Now showing items 1-9 of 9

    • Article

      Culture of finfish in netcages 

      DD Baliao, MA De los Santos & NM Franco - Aquaculture Engineering, 1998 - Society of Aquaculture Engineers of the Philippines, Inc.
      This report consists of two parts, the first deals on the cage culture of grouper, and the second on cage culture of tilapia. The culture of groupers is done in netcages set in marine waters, while tilapia is raised in netcages set in freshwater ponds, reservoirs or in lakes.
    • Article

      An economic analysis of the modular pond system of milkfish production in the Philippines 

      RF Agbayani, DD Baliao, NM Franco, RB Ticar & NG Guanzon Jr. - Aquaculture, 1989 - Elsevier
      In 1980, the annual yield of milkfish ponds in the Philippines was 800 kg/ha while the potential yield is estimated to be 2000 kg/ha. The modular pond system analyzed in this study can largely close the gap between actual and potential yield through more efficient use of pond capacity to increase the number of croppings up to 7 times in 1 year. Pilot-scale production using the modular pond system was done at the Leganes Research Station (LRS) SEAFDEC, Iloilo, and at three cooperating commercial farms. Scale of operation ranged from 2.7 ha to 7.9 ha. From 2 to 7 production runs were recorded with per hectare outputs ranging from 278 kg to 341 kg per run. Input costs were based on actual figures and the ex-farm milkfish price as P21.00 (4 to 6 fish/kg). The average return on investment and payback period for all sites was 68.81% and 1.25 years, respectively.
    • Article

      The economics and marketing of cage-raised finfish and pen-raised mudcrab 

      DD Baliao, MA de los Santos & NM Franco - Aquaculture Engineering, 1998 - Society of Aquaculture Engineers of the Philippines, Inc.
      As part of the technology verification exercise for technologies developed through research, the economics and marketing aspects were investigated before such technologies can be extended to industry practitioners. These were done for groupers raised in marine fishcages, tilapia raised in fishcages set in farm reservoirs, and for mudcrabs raised in pens set in mangroves.
    • Article

      The economics of retarding milkfish growth for fingerling production in brackishwater ponds 

      DD Baliao, NM Franco & RF Agbayani - Aquaculture, 1987 - Elsevier
      Two experiments were conducted to measure the economic viability of retarding milkfish growth (stunting) in brackishwater ponds. In the first experiment, 2-month-old fish were reared for 6 months in ponds with initial stocking densities of 15, 20, 25, and 30 fish/m2. The second experiment had a common stocking density of 20 fish/m2 with rearing periods of 6, 9, and 12 months. All experiments followed the lab-lab method of growing natural food plus additional substrates. Supplemental feeding using rice bran mixed with ground trash fish started 60 days after initial stocking.

      Under Philippine conditions stunting milkfish fingerlings at 20 fish/m2 for 6–9 months is most cost effective; this permits the production of milkfish fingerlings for lower cost than they can be purchased.
    • Book

      Grouper culture in floating net cages 

      DD Baliao, MA delos Santos, NM Franco & NRS Jamon - 2000 - Aquaculture Department, Southeast Asian Fisheries Development Center
      Series: Aquaculture extension manual; No. 29
      The manual describes the culture of groupers (Epinephelus) in floating cages, providing a farming option for grouper growers and also a production alternative to the farmed species being done today, such as shrimp, milkfish and tilapia. The following aspects are covered: species identification for commercially cultured groupers; source of stock; net cage specifications; anchor; hides and shelters; nursery net cage operation; production cages; harvesting; post-harvest; profitability analysis of grouper cage culture; and, cost and return of growing grouper in cages.
    • Book

      The modular method: Milkfish pond culture 

      DD Baliao, MA de los Santos & NM Franco - 1999 - Aquaculture Department, Southeast Asian Fisheries Development Center
      Series: Aquaculture extension manual; No. 25
      The modular method of milkfish culture (Chanos chanos) described in the manual is an improvement over the traditional extensive method. The manual is intended for the use of fish farmers and aquaculturists, extensionists, and students of aquaculture not only in the Philippines, but also in other milkfish-producing countries in Southeast Asia and the world. It covers the following: Interesting facts about milkfish -- biological characteristics, artificial breeding of milkfish; Design and operation of modular pond system -- pond preparation, stocking in the nursery or transition ponds, stocking in the rearing ponds, care of stock, pond utilization and production schedule, harvest and post-harvest; and, Economics and costing.
    • Book

      Mudcrab, Scylla spp, production in brackishwater ponds 

      DD Baliao, MA de los Santos & NM Franco - 1999 - Aquaculture Department, Southeast Asian Fisheries Development Center
      Series: Aquaculture extension manual; No. 28
      Mudcrab (Scylla spp) production in brackishwater ponds is now gaining popularity, especially in communities that need to supplement their income. The manual covers the following: Distribution; Grow-out operation in ponds - site selection, pond specification, pond preparation, source of juveniles, transport and stocking of juveniles, care of pond and stock, feeds and feeding, harvest, post-harvest; Production and profits; Cost and analysis. It is hoped that the manual will be of use to fishfarmers and aquaculturists, extensionists, and students of aquaculture not only in the Philippines but also in other mudcrab producing countries in Southeast Asia.
    • Book

      Net cage culture of tilapia in dams and small farm reservoirs 

      DD Baliao, MA de los Santos, NM Franco & NRS Jamon - 2000 - Aquaculture Department, Southeast Asian Fisheries Development Center
      Series: Aquaculture extension manual; No. 30
      The manual describes the net cage of tilapia in dams and small farm reservoirs, which has been found to be a low-cost yet high-income earning farm activity and offers an excellent option as an alternative livelihood for poor inland fisherfolks. The following aspects are covered: 1) Characteristics of a suitable site; 2) Design of the net cages - the floating cage, the stationary/fixed cage; 3) Stocking the net cages - source of juveniles, stocking rate, stocking time, acclimation; 4) Management of the cages - feeds and feeding, monitoring activities; 5) Harvesting - partial harvest, total harvest; and, 6) Profitability analysis.
    • Book

      Pen culture of mudcrab in mangroves 

      DD Baliao, MA de los Santos & NM Franco - 1999 - Aquaculture Department, Southeast Asian Fisheries Development Center
      Series: Aquaculture extension manual; No. 26
      This manual, describing the pen culture of mudcrab (Scylla spp) in mangroves, is intended for the use of fishfarmers and aquaculturists, extensionists, and students of aquaculture, not only in the Philippines but also in other mudcrab-producing countries in Southeast Asia. It covers the following: Site selection; Installation of net enclosure; Materials; Rearing operation; Feeds and feeding; Stock sampling; Water quality and pen management; Harvesting; and, marketing.