Volume 3
Issue 2
Fisheries
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Available Online: http://www.ejpau.media.pl/volume3/issue2/fisheries/abs-03.html
EFFECTS OF COMMERCIAL FEEDS ON GROWTH AND CHEMICAL COMPOSITION OF CARP (CYPRINUS CARPIO L.) KEPT IN POWER STATION COOLING WATER
Jacek Sadowski, Rajmund Trzebiatowski, Dorota Odebralska, Magdalena Wielopolska, Bartosz Wojciechowski
ABSTRACT
The feeding experiment described was run within July 19 – October 18, 1999 on 536 g (±20 g) mean individual weight carp individuals aged 1+. The fish were kept in cages stocked at a 50 ind. cage–1 density. Experimental treatments differed in the feed offered. The following feeds were used: Dan–ex 1848 (Dan), Carp Grow–ex (Grow), and AT 35 Starter (AT 35). The daily feed doses, amounting to 2.0% metabolic fish weight (W0.8) in each experimental treatment, were applied manually. During the first phase of the experiment (19 July – 13 September), the metabolic growth rate (MGR) values were 17.40; 15.73; and 13.19 g kg–0.8 in the Dan, Grow, and AT 35 treatments, respectively, the respective food conversion ration (FCR) being 1.15; 1.27; and 1.52. During the second phase of the experiment (14 September – 18 October), the respective MGR values amounted to 15.17; 15.77; and 13.24 g kg–0.8, while the corresponding FCR values were 1.32; 1.27; and 1.51. On t
Key words: carp, cooling water, cages, essential fatty acids.