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No Thumbnail AvailableProjectProgramme / project reportPrimary studies on frequencies of fertilization of fish ponds
Establishment of a Network of Aquaculture Centres in Asia
1987Also available in:
No results found.One of the common practices in traditional Chinese fish culture is the utilization of animal manure in farming fish. Although qualitative and quantitative studies have been done on the principles of fish culture in manure-loaded ponds (1, 3, 4, 5), further research on the relationship between the methods of manuring and/or fertilizing and fish yields will be of help in furts er maximizing fish production -
No Thumbnail AvailableProjectProgramme / project reportProduction, yield characteristics and economics of polyculture of Macrobrachium rosenbergii and various fish species under pond condition
Establishment of a Network of Aquaculture Centres in Asia
1986Also available in:
No results found.The effect of two densities of freshwater prawn Macrobrachium rosenbergii on production,yield eristics and economics under polyculture system were examined in four ponds of 1.75 rai each during seven months growing period.Prawns stocked at about 2 (L.D) and 5 (H.D) tails per sq.m with the average weight of 3–4 g.Fish stocked in each ponds are as follows:225,500,350 and 1250 tails per pond for common carp,giant gouramy,bighead and silver carp respectively.The average production of fish in L.D and H.D amounted to 2,295 and 2,125 kg per ha respectively.Common carp had a highest growth,while silver carp and bighead were the lowest.There was an indication that the production in H.D was higher.The average production of prawn in L.D and H.D reached 722 and 910 kg per ha.It is considered that the stocking rate of common carp should be lower,since the pond productivity was not enough to support the growth of silver carp and bighead carp.It is observed that the production of fish was not affecte d by the different stocking densities of prawn.The survival rate of common carp was the highest(92%),followed by bighead carp (83%& 93%),silver carp (89% & 80%)and giant gouramy (76%& 73%).For the prawn it ranged from 49.1–61.1%,except one replicate in L.D which comprised 95%. This may probably be due to second restocking. The F.C.R of fish,based on the F.C.R of prawn (2.5),were 0.85 and 1.12 respectively in L.D and H.D.The average weight (g) of male prawn ranged widely in each category (43–102 g) compared to female prawn (29–51 g). The percentage in number of female prawn ranged 65–72% in both L.D and H.D. There is a positive relationship between stocking density and the percentage both in number ans weight of female prawn as well as the marketable yield. The marketable yield comprised about 87% of total biomass both in L.D and H.D.*** -
No Thumbnail AvailableBook (series)ProceedingsProceedings of the FAO world symposium on warm-water pond fish culture - Rome, Italy, 18-25 May 1966. / Actes du symposium mondial organisé par la FAO sur la pisciculture en étang à température élevée - Rome, Italie, 18-25 Mai 1966 / Actas del simposio mundial de la FAO sobre piscicultura en estanques de agua templada - Roma, Italia, 18 a 25 de Mayo 1966 1967
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Book (series)FlagshipThe State of Food Security and Nutrition in the World 2021
Transforming food systems for food security, improved nutrition and affordable healthy diets for all
2021In recent years, several major drivers have put the world off track to ending world hunger and malnutrition in all its forms by 2030. The challenges have grown with the COVID-19 pandemic and related containment measures. This report presents the first global assessment of food insecurity and malnutrition for 2020 and offers some indication of what hunger might look like by 2030 in a scenario further complicated by the enduring effects of the COVID-19 pandemic. It also includes new estimates of the cost and affordability of healthy diets, which provide an important link between the food security and nutrition indicators and the analysis of their trends. Altogether, the report highlights the need for a deeper reflection on how to better address the global food security and nutrition situation.To understand how hunger and malnutrition have reached these critical levels, this report draws on the analyses of the past four editions, which have produced a vast, evidence-based body of knowledge of the major drivers behind the recent changes in food security and nutrition. These drivers, which are increasing in frequency and intensity, include conflicts, climate variability and extremes, and economic slowdowns and downturns – all exacerbated by the underlying causes of poverty and very high and persistent levels of inequality. In addition, millions of people around the world suffer from food insecurity and different forms of malnutrition because they cannot afford the cost of healthy diets. From a synthesized understanding of this knowledge, updates and additional analyses are generated to create a holistic view of the combined effects of these drivers, both on each other and on food systems, and how they negatively affect food security and nutrition around the world.In turn, the evidence informs an in-depth look at how to move from silo solutions to integrated food systems solutions. In this regard, the report proposes transformative pathways that specifically address the challenges posed by the major drivers, also highlighting the types of policy and investment portfolios required to transform food systems for food security, improved nutrition, and affordable healthy diets for all. The report observes that, while the pandemic has caused major setbacks, there is much to be learned from the vulnerabilities and inequalities it has laid bare. If taken to heart, these new insights and wisdom can help get the world back on track towards the goal of ending hunger, food insecurity, and malnutrition in all its forms. -
LetterLetter from the Acting Secretary, Department of State to D. Lubin, Hotel Raleigh, Washington 1907
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No results found.Asks for the cooperation of the Department of Agriculture and the Department of Commerce and Labor in the formulation of the IIA's plans of work. -
LetterLetter from the Acting Secretary, Department of State to D. Lubin, Hotel Raleigh, Washington 1907
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No results found.Asks for Lubin’s written views on IIA. With reference number RRFNo. 548/30; T/L).