Kucska B.,University of Kaposvár |
Feledi T.,Research Institute for Fisheries Aquaculture and Irrigation |
Adorjan A.,Research Institute for Fisheries Aquaculture and Irrigation |
Molnar T.,University of Kaposvár
Acta Alimentaria | Year: 2016
This study investigated the effects of three different commercial diets on the growth, feed utilization, and product quality of pike (Esox lucius). The fi rst diet had low lipid (12%) and low protein (37%) (diet A) content, the second diet had low lipid (12%) and high protein (52%) content (diet B), the third diet had higher lipid concentration (15%) and high protein content (52%) (diet C). Two hundred and seven pike were stocked in an experimental RAS (Recirculating Aquaculture System) and were fed ad libitum for the duration of the nine week trial. Specifi c growth rates, feed conversion rates, protein utilization, as well as body composition and somatic indices were calculated. Fish fed with diets B and C had signifi cantly better SGR (Specifi c Growth Rate) and FCR (Feed Conversion Rate) than fi sh fed with diet A. The higher dietary lipid concentration does not cause signifi cantly better protein utilization. Moreover, it had a negative effect on the product quality by increasing the body lipid concentration and the visceral fat deposition. © 2016 Akadémiai Kiadó, Budapest.