The unusual large harvest in March/April caused an oversupply in Asia, when shrimp demand tends to be generally low in international trade

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Export prices crashed in April and ex-farm prices fell to cost level in India and other producing countries in Southeast Asia. In international trading, new negotiations between buyers and sellers ceased for almost two months, but the market started to move slowly in July. Supply The shrimp farming season in 2018 had a positive start in most producing countries in Asia. Unlike previous years, production volume for the first harvest of the season in April was high in India, Indonesia and [...]

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Brackish potential for a shrimp farming surge in India

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3D mapping of brackish-water aquaculture resources is to be undertaken in India, backed by satellite images and extensive ground surveys, in a move that could boost the country’s shrimp production. Early in the morning, Kunjumon and his team of five are busy getting their fishing nets and other paraphernalia ready. One team member is nervous, pointing out that he has not seen the ubiquitous sea birds that frequent the zone – expressing a belief that if the birds were around, [...]

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Characterization of a new member of Iridoviridae, Shrimp hemocyte iridescent virus (SHIV), found in white leg shrimp (Litopenaeus vannamei)

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A newly discovered iridescent virus that causes severe disease and high mortality in farmed Litopenaeus vannamei in Zhejiang, China, has been verified and temporarily specified as shrimp hemocyte iridescent virus (SHIV). Histopathological examination revealed basophilic inclusions and pyknosis in hematopoietic tissue and hemocytes in gills, hepatopancreas, periopods and muscle. Using viral metagenomics sequencing, we obtained partial sequences annotated as potential iridoviridae. Phylogenetic analyses using amino acid sequences of major capsid protein (MCP) and ATPase revealed that it is a new iridescent [...]

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Asian shrimp prices, production on the move in line with rising demand

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Overall, shrimp production in Asia will increase by 5 to 10 percent this year compared to 2016, but there will continue to be some important anomalies in key production regions, anticipates Jim Gulkin, managing director of the Bangkok-based Siam Canadian Group. Thailand’s production is up this year, with Gulkin telling SeafoodSource that he expects an increase of between 10 to 15 percent over last year. But he added that the competition for raw material between processors is very strong, with [...]

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Bioavailability of crude protein and lipid from biofloc meals produced in an activated sludge system for white shrimp, Litopenaeus vannamei

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ABSTRACT The present study compared the bioavailability of crude protein and lipid from biofloc meals generated with an activated sludge system using two water sources: wastewater from shrimp experimental culture (BFL-W) and, artificially, using clean seawater (BFL-C). The sludge system operated by chemical and organic fertilization three times per week. Sampling of bioflocs occurred every two days during 81 days. To evaluate digestibility, each type of biofloc meal was incorporated into a reference diet (REF) at 300 g/kg. Another diet [...]

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Selection for disease resistance in Indian white shrimp

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The Indian white shrimp (Fenneropenaeus indicus) is an important species in the aquaculture industry of Egypt, and it has been negatively affected by various major diseases. Several selective breeding programs for farmed shrimp have succeeded elsewhere in improving disease resistance against specific pathogens, indicating that genetic improvement in resistance to several diseases is feasible. However, for optimal implementation of selection for improved disease resistance in a breeding program, it is critical to investigate if significant genetic correlations exist between disease [...]

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Shrimp Behavior 101

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It’s midnight. Do you know where your shrimp are? Rod McNeil knows because he’s underwater watching them with lights! “Lying motionless and silent on the bottom, I watch their approach, and their reaction to me. When they spot me, all their antennae go up. I move toward them, the big shrimp on the leading edge of the troop take a head high posture and keeps an eye on me. I don’t move in any closer than a meter and a half. [...]

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Testing an intensive shrimp hatchery system using biofloc technology

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The hatchery phase is a critical and complex first step in the commercial farming of Pacific white shrimp, and constant attention is required to produce shrimp postlarvae of the best quality possible. The use of biofloc technology (BFT) is increasing in the aquaculture of many commercially-important aquatic species. BFT is used to intensify production and to minimize or prevent the exchange of culture water, with a consequent reduction in potential pathogens and the discharge of nutrient-rich effluents into the environment. The [...]

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Double-stranded RNA against WSSV genes provides antiviral protection in shrimp

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Researchers explore solutions to major shrimp disease. At the end of the experiments, most of the animals treated with dsRNA against WSSV genes survived and had low rates of WSSV infection. At the end of the experiments, most of the animals treated with dsRNA against WSSV genes survived and had low rates of WSSV infection. The white spot syndrome virus (WSSV) has caused major economic losses to shrimp farmers worldwide since the 1990s. Various field treatments and strategies for controlling WSSV have [...]

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Thailand: The History of Shrimp Farming and the Factors That Led to Its Growth

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Using traditional extensive techniques in large (30 hectares or more), low-lying coastal paddy fields, the first shrimp farms in Thailand were probably started during the 1930s.  Because of the dependence on natural tidal flow for wild seed and naturally occurring food organisms, yields were usually low (approximately 200 kilograms per hectare per year–kg/ha/yr). Semi-intensive shrimp farming in Thailand started during the early 1970s and was replaced by intensive shrimp farming beginning in 1987.  Penaeus monodon was the favored species because [...]

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