Proceedings of a Workshop on the Development of a Genetic Improvement Program for African Catfish Clarias Gariepinus PDF Download

Author: Raoul W. Ponzoni
Publisher: WorldFish
ISBN: 9832346681
Category : Clarias gariepinus
Languages : en
Pages : 138

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Author: Trygve Gjedrem
Publisher: Springer Science & Business Media
ISBN: 9781402033414
Category : Science
Languages : en
Pages : 386

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Book Description
Although aquaculture as a biological production system has a long history, systematic and efficient breeding programs to improve economically important traits in the farmed species have rarely been utilized until recently, except for salmonid species. This means that the majority of aquaculture production (more than 90 %) is based on genetically unimproved stocks. In farm animals the situation is vastly different: practically no terrestrial farm production is based on genetically unimproved and undomesticated populations. This difference between aquaculture and livestock production is in spite of the fact that the basic elements of breeding theory are the same for fish and shellfish as for farm animals. One possible reason for the difference is the complexity of reproductive biology in aquatic species, and special consideration needs to be taken in the design of breeding plans for these species. Since 1971 AKVAFORSK, has continuously carried out large scale breeding research projects with salmonid species, and during the latest 15 years also with a number of fresh water and marine species. Results from this work and the results from other institutions around the world have brought forward considerable knowledge, which make the development of efficient breeding programs feasible. The genetic improvement obtained in selection programs for fish and shellfish is remarkable and much higher than what has been achieved in terrestrial farm animals.

Author: Trygve Gjedrem
Publisher: Springer Science & Business Media
ISBN: 9048127734
Category : Science
Languages : en
Pages : 221

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The foundation of quantitative genetics theory was developed during the last century and facilitated many successful breeding programs for cultivated plants and t- restrial livestock. The results have been almost universally impressive, and today nearly all agricultural production utilises genetically improved seed and animals. The aquaculture industry can learn a great deal from these experiences, because the basic theory behind selective breeding is the same for all species. The ?rst published selection experiments in aquaculture started in 1920 s to improve disease resistance in ?sh, but it was not before the 1970 s that the ?rst family based breeding program was initiated for Atlantic salmon in Norway by AKVAFORSK. Unfortunately, the subsequent implementation of selective breeding on a wider scale in aquaculture has been slow, and despite the dramatic gains that have been demonstrated in a number of species, less than 10% of world aquaculture production is currently based on improved stocks. For the long-term sustainability of aquaculture production, there is an urgent need to develop and implement e- cient breeding programs for all species under commercial production. The ability for aquaculture to successfully meet the demands of an ever increasing human p- ulation, will rely on genetically improved stocks that utilise feed, water and land resources in an ef?cient way. Technological advances like genome sequences of aquaculture species, and advanced molecular methods means that there are new and exciting prospects for building on these well-established methods into the future.

Author: John Ruane
Publisher: Food & Agriculture Organization of the UN (FAO)
ISBN: 9789251078778
Category : Animal biotechnology
Languages : en
Pages : 0

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This book documents a unique series of 19 case studies where agricultural biotechnologies were used to serve the needs of smallholders in developing countries. They cover different regions, production systems, species and underlying socio-economic conditions in the crop (seven case studies), livestock (seven) and aquaculture/fisheries (five) sectors. Most of the case studies involve a single crop, livestock or fish species and a single biotechnology. Prepared by scientists and researchers who were directly involved in the initiatives, the authors were able to provide an insider's guide to the background, achievements, obstacles, challenges and lessons learned from each case study.

Author: Simon Goddek
Publisher: Springer
ISBN: 3030159434
Category : Science
Languages : en
Pages : 620

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This open access book, written by world experts in aquaponics and related technologies, provides the authoritative and comprehensive overview of the key aquaculture and hydroponic and other integrated systems, socio-economic and environmental aspects. Aquaponic systems, which combine aquaculture and vegetable food production offer alternative technology solutions for a world that is increasingly under stress through population growth, urbanisation, water shortages, land and soil degradation, environmental pollution, world hunger and climate change.

