抄録
The effect of an antibacterial substance on the growth of rotifer Brachionus plicatilis was investigated using various conditions for culture. Among the four antibacterial substances used (chemical substances for aquaculture on open sale), oxtetracyclin hydrochloride had the most significant effect when it was initially added into the culture medium at 20ppm. It is highly possible that increasing rotifer density in the batch culture was influenced by bacterial density due to the effects of antibacterial substances. This effect was confirmed in the mass batch culture, i.e. the maximum density reached 620 individuals per ml by the 11th day after the addition of oxytetracyclin hydrochloride into the medium at 20ppm.
