At the Biosolutions booth, sitting, Mary Ann C. Solis, Sales Director, Biosolutions International Corp (left) and Emelyn Bravo, Bacolod, Philippines. Standing, Alexandre Veille, Olmix, Jakarta, Indonesia (left) and Dr Dean Akiyama, Consultant, Feedmix. Veille presented on immunomodulation as feed additives and Akiyama on technical constraints for the shrimp farming industry.
White spot syndrome virus (WSSV) is the major disease threat with both the monodon and vannamei shrimp affected. There are reports on outbreaks of early mortality syndrome (EMS) and Enterocytozoon hepatopenaei (EHP), but industry players say that the impact of the latter is less compared to that of WSSV. However, WSSV may occur singly or in combinations with EMS or EHP. In her presentation during this Congress, Roselyn Usero, from the NPPC laboratory, reported widespread outbreaks in region 1 (Ilocos) for all three diseases for the January-September 2017 period while EMS was more prominent in region 8 (Eastern Visayas).
Reviving monodon shrimp farming Monodon shrimp hatcheries still depend on wild broodstock for post larvae production. Although monodon shrimp are being farmed by both large and small farms, the majority are marginal farmers. In aquaculture, the Department of Science and Technology (DOST) has a program to help small and medium sized entrepreneurs. During this Congress, the Southeast Asian Fisheries Development Center/Aquaculture (SEAFDEC/AQD) held an evening session to discuss with industry stakeholders its plan to return to monodon shrimp farming with the â€œOplan Balik Sugpoâ€? program. Dr Leobert de la Pena reviewed the status of monodon farming and Dan Baliao, AQD chief described the program on domestication and breeding of the species starting with the local wild stock. The aim is the production of SPF broodstock and
Ryan Alegre, Dobe Hatcheries (second left) and team.
disease-free post larvae. Past experiences with domestication and the development of breeding programs for the shrimp in Hawaii and Thailand, indicate that it will take several years before SPF broodstock will be available for industry in the Philippines. Recognizing the long process, high investments as well as the high prevalence of WSSV in wild stocks, industry stakeholders countered the local wild stock breeding plan with suggestions of introducing SPF P. monodon broodstock from Thai and Hawaii breeding programs.
Success stories and polyculture Farmer Conde Mascado in Brgy Dahican, Mati City, Davao Oriental recounted how he started as a small marginal farmer, with a 0.5 ha pond stocking 20,000 post larvae (4 PL/m2) in 2012. He suffered for over a year with WSSV. Subsequently with help attributed to the technical assistance provided by Charoen Pokphand Foods Philippines Corporation and support from BFAR, his group slowly built up their shrimp farming business into intensive farms. The group now has 64 farmers with a total culture area of 100 ha. They formed the Dahican Shrimp Association. Mascado alone has an 18-man team at his farm and others in the vicinity now enjoy better livelihoods from shrimp farming. Erwin D. Enriquez of TDNRC Aquafarm detailed practices in traditional extensive systems in Hagonoy, Bulacan. Milkfish is the major commodity and shrimp is added for additional income. Initially, milkfish and vannamei shrimp are stocked in separate ponds for 1-3 weeks. From the second week, milkfish and shrimp are released to grow-out ponds at the same time. Stocking density of shrimp is 5-7 juveniles/m2, days of culture for shrimp is 75-90 for sizes 12-30g. Partial harvesting of shrimp starts after 2.5 months or when shrimp reaches 12g. Shrimp yields are 150-250kg/ha and there are 3 cycles/year, providing a profit margin of 40%. In polyculture with tilapia in Pampanga, Philip Naguit said that tilapia serves as the major commodity and vannamei as an additional income, with a profit margin of 70%. Related article: Living with the white spot virus in Negros, pages 8-13.
PhilShrimp director for Luzon, German D Cruz (left) and Vice President Luzon, Jake Lorenzo S Vergara.
January/February 2018 AQUA Culture Asia Pacific Magazine