Abstract:

In this study, the effect of using 2 formulated emulsions (Emulsion-I and Emulsion-II) and 3 different commercial products (Olio w-3, Red Pepper, and (n-3) Top Rich) on population growth in rotifer Brachionus plicatilis culture was investigated. Experimental groups created for rotifers, respectively; DHA-Gold (Control), DHA-Gold + Emulsion-I (1st Group), DHA-Gold + Emulsion-II (2nd Group), DHA-Gold + Olio w-3 (3rd Group), DHA-Gold + Red Pepper (4th Group), DHA-Gold + (n-3) Top Rich (5th Group). To determine the population growth of rotifers according to different feeding regimes, bulk culture in 1 L culture volume was carried out with an initial density of 100 individuals/ml for 7 days and individual counts were made daily. At the end of the experiment, the highest individual number, growth rate, and fecundity ratio in the rotifers were determined as 1250 ± 11.54 individuals/ml, 0.37 ± 0.00 divisions/day, and 0.38 ± 0.01 eggs/individual in the group enriched with DHA-Gold + Emulsion-II, respectively, and these values were found to be statistically significantly different from the control group (P<0.05). It was determined that the addition of emulsion positively affected the population increase, growth rate, and fecundity rate of rotifer.