Author: Douglas Tave
Publisher: Food & Agriculture Org.
ISBN: 9789251043400
Category : Business & Economics
Languages : en
Pages : 138

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A manual dealing primarily with the problems caused by unwanted inbreeding in cultured fish populations, describing management techniques for preventing or minimising inbreeding, and also how inbreeding can be used to improve captive populations of fish

Author: G. Cliff Lamb
Publisher: Springer Science & Business Media
ISBN: 1461488877
Category : Science
Languages : en
Pages : 255

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​​​​​​​​​​​This book addresses the impacts of current and future reproductive technologies on our world food production and provides a significant contribution to the importance of research in the area of reproductive physiology that has never been compiled before. It would provide a unique opportunity to separate the impacts of how reproductive technologies have affected different species and their contributions to food production. Lastly, no publication has been compiled that demonstrates the relationship between developments in reproductive management tools and food production that may be used a reference for scientists in addressing future research areas. ​During the past 50 years assisted reproductive technologies have been developed and refined to increase the number and quality of offspring from genetically superior farm animal livestock species. Artificial insemination (AI), estrous synchronization and fixed-time AI, semen and embryo cryopreservation, multiple ovulation and embryo transfer (MOET), in vitro fertilization, sex determination of sperm or embryos, and nuclear transfer are technologies that are used to enhance the production efficiency of livestock species.

Author: Randall E. Brummett
Publisher: Routledge
ISBN: 1134923678
Category : Nature
Languages : en
Pages : 288

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Aquaculture technology has been evolving rapidly over the last two decades, led by an increasingly skilled cadre of researchers in developing countries. Rather than copying, or adapting work done in industrialized countries to their situations, these scientists are moving aquaculture research out of the box to explore species and production systems relevant to their natural resources, economies and social institutions. Studies from India, Latin America, the Middle East and Africa are highlighted in this collection of papers, covering the entire gamut of aquaculture science from comparison of tilapia breeds, novel feed ingredients for indigenous species, improving disease resistance, water-use efficiency, traditional farming systems, spatial planning and economics. More than a how-to book, this volume introduces the researchers and institutions leading the development of aquaculture as it expands into new frontiers. This book was based on a special issue of the Journal of Applied Aquaculture.

Author: Zhenhua Ma
Publisher: Springer Nature
ISBN: 9811917124
Category : Science
Languages : en
Pages : 207

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This book highlights the ontogenetic development of larval T. ovatus, provides a comprehensive overview of larval rearing of this species. It focuses on the physiological and molecular changes during the early ontogeny of T. ovatus and hatchery and nursery practices. The first seven chapters update the recent development in the hatchery technology in T. ovatus, including feed and feeding, environmental manipulation, hatchery management, and fingerlings in transportation. Chapter eight and onwards decode the possible molecular mechanisms underlying fish development and response to environmental changes and discuss the transcription and expressions of growth and development-related genes in T. ovatus. The last chapters discuss the functional feed additives to the diet and antibiotic usage of T. ovatus juveniles. This book is a valuable resource for researchers, practitioners and students in the aquaculture industry and related fields.

Author: T. V. R. Pillay
Publisher: Wiley
ISBN: 9780852382028
Category : Technology & Engineering
Languages : en
Pages : 600

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Book Description
The importance of aquaculture is now established, in the context of global food production, aquatic resource management and socioeconomic development of rural areas. Remarkable advances are being achieved on an increasing scale, and development and donor agencies now consider aquaculture to be a priority area. Aquaculture has become a prime subject for research internationally and it is expected to overtake capture as a source of several high-valued species of fish and shellfish within a decade or so. This major work by a leading world authority is now available in paperback and will become THE major text for students of aquaculture It is fully comprehensive and covers all aspects of aquaculture, including all the major species of fish, shellfish and edible seaweed.