Replacing rotifers with a microparticle diet from first feeding in yellowfin seabream, Acanthopagrus latus (Houttuyn), larvae

摘要

The possibility to replace or reduce rotifer use with a microparticle diet (MPD) from first feeding in yellowfin seabream larvae was investigated. The experiment consisted of five treatments, a rotifer (100%) control treatment (100R), three experimental treatments, which received a fixed ration of MPD supplemented with 75%, 50% and 25% of the amount rotifer fed in the control treatment (treatments 75R-MPD, 50R-MPD and 25R-MPD respectively), and finally a treatment with the fixed MPD ration only (treatment 0R-MPD). The results indicated that feeding regimes 100R, 75R-MPD and 50R-MPD did not differ significantly in the total length, final survival and stress test resistance. The highest dry weight was achieved in treatments 100R and 75R-MPD at the end of the experiment compared with treatments 50R-MPD, 25R-MPD and 0R-MPD. The 0R-MPD treatment showed the lowest growth and survival. Yellowfin seabream larvae were able to ingest inert food directly from the moment of first feeding.