Abstract
For the appropriate quantity and quality of fish meat the pond farmers need to use up to date nutrition and feeding technologies. Recently the intensification of the carp production is stepping up with the availability the proper quality of the artificial feeds. The using of different feed additives make a better feed conservation ratio, faster growing rates and more uniform stocks.
 In our experiment what is made with common carp (duration of the experiment was 8 weeks long) we compared two different kinds of feed additives in different doses. One of them contains only natural mineral elements and the other additive is a natural origin probiotics. Both additives were used in the quantity of 0.5, 1 and 2% of the total feed. By the result of the 8 weeks experiment it could be said, that the using of the humic acid based mineral elements feed additive. Makes a better FCR comparing with the control stock, but was not as good as the using of the probiotics. At the humic acid treatments the more doses, the better FCR value, but at the probiotics it wasn’t true. The 0.5% probiotic treatment gave the best result. It is concluded that the using of the probiotic feed additives always gave a better performance of the fishes (average weight, biomass, FCR) than the humic acid treatments. The using of the feed additives hasn’t got an influence for the survival rate of the carps.
Highlights
In our experiment what is made with common carp
Both additives were used in the quantity
Makes a better FCR comparing with the control stock
Summary
Gerendai és Varga (2003) brojler-csirkékkel végzett etetési kísérletükben megfigyelték, hogy az ásványi anyagok és a mikroelemek szerves huminsav-komplex formában voltak jelen, ezáltal könnyen felszívódtak az állatok bélrendszerében, elősegítve a tápok beltartalmának teljesebb emésztését. Vucskits et al (2010) patkányokon végzett kísérleteikben megállapították, hogy optimális körülmények között sem a fulvosav, sem a huminsav nem befolyásolta szignifikánsan a gazdasági paramétereket. A kereskedelmi forgalomban kapható huminsavas kiegészítő, melyet kísérletünkben használtunk, az ásványi anyagokat és a mikroelemeket szerves huminsavkomplex formában tartalmazza, melyek ezáltal könnyen felszívódnak az állatok emésztőrendszerében.
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