Researches Regarding the Combined Fodder Additives (Bio-Mos+Nupro+Selplex) Effects on the Productive Performances and Health of Rainbow Trout (Oncorhynchus Mykiss W.)
Keywords:combined fodder additives, meat quality, productive performances, rainbow trout
The trial had been carried out during 5 May–30 September 2009, (23 weeks) at the trout farm ICAS Gilau, Cluj County. Two groups were implied: a Control group and one experimental group (Bio-Mos0.2%+SelPlex0.03%+NuPro2%) each consisting of 250 rainbow trout juveniles. The experimental group received 0.2 % Bio-Mos+0.03% SelPlex+2%NuPro. At the end fish reached an average weight of 253.20 g/specimen for experimental group and 241.10 g/specimen for the Control group. The growth rate incresed by 5.23 % at the experimental group comparative with the Control group. The highest value of specific growth rate was recorded at group E, 1.51 g/day, with 5.59 % higher than the specific growth rate of the Controls. The addition of combined fodder additives in group E feed led to an abatement of the feed conversion rate (1.39:1) by 2.12 % smaller comparative with the Control group (1.42:1). The analysis of indices regarding the fish health and survival rate, showed the positive effects of the combined additives. At intestinal level it was noticed an increasement of villi lenght at group E with 10.72 % higher comparative with the Control group. A significant improvement of selenium content of rainbow trout meat was also noticed.
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