Proceedings of the Aquaculture Workshop for SEAFDEC/AQD Training Alumni

Proceedings of the Aquaculture Workshop for SEAFDEC/AQD Training Alumni, 8-11 September 1992, Iloilo, Philippines

Fri, 01 Jan 1993 00:00:00 GMT

Proceedings of the Aquaculture Workshop for SEAFDEC/AQD Training Alumni, 8-11 September 1992, Iloilo, Philippines Villegas, Cesar T.; Castaños, Milagros T.; Lacierda, Rodrigo B. The workshop was conducted to maintain linkage between Southeast Asian Fisheries Development Center, Aquaculture Department and its alumni. It also aimed to: assess the effectiveness of the training alumni and among trainees; inform alumni of the recent technologies developed by the Department; recommend ways to make the training courses more responsive to the needs of the fish farmers and the aquaculture industry. The training alumni identified several problems regarding the capability of the technical staff in aquaculture, i.e. shrimp seed production, marine fish seed production, grow-out culture, and fish diseases. The contributions of the selected participants during the meeting which are contained in this volume are cited individually.

Shrimp seed production in Malaysia

Fri, 01 Jan 1993 00:00:00 GMT

Shrimp seed production in Malaysia Muhamad Hatta Bin Haji Mahmud Villegas, Cesar T.; Castaños, Milagros T.; Lacierda, Rodrigo B. The giant freshwater prawn, Macrobrachium rosenbergii, and the marine shrimp, Penaeus monodon, are now becoming the most important cultured species in Malaysia. The progress in the aquaculture of these species has led to the development of hatcheries in various parts of the country. To date, a total of 50 hatcheries are now in operation. Fry production technology varies between hatcheries. For M. rosenbergii, clear-water, closed system, and green-water larviculture techniques are common. For P. monodon, the two-tank and one-tank larviculture systems are used. A range of problems such as lack of skilled hatchery personnel, larval diseases, and lack of financial support hampers hatchery operations. In order to ensure the continued operation of the hatcheries, the Department of Fisheries (Malaysia) is providing the necessary support services and technical assistance.

The shrimp hatchery industry in the Philippines

Fri, 01 Jan 1993 00:00:00 GMT

The shrimp hatchery industry in the Philippines Lamera, Elizabeth Villegas, Cesar T.; Castaños, Milagros T.; Lacierda, Rodrigo B. Fifteen years after SEAFDEC Aquaculture Department first offered its training course on Barangay Prawn Hatchery Management, the giant tiger shrimp industry has grown tremendously. Among the private investors in shrimp (Penaeus monodon) hatchery is Jamandre Industries, Inc. But problems (e.g., scarcity of spawners and lack of effective artificial feeds) led the company to explore culture of penaeid shrimps other than tiger shrimp. Although survival of P. stylilostris and P. vannamei were found to be higher than P. monodon in grow-out ponds and in the hatchery, their culture did not take off in the country. For the penaeid shrimps, technology remains largely an art.

The shrimp farming industry in the Philippines

Fri, 01 Jan 1993 00:00:00 GMT

The shrimp farming industry in the Philippines Corre Jr., Valeriano Villegas, Cesar T.; Castaños, Milagros T.; Lacierda, Rodrigo B. The shrimp farming industry in the Philippines is the culture of shrimp (Penaeus monodon) in brackishwater and seawater grow-out farms to marketable size. The industry is highly dependent upon the other sectors/components of the shrimp culture industry, including:

the shrimp hatcheries for their supply of fry (PLs);
the feed millers for their supply of commercial pelletized feeds, primarily for semi-intensive and intensive shrimp farms;
the shrimp processors/exporters for the purchase of their harvests;
the financial institutions for their capital and operational costs; and
the research institutions and the government for solutions to technical and other problems.

Such dependence makes shrimp farming vulnerable. Other than that, it is also a high risk business. In addition, monsoon rains, typhoons, and floods can significantly affect shrimp farming. Pollution from watershed activities and from self-generated organic load has resulted in slower shrimp growth, higher susceptibility of shrimp to diseases, and mass mortalities. Widely fluctuating export market prices and demands are also major concerns of the industry.