Record Details     « New Search       Brief Record Full Record MARC Record     Bibliographic Data Control Number 55446 Date and Time of Latest Transaction 20120503221859.PM General Information 120503s |||||||||b ||00||| Cataloging Source PCARRD Local Call Number SH 380.6 T32 Main Entry - Personal Name Tabbu, Nilda S. Title Statement Growth and survival of Penaeus monodon postlarvae at different feeding regimes and stocking densities in earthen brackishwater nursery ponds Summary, Etc. The effects of different stocking densities (50, 100, and 150 sq m) and two feeding regimes (natural food, consisting mainly of lab-lab, and natural food plus artificial diet) on the growth and survival of Penaeus monodon postlarvae (PL4 to PL5) were evaluated in eighteen 40 sq m earthen brackishwater nursery ponds using tidal water exchange for a period of 45 days. Results indicated that the effect of different stocking densities were highly significant (P< .01) on growth but not on the survival at the two feeding regimes. Likewise, no interaction effect was discerned. Shrimps that were given artificial feed (Treatments II, IV and VI) obtained higher mean weight gains of 1.55 g, 1.17 g, and 1.05 g, respectively, than those shrimps that were not given artificial feed (I - 1.44 g, III - 0.92 g, and V - 0.66 g). Similarly, those reared with artificial feed attained better percent survival of 41.62% (II), 67.44% (IV) and 52.14% (VI) as compared to shrimps that were not given artificial feed (I - 42.53%, III - 54.61% and V - 46.90%). An exploratory economic study showed that the nursery operation gave promising results in all treatments. High ROIs were obtained to give a safe margin for the risk involved in this kind of business. Among all treatments, Treatment V had the highest ROI of 693% and shortest payback period of 0.19 years Subject Added Entry - Topical Term PENAEUS MONODON   FEEDING SYSTEMS   FISH FEEDING   STOCKING DENSITY   BRACKISH WATER           Physical Location           Digital Copy Not Available          Add to Book Cart  |   Download MARC