XN000022-1988-03-31 — Page 16

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THURSDAY, MARCH 31, 1988

NEW DEVICE FOR FEEDING FISH FRY

(THURSDAY}

THE AGRICULTURE AND FISHERIES DEPARTMENT TODAY INTRODUCED TO MARICULTURISTS A NEW DRVICE FOR THE MORE EFFICIENT FERDING OF FISH FRY UNDER CULTURE IN FISH CULTURE ZONES TO BNHANCE GROWTH AND SURVIVAL RATES.

THE NEW DEVICE, A FISH FRY FEEDER

MARICULTURE DEPARTMENT'S

DEVELOPMENT SECTION, IMPROVEMENT ON THE CONVENTIONAL FEEDING TECHNIQUE.

DEVELOPED BY THE REPRESENTS A BIG

THE IT HAS

ADVANTAGES OF SAVING LABOUR AND REDUCING THE CHANCES OF INFECTION, THEREBY MINIMISING FISH MORTALITY.

DEVICE THE CONSTRUCTION OF THE

WAS EXPLAINED

20 TO AROUND MARICULTURISTS ATTENDING A SEMINAR ON MARICULTURE TECHNIQUES AND MANAGEMENT.

THE DEPARTMENT'S FISHERIES OFFICER (MARICULTURE DEVELOPMENT), MR RICKY LUK, TOLD THE MARICULTURISTS THE FEEDER BASICALLY CONSISTED OF A FINE MESH NYLON NETTING MOUNTED ON A CYLINDRICAL SKELETON MADE OF GALVANISED WIRE NETTING.

"THE COST OF THE CONSTRUCTION OF

I

THE FEEDER IS RELATIVELY

INEXPENSIVE AND ITS OPERATION IS SIMPLE, HE SAID.

"AFTER SMEARING A PASTE OF MINCED FISH EVENLY AND FIRMLY ON TO ITS SURFACE, THE FEEDER CAN BE LOWERED INTO THE FISH CAGE BY MEANS OF A POLYETHYLENE ROPE. AND THE FISH FRY CAN FEED ON THE ENTIRE SURFACE OF THE FEEDING CYLINDER."

METHOD MOST

OF

MR LUK SAID THAT UNDER THE CONVENTIONAL MARICULTURISTS FED THEIR YOUNG FISH STOCK BY SCATTERING SMALL BITS MINCED FISH INTO THE FISH CAGE BY HAND WHILE SOME USED A PERFORATED PLASTIC TRAY FOR HOLDING THE MINCED FISH AS FEED.

FISH

THE "THESE PRACTICES HAVE PROVED NOT VERY EFFICIENT AS

MINCED

TISSUES ARE EASILY SCATTERED ON TO

THE THE SEA BOTTOM.

QUALITY AND LEAD DETERIORATION OF THESE PIECES MAY IMPAIR THE WATER TO OXYGEN DEPLETION, SUBSEQUENTLY CAUSING FISH KILL, HE SAID.

MR LUK ALSO SAID THE NEW DESIGN NOT ONLY SOLVED THE PROBLEMS THE EFFECT EXPERIENCED BY THE CONVENTIONAL METHOD BUT ALSO ACHIEVED OF MINIMISING FEED WASTAGE AND ENSURING EVEN FEED DISTRIBUTION, THEREBY REDUCING THE PRODUCTION COST CONSIDERABLY.

DEVICES AND ON THE OXYGEN

TODAY'S SEMINAR ALSO INCLUDED TALKS ON THE CHOICE

DETECTION KIT

ΤΟ DESIGNED

OF AERATION PREVENT FISH

MORTALITY CAUSED BY OXYGEN DEPLETION.

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