This report summarizes the proceedings and outcomes of the “Expert workshop on local alternative ingredients, aquafeed supply and feeding management” convened in Abbassa, Egypt, from 3 to 5 December 2023. The workshop brought together acknowledged aquafeed experts from African countries, governmental agencies, universities, development organizations, private industry and farmers. The workshop was jointly organized by the FAO Fisheries and Aquaculture Division (NFI) and WorldFish Egypt and hosted by the WorldFish Centre in Abbassa, Egypt. The workshop objectives were to: i) exchange and share knowledge of the use of local alternative ingredients, aquafeed supply and feeding management; ii) showcase technological advances and innovations in local alternative ingredients, aquafeed supply and feeding management; iii) identify country-specific challenges and issues in local alternative ingredients, aquafeed supply and feeding management; iv) identify national and regional needs for technical assistance and capacity building on local alternative ingredients, aquafeed supply and feeding management; and v) recommend strategies to address identified development priorities, knowledge products on local alternative ingredients, aquafeed supply and feeding management. The workshop was divided into an overview, country presentations, technical and producer sessions. The country presentation session included presentations from Cameroon, Egypt, Ghana, Kenya, Malawi, Nigeria, United Republic of Tanzania, Uganda and Zambia. The farmers’ experiences were presented by small farmers from Egypt, Kenya, Nigeria and Sierra Leone and experiences from Egyptian aquafeed industries. Following a general plenary discussion, the participants identified seven primary issues that currently constrain aquafeed production and feeding management in African aquaculture, namely: i) limited access to information on alternative feed ingredients (availability and accessibility); ii) poor feed preparation, processing, handling and storage at the farm level; iii) inadequate monitoring of on-farm feeding and farm performances; iv) inadequate investment and operating capitals for small-scale feed producers and farmers; v) inadequate knowledge and skills of farmers and extension workers in improved farm-made feed production, feeding management and farm performances; vi) poor feed quality and availability; and vii) lack of appropriate legal and policy frameworks required for sustainable aquaculture development including quality aquafeed manufacturing. Recommendations were proposed and classified under four categories: i) governance, ii) research and development, iii) capacity building, and iv) value chain.

Tilapia Culture, Second Edition, covers the vital issues of farmed tilapia in the world, including their biology, environmental requirements, semi-intensive culture, intensive culture systems, nutrition and feeding, reproduction, seed production and larval rearing, stress and disease, harvesting, economics, trade, marketing, the role of tilapia culture in rural development and poverty eradication, and technological innovations in, and the environmental impacts of, tilapia culture. In addition, the book highlights and presents the experiences of leading countries in tilapia culture, thus making it ideal for tilapia farmers and researchers who seek the most relevant research and information. The new second edition not only brings the most updated information within each chapter, but also delivers new content on tilapia transfers, introductions and their impacts, the use of probiotics and other additives in tilapia culture, tilapia trade, including marketing, and sustainability approaches and practices, such as management practices, ecosystem approaches to tilapia culture, and value chain analyses of tilapia farming. - Presents the biology of tilapia, including taxonomy, body shapes, geographical distribution, introductions and transfers, gut morphology, and feeding habits - Covers semi-intensive tilapia culture in earthen ponds, tanks, raceways, cages, recirculating systems, and aquaponics - Provides the latest information on brood stock management, production of monosex tilapia, seed production, and larval rearing under different culture systems - Highlights the most common infectious and non-infectious diseases affecting farmed tilapia, with a full description of disease symptoms and treatment measures - Provides an in-depth exploration of tilapia economics, trade and marketing

Captive Seawater Fishes: Science and Technology Stephen Spotte "The book is clearly a labor of love, and one must admire the author's boundless enthusiasm and breadth of scholarship." —New Scientist A seamlessly clear treatise on the science and technology of maintaining seawater fishes for purposes of aquaculture and public exhibition. Captive Seawater Fishes is the first book to bring together in one volume the disciplines of seawater chemistry, process engineering, and fish physiology, behavior, nutrition, and health. Richly illustrating the interplay between living fishes and the chemical and sensory stimuli of their environment, the book details: chemical processes controlling carbonate stability in seawater; the effect of captivity on physiological processes; sensory processes of fishes, including vision, hearing, and electroreception; diseases of seawater fishes and treatment methods; and more. 1991 (0-471-54554-6) 976 pp. Surveys of Fisheries Resources Donald R. Gunderson The intensive exploitation of fisheries resources has heightened the reliance in the industry on statistical surveying as a means of monitoring the abundance and age composition of existing fish reserves. Here is the first comprehensive look at the unique challenges and problems of fisheries surveying. Covering everything from survey design, bottom trawl surveys, acoustic surveys, to egg and larval surveys and direct counts, as well as the assumptions and limitations surrounding each method, the book is an exhaustive, yet practical guide to designing accurate, cost-effective fisheries surveys. 1993 (0-471-54735-2) 256 pp. Aquatic Pollution: An Introductory Text, Second Edition Edward A. Laws Regarded as the most complete introduction available on the subject, Aquatic Pollution details the ecological principles and toxicological fundamentals behind the phenomenon as well as the latest information on the factors affecting our polluted aquatic environment. Featuring case studies and specific examples, the book systematically examines such problems as urban runoff, sewage disposal, thermal pollution, nutrient loading, industrial wastewater discharges, and oil pollution. The new Second Edition includes three new chapters on groundwater pollution. acid rain, and plastics in the sea, as well as updated and expanded information on eutrophication, pathogens in water supplies, radioactive waste disposal, toxic metals, and pesticide use. 1993 (0-471-58883-0) 611 pp.

The paper summarizes the major nutritional pathologies which have been reported in farmed fish. Morphological signs of nutrient deficiency and toxicity are presented and discussed under the following headings, 1) disorders in protein, lipid, mineral and vitamin nutrition, 2) endogenous anti-nutritional factors present in plant foodstuffs, and 3) adventitious toxic factors present in foodstuffs.

Aquaculture is an increasingly diverse industry with an ever-growing number of species cultured and production systems available to professionals. A basic understanding of production systems is vital to the successful practice of aquaculture. Published with the World Aquaculture Society, Aquaculture Production Systems captures the huge diversity of production systems used in the production of shellfish and finfish in one concise volume that allows the reader to better understand how aquaculture depends upon and interacts with its environment. The systems examined range from low input methods to super-intensive systems. Divided into five sections that each focus on a distinct family of systems, Aquaculture Production Systems serves as an excellent text to those just being introduced to aquaculture as well as being a valuable reference to well-established professionals seeking information on production methods.

This publication reviews the potential for fisheries production from irrigation canals. It deals with the subject under the following major headings: engineering aspects of irrigation systems; factors limiting fish production in canals; weed growth and associated problems in irrigation canals. Cage culture in irrigation canals is presented in case studies for Indonesia, Egypt and Thailand, and pen culture in China. Both cage and pen culture are considered to be the most suitable forms of aquaculture in irrigation canals. Fish can be profitably and successfully reared in irrigation canals to control unwanted aquatic weed growth, and there is some potential for the use of fish to control vectors and hosts of waterborne diseases. Amongst the constraints, levels of pesticides in fish tissues cultured in irrigation systems could be a problem in the development of foodfish production in irrigation canals. The major constraint to aquaculture development in such systems is that a continuous, preferably constant, flow of water is required throughout the culture period and this is not available in many irrigation systems.

Of the ingredients, fishmeal and fish oil are highly favoured for aquafeeds and aquafeed production is under increasing pressure due to limited supplies and increasing price of fishmeal and fish oil.