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Biofloc-based nursery production system: Heeding the call towards a sustainable shrimp culture industry in the Philippines

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Date
2022
Author
Caipang, Christopher Marlowe ORCID
Trebol, Kathleen Mae P.
Fagutao, Fernand ORCID
Pakingking, Rolando V., Jr. ORCID
Deocampo, Joel E., Jr.
Page views
1,598
ASFA keyword
biofloc technology ASFA
shrimp culture ASFA
aquaculture ASFA
aquaculture systems ASFA
organic carbon ASFA
AGROVOC keyword
Philippines AGROVOC
Penaeus vannamei AGROVOC
Taxonomic term
Litopenaeus vannamei GBIF
Penaeus vannamei GBIF
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Abstract
The increasing global population resulted in intense pressure on the food production sectors to meet the rise in food demand. The aquaculture industry, which is one of the major food production sectors, provides opportunities in addressing issues on malnutrition and poverty alleviation. Shrimp farming is an important sub-sector in aquaculture because shrimp are not only good sources of food, but they contribute to the national economy through export revenues. This resulted in the rapid intensification of shrimp aquaculture, which created negative issues on sustainability and environmental impacts. Hence, this necessitates an urgent need to develop aquaculture production systems that yield high productivity and profitability yet possess a low carbon footprint. Biofloc technology (BFT) fit into these criteria as this technology permits intensive culture of aquatic species, less use of resources, and improved water quality as a consequence of the production and activity of beneficial microbial biomass, which, at the same time, can be utilized as a source of feed for the growing shrimp. BFT has been shown to be successful on a commercial scale during shrimp grow-out, and recent studies have shown that this technology can be further refined and optimized for the production of shrimp during the nursery phase. This review, therefore, highlights the basics of BFT and how this technology is being optimized in the production of shrimp during the nursery phase. More specifically, this discusses the benefits of this approach in ensuring a productive yet sustainable way of producing shrimp in the context of Philippine aquaculture.
Keywords
Aquatic Aquaculture Environment Litopenaeus vannamei Microbial flocs
URI
http://hdl.handle.net/10862/6322
Suggested Citation
Caipang, C. M., Trebol, K. M. P., Fagutao, F., Pakingking, R. V., Jr., & Deocampo, J. E., Jr. (2022). Biofloc-based nursery production system: Heeding the call towards a sustainable shrimp culture industry in the Philippines. International Journal of Biosciences, 20(3), 250-259. https://doi.org/10.12692/ijb/20.3.250-259 
DOI
10.12692/ijb/20.3.250-259
Type
Article
ISSN
2220-6655; 2222-5234
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  • Journal Articles [1276]

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    Analysis of the sustainability of extensive and intensive methods in brackish water fishpond culture primarily producing shrimp in three Southeast Asian countries 

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    This study is an investigation of the aquaculture methods used in brackish water fishpond culture mainly producing shrimp in the Philippines, Thailand and Malaysia. Extensive methods are practiced in the Philippines and Thailand (2 tons/ha and below for annual production of shrimp with no or few feeding method), while the intensive method is used in all the 3 countries (2 tons/ha and over for the annual production of shrimp with more feeding method). Most of the production of cultured shrimp relies on the intensive method. The yield of shrimp using the extensive method is relatively high in the Philippines, but small in Thailand due to declining water quality. With regard to the intensive method, the Philippines has a low death rate for monodon (Penaeus monodon) because it has adopted the Green water system as a measure against bacterial disease (luminous bacteria). On the other hand, Thailand and Malaysia have low survival rates owing to the lack of effective measures to prevent virus disease (White spot). For this reason, an increasing number of farms have changed their main cultured species from monodon to vanamei (P. vanamei) in Thailand and Malaysia. Consequently, the price of monodon has been falling as a result of high production of vanamei at lower prices, and the profits of monodon farms continue to decrease. If the cultivation of vanamei, which is a species introduced from South America, continues to increase, it is expected to have a negative effect on monodon farming. In order to protect monodon, a native species, it is necessary to focus on cultivating this species in Southeast Asia. In Thailand, there is a need to ensure the supply of good quality seedlings, since the quality of monodon seedlings has been deteriorating. In Malaysia, it is necessary to equalize the level of aquacultural techniques within the country because there is a disparity in techniques among fish farms. In the Philippines, both extensive and intensive methods are conducted in a sustainable manner.
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    Current status of acute hepatopancreatic necrosis disease (AHPND) of farmed shrimp in Malaysia 

    Kua, Beng Chu; Iar, Ahmad; Siti Zahrah, A.; Irene, J.; Norazila, J.; Nik Haiha, N. Y.; Fadzilah, Y.; Mohammed, M.; Siti Rokhaiya, B.; Omar, M.; Teoh, T. P. (Aquaculture Department, Southeast Asian Fisheries Development Center, 2016)
    A report about a disease problem in cultured whiteleg shrimp (Penaeus vannamei) was first received by the National Fish Health Research Center (NaFisH) in 2011 from Perak State showing signs of white feces and slow death leading to serious mortality rate. Later, in September of the same year, the Malaysian Shrimp Farmers Association (MSFA) reported to Department of Fisheries (DOF) severe mortalities in almost all of the whiteleg shrimp farms throughout Peninsular Malaysia. Sampling of shrimps for disease diagnosis was then conducted by NaFisH. The bacteriological and histopathological examinations revealed respectively the isolation of V. parahemolyticus and massive sloughing of hepatopancreatic epithelial cells. The disease was subsequently identified as acute hepatopancreatic necrosis disease (AHPND). From our 3-year study, the annual prevalence rates of AHPND were 50%, 26% and 73% in 2011, 2012 and 2013, respectively. At present, AHPND still persists in Malaysia but at a lower prevalence. The risk factors associated with the disease were studied, however, varied environmental and management data analyzed were inconclusive to relate any one parameter directly to the disease. To help ensure the early detection of AHPND, an experimental observation study on `gut scorecard was carried out and this was confirmed by PCR and histopathology. Validation of this technique has yet to be carried out to ensure its reliability. We also examined the potential use of some commercial products such as probiotics and disinfectants available in the market but unfortunately results showed that they were not effective in controlling AHPND. Control measures applied by the farmers such as the use of probiotics were also verified but data generated likewise appeared to be inconclusive. On the contrary, our preliminary study on the antibacterial property of the plant extracts, i.e. betel and lemongrass, incorporated in the feed showed some prophylactic and chemotherapeutic potential against AHPND. However, comprehensive in vitro and in vivo trials are still currently being undertaken to elucidate its efficacy and practical applications. To ensure the shrimp industry s sustainability in Malaysia, results of our ongoing and future studies aimed at preventing and controlling unwarranted outbreaks of AHPND and other emerging transboundary diseases of penaeid shrimps will be continually disseminated to shrimp farmers and pertinent stakeholders.

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