AN ATTEMPT TO DETERMINE THE SUITABILITY OF THREE ARTIFICIAL FEEDS FOR THE FEEDING OF BALTIC WHITEFISH LARVAE (Coregonus lavaretus L. forma baltica) IN THE CONDITIONS OF SALMONID RESEARCH LABORATORY IN RUTKI

Abstract

Studies were carried out to determine the possibility of using three selected artificial feeds available at Polish market to feed Baltic whitefish larvae. Insufficient enzymatic apparatus in the initial stages of fish development, together with low temperature and unsuitability of dry feeds for Coregoninae result in the fact that it is necessary to use natural food. It appeared that cod starter (FK) as well as artificial plankton (Argent) were not better feeds in the case of whitefish than trout starter (FK). On the other hand, it was confirmed that trout pellets could well be used to feed whitefish larvae bigger than 20 mg (body weight) in optimal temperatures above 15°C.