Milkfish R&D in the Philippines
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Abstract
Culture of milkfish in brackish water ponds has been practiced for many years in the Philippines and recently its culture has expanded to fish cages in marine waters. Following the spontaneous spawning of milkfish in floating net cages in 1979, protocols for its seed production were developed. Studies to determine sustainable culture techniques in ponds and cages were conducted. Studies on nutritional requirements of milkfish at different developmental stages were done to reduce dependence on live prey organisms during hatchery operations and optimize feed formulations for nursery and grow-out cultures. In recent years, research geared towards the environmental impact of milkfish culture and ways to mitigate the negative effects of intensive farming practices. Prospects for the milkfish industry are discussed in light of the recent advances in milkfish R&D and Philippine government initiatives to increase fish production by mariculture.
Suggested Citation
de Jesus-Ayson, E. G. T. (2010). Milkfish R&D in the Philippines. In I. C. Liao & E. M. Leaño (Eds.), Milkfish aquaculture in Asia (pp. 47-59). Keelung, Taiwan: National Taiwan Ocean University, The Fisheries Society of Taiwan, Asian Fisheries Society and World Aquaculture Society.
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Corre, Kaylin G. (Aquaculture Department, Southeast Asian Fisheries Development Center, 1988)The results of research on nursery and grow-out rearing of prawn conducted by the SEAFDEC Aquaculture Department for over a decade are reviewed. Different rearing facilities designed to accommodate hatchery-produced prawn fry are presented with corresponding data on growth, survival and production. Studies on stocking density, fertilization/natural food production, water management, feeds and feeding schemes and harvest/post-harvest handling are evaluated and viable technology identified. Diseases, pests and predators and other factors considered as production constraints are also mentioned. The success in hatchery operation for prawn coupled by the gradual emergence of nursery and grow-out rearing technology have triggered off a technology-dependent prawn industry. When SEAFDEC AQD was established in 1973, there were very few commercial prawn monoculture ventures in the country. Prawn pond production was mostly an incidental crop in milkfish culture. At present, various prawn grow-out techniques ranging from extensive, semi-intensive and intensive culture systems are in practice. SEAFDEC AQD focused its research on the extensive and semi-intensive culture systems which are within the reach of most farmers in contrast to the intensive system that is highly capital-intensive. There have been much work done in nursery and grow-out operations, but much remains to be done in research, among which are the development of nutritionally-efficient and low-cost feed, control of diseases, etc.





