USE OF OXYGEN AND POLYETHYLENE BAG FOR TRANSPORTING CARP FRY IN BANGLADESH

The problem of transportation of carp fry and fingerlings was studied over a two-year period. The first year's study indicated that by oxygenation of water, the holding time for the carp fry and fingerlings to 10% mortality could be stretched from· below 30 minutes to over 16 hours. This experience was made use of in the following year's experiments when fry and fingerlings were first held for 16 hours in water in polyethylene bags with oxygen bubbled in till inflated. Fish so treated were then transported in the same polyethylene bags to different centres in the country. The results were encouraging in the sense that not only could the mortality rate be reduced and survival time extended by the methods employed, it could also bring down the carrying cost considerably.