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Comparative study between mono and polyculture systems on the production of prawn and milkfish in brackishwater ponds

Establishment of a Network of Aquaculture Centres in Asia









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    Indonesia - Improvement of milkfish pond production in Jepara, central Java. A report prepared for the brackishwater shrimp and milkfish culture applied research and training project 1979
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    This is one of a series of field documents prepared during the course of the UNDP project identified on the title page. The conclusions and recommendations given in the report are those considered appropriate at the time of its preparation. They may be modified in the light of further knowledge gained at subsequent stages of the project. The designations employed and the presentation of the material in this document do not imply the expression of any opinion whatsoever on the part of the Unite d Nations or the Food and Agriculture Organization of the United Nations concerning the legal or constitutional status of any country, territory or sea area, or concerning the delimitation of frontiers.
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    Production of prawn (Penaeus monodon Fabricius) using the modular pond system
    Establishment of a Network of Aquaculture Centres in Asia
    1987
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    This study was conducted to evaluate survival, growth, production, food conversion and economic feasibility in the monoculture of prawn (Penaeus monodon) at two stocking densities (15,000 juv/ha and 20,000 juv/ha) following modular pond system. Four sets of existing modular ponds at SEAFDEC, Leganes Research Station were used for this study. Each set forms a three-stage link-up. The area of each set is increasing progressively in a ratio of 1:2:4 proportion or a corresponding ratio of 550, 1100 and 2,200 m2 respectively. Using this method, prawns were grown and were provided a better utilization of space and increased number of croppings (six crops a year) than previously realized in straight-run culture. On Treatment 1 and Treatment 2 growth, survival rate and final body weight of the prawn showed that there were no significant differences between the two treatments. Observed significant differences was on greater average production of the prawn achieved which was 533 kg/ha in Treatme nt 2 than 404 kg/ha production in Treatment 1. Economic analysis for Treatment 1 and Treatment 2 showed that returns on investment were 69.5 and 72.0%; the payback periods were 1.4 and 1.3 years, respectively.

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    What will be needed to realize the vision of a world free from hunger and malnutrition? After shedding light on the nature of the challenges that agriculture and food systems are facing now and throughout the 21st century, the study provides insights into what is at stake and what needs to be done. “Business as usual” is not an option. Major transformations in agricultural systems, rural economies, and natural resources management are necessary. The present study was undertaken for the quadrennial review of FAO’s strategic framework and for the preparation of the Organization Medium-Term plan 2018-2021.
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    The FAOSTAT emissions database is composed of several data domains covering the categories of the IPCC Agriculture, Forestry and Other Land Use (AFOLU) sector of the national GHG inventory. Energy use in agriculture is additionally included as relevant to emissions from agriculture as an economic production sector under the ISIC A statistical classification, though recognizing that, in terms of IPCC, they are instead part of the Energy sector of the national GHG inventory. FAO emissions estimates are available over the period 1961–2018 for agriculture production processes from crop and livestock activities. Land use emissions and removals are generally available only for the period 1990–2019. This analytical brief focuses on overall trends over the period 2000–2018.
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    World food demand has seen massive changes, including a shift from staple foods to animal proteins and vegetable oils. In the short to medium term, this trend in global food demand will continue. There will be an increased demand for vegetable oils, meat, sugar, dairy products and livestock feed made from coarse grains and oilseed meals. There are numerous mid-term forecasts for the Russian Federation’s meat sector. Most of them agree on the following trends: (i) the consumption of poultry and p ork meat will increase; (ii) the consumption of beef will decrease or stabilize; and (iii) the Russian Federation will remain a net importer of meat on the world market. According to OECD and FAO projections, meat imports from the Russian Federation will decrease from 3 to 1.3 million tonnes, owing to an anticipated growth in domestic chicken meat and pork production. The country’s share in global meat imports is anticipated to decrease from 12 percent in 2006–2010, to 4 percent in 2021. While t he Russian Federation will continue to play an important role in the international meat market, it will fall from its position as the largest meat importing country in 2006–2010 to the fourth largest global meat importer by 2021, behind Japan, sub-Saharan African countries, and Saudi Arabia.