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No Thumbnail AvailableProjectProgramme / project reportThe artificial reproduction and pond rearing of the African catfish Clarias gariepinus 1994
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Book (series)Technical studyArtificial Reproduction and Pond Rearing of the African Catfish Clarias Gariepinus in Sub-Saharan Africa - A Handbook 1996
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No results found.The manual is based on the practical experiences of the authors on the artificial reproduction and pond rearing of the African catfish Clarias gariepinus within FAO field projects in the Central African Republic, the Republic of the Congo, Kenya and Nigeria. The manual is divided into five major sections dealing with: 1) general biology, including natural feeding habits and reproduction; 2) artificial reproduction, including induced propagation without and through hormone injection; 3) fry nursi ng in earthen ponds, including pond preparation, fertilization, feeding and management; 4) monoculture, including feeding methods; and 5) polyculture with Tilapia. In addition, information is provided concerning the economics of different fingerling and grow-out farming practices in Africa, and concerning diseases and hybridization. -
No Thumbnail AvailableProjectManual / guideManual on seed production of African catfish (Clarias gariepinus)
Institutional Strengthening in the Fisheries Sector, Bangladesh
1992Also available in:
No results found.Due to the difficulties of Tilapia culture in Africa, particularly, those resulting from overproduction and consequent stunting in growth, attention was focused on another African fish group, which included the large size African catfish, Clarias gariepinus (Burchell, 1882). For pond culture of this species initial attempts were made at the end of sixties and beginning of seventies. The main delimitation of pond culture of it was the inadequate supply of seed at that time (Hogendoorn, 1979). I n the past two decades, methods of fish seed production, intensive and pond rearing of Clarias gariepinus were developed. These studies were made mainly in Central African Republic, the Netherlands and Israel (Viveen et al., 1986). Moreover, necessary taxonomical and biological examination of the African catfish group were carried out in the same period, which revealed that Clarias lazera and Clarias gariepinus so long considered as two separate species, were same and hence they came under the s ame scientific name Clarias gariepinus (Burchell, 1822) (Janssen, 1987). Outside its natural habitat the species is cultured in cooling water of power stations in the Netherlands and also in hot springs in Hungary. The species was also introduced in Thailand, and China. At the end of 1989 the African catfish was introduced in Bangladesh from Thailand by the Ministry of Fisheries and Livestock, Government of Bangladesh. The African catfish (it is known as African magur in Bangladesh) is simil ar to a few Asian catfish species as Clarias batrachus and Clarias macrocephalus. The main distinguishing feature of the species is the shape of occipital process of skull (Figure 1).
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No Thumbnail AvailableBook (stand-alone)Training materialPlanning in government forest agencies how to balance forest use and conservation: agenda for training workshop. 1998
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No results found.The purpose of planning for forestry development is to establish a workable framework for forest use and conservation which incorporates the economic, social and environmental dimensions on a sustainable basis. The framework is about creating a shared vision of how forests will be used and protected. This can be summed up in a single central question: Trees and forests for whom and for what? The question is not new but what is new is the perception that so many different groups have an interest in the reply. Forestry planning has traditionally been mainly concerned with the production of timber for industry and other wood products, and with forest industry development. Planning for environmental goals also has a long history but was largely restricted to designated areas for exclusive conservation. National forestry development agencies were essentially responsible for the sustained yield management on protected public forest lands and for reserved forests. The term "sustained yield " was mostly limited to wood production and therefore excluded the majority of other forest products and services. Although most forestry agencies have made progress towards multiple-use management, planning remains often biased towards timber in a wide range of countries. Many of the actions taken in order to stimulate forestry development in the immediate failed to sustain the momentum of growth in the longer term. Short term achievements sometimes resulted in degradation or destruction of the stock of natural capital needed in order to maintain growth in the future or reduced options for future end uses by degrading the forest capital. -
IndexesLibrary Classified Catalogue (2)/ Bibliothèque de catalogues systématiques (2) 1948
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No results found.The Protocol of 8-9 July 1946 relative to the dissolution of the International Institute of Agriculture, transferred the functions and assets of the said Institute to FAO. Of these assets, the Library is unquestionably the most outstanding and is a lasting record of the Institute's work and its achievement in the field of agriculture. This catalogue will undoubtedly contribute towards a better knowledge of this international Library. This volume in its present form, represents the systematic card-index, by subject of the Brussels Decimal Classification, in French and English, and it's supplemented by the general alphabetical index of authors.
This is Part 2 of 4 - Books - section Pure Sciences, Applied Sciences, Hygiene, Fine Arts, Literature, History, Geography and Biography.
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Book (stand-alone)Flagship2015–16年农产品市场状况
贸易与粮食安全：更好地平衡国家重点与集体利益
2015全球农产品和粮食产品贸易已在最近几十年取得快速增长，各国作为出口或进口方越来越多地参与这一贸易进程。这种趋势预计将在今后几十年中持续。因此，贸易将在全球各区域对粮食安全的程度和性质产生越来越重要的影响。我们面临的挑战就是确保农产品贸易的扩大能对消除饥饿、粮食不安全和营养不良起到促进作用，而不是阻碍作用。 本版《农产品市场状况》旨在缓解目前各方在农产品贸易对粮食安全产生的影响以及如何管理农产品贸易以确保贸易开放度的增加能惠及所有国家等问题上出现的观点两极分化现象。本书通过就一系列话题举证和说明，努力促成各方就政策选择开展有实证依据的辩论，并在政策选择过程中努力实现必要的改进。