3 Maturation diets for broodstock freshwater prawns

BERRIED FEMALES brought into the hatchery just before their eggs hatch are not normal ly fed. If they are, they can be given the normal grow-out diet. However, if broodstock are being maintained for long periods, it is best if you use a diet which encourages maturation. Some simple methods of supplementing grow-out feeds for this purpose are described in the section of the manual on broodstock. Annex 3, Table 1 shows two formulae for specific broodstock diets which have been shown to be effective for this species.

ANNEX 3 TABLE 1
Broodstock diets for Macrobrachium rosenbergii

SOURCE: THESE TWO DIETS GAVE THE HIGHEST NUMBER OF EGGS PER G BODY WEIGHT OF FEMALE (APPROXIMATELY 1 355), THE LARGEST EGG DIAMETER (APPROXIMATELY 0.5 MM) AND THE HIGHEST HATCHING RATE (90% FOR DIET 1 AND 82% FOR DIET 2) IN A TRIAL WITH MACROBRACHIUM ROSENBERGII BY DAS, SAAD, ANG, LAW AND HARMIN (1996).