EFFECT OF BETAFIN ADDITION ON SELECTED INDICES OF CARP FRY REARING IN PONDS
Antoni Przybył, Jan Mazurkiewicz, Maria Madziar, Marek Hallas
The August Cieszkowski Agricultural University in Poznań
ABSTARCT. Three feed mixtures obtained with the extrusion method, and balanced on the isonitric and isocaloric levels, were tested. BETAFIN preparation containing 96% of betaine was added to the experimental feeds B and C, in the amount of 0.15 and 0.2% respectively. The material consisted of carp fry of average individual weight 6.25 g. The feeding test was carried out for 42 days in the experimental ponds of 40 m2 in area. Based on the feeding test results, it was found that carp fry utilized in the most effective way the C feed, containing 0.2% of the investigated preparation. The best food conversion ratio of 1.22 and the highest survival rate were obtained in this group.
Key words: CARP, BETAFIN (BETAINE), FEED MIXES, EXTRUSION, FEEDING