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Informationen zum Autor Dominic Houlihan is at the University of Aberdeen, UK; Thierry Boujard is at INRA-IFREMER, Sainte Pee sur Nivelle, France; Malcolm Jobling is at NFH, University of Tromso, Norway. Klappentext The intake of food by fishes is an area of study that is of great importance to the applied sciences of fisheries and aquaculture for a number of reasons. For example a thorough knowledge of factors influencing the ingestion of feed can lead to successful manipulation of the rearing environment of cultured fishes, thereby ensuring improved growth performance and feed utilisation, and decreasing the amount of waste (and consequent pollution) per unit of fish produced. This important book, which has arisen out of a European Union COST programme, illustrates how insights into the biological and environmental factors that underlie the feeding responses of fish may be used to address practical issues of feed management. Food Intake in Fish contains carefully edited contributions from internationally recognised scientists, providing a book that is an invaluable tool and reference to all those involved in aquaculture, especially those working in the aquaculture feed industry and scientific personnel in commercial and research aquaculture facilities. This book should also find a place on the shelves of fish biologists and physiologists and as a reference in libraries of universities, research establishments and aquaculture equipment companies. Zusammenfassung aeo comprehensive text! written by international experts aeo of huge importance to the aquaculture feed industry aeo definitive reference source for many years into the future. Inhaltsverