW served as a control. Commercial aroma flavored ABW significantly increased the percentage of weaned fish (16.7%) in comparison to the bloodworm flavored (12.2%) and non-flavored (4.4%) ones
%K pikeperch
%K social learning
%K weaning
%K dry feed
%U https://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=166408