Ivanc, Aleksander

English

Ivanc Aleksander

University of Szeged

18 Agrár- és Vidékfejlesztési Szemle 2008. vol. 3. (1) PHYSIOLOGICAL APPROACH TO PRODUCTION EFFICIENCY OF RAINBOW TROUT (ONCORHYNCHUS MYKISS WALBAUM) AT DIFFERENT AMBIENT TEMPERATURES Ivanc, A1, Dekic, R2, Boskovic, Jelena1, Vukosav, Marija3, Miscevic, B.1 1 Ph.D Aleksandar Ivanc, full professor, Ph.D Jelenka Boskovic, full professor, Ph.D Branislav Miscevic, full professor, Faculty of biofarming, Venae Radomira Putnika 1, 25000 Sombor, Serbia, e mail: ivanca@Eunet.yu 2 M.A. Radoslav Dekic, Faculty of Natural Sciences and Mathematics, University of Banja Luka, Mladena Stojanovica 2, 51 000 Banja Luka, Bosnia and Herzegovina 3 M.A.Marija Vukosav, higher lecturer, High school of agriculture, Marsala Tita 39, 24300 Backa Topola, Serbia A satisfactory fish growth can be achieved with adequate feed, for that it is necessary to know which nutrients fish need in different stages of growth and how to make proper balance of nutrients for their maximum utilization. In this study, growth physiology was investigated in rainbow trout under experimental (optimal) conditions at two different ambient temperatures, 9 °C and 14 °C. During the experiment, the fish were fed with pelleted feed. Daily feed quantity was determined proportionally to fish weight and ambient temperature. Individuals used in the experiment were of the same kind, old up to one year, taken from pond fish farm „Tropic". During the experiment, the following water quality parameters were monitored: oxygen concentration, pH and COD. Water in aquariums was changed twice a day, and daily feed rations were equally disposed. The aquariums were provided with adequate devices for aeration and water purifications. At the end of experiment the fish bred at temperature of 14°C, had a higher growth than the fish bred at 9°C, but feed conversion ratio was better in fish bred at temperature of 9°C. All differences are statistically significant (p<0.05) Key words: physiology, trout, growth, experiment. 

Physiological approach to production efficiency of Rainbow trout (Oncorhynchus mykiss Walbaum) at different ambient temperatures

http://acta.bibl.u-szeged.hu/12966/1/agrarszemle_2008_001_018.pdf

Physiological approach to production efficiency of Rainbow trout (Oncorhynchus mykiss Walbaum) at different ambient temperatures

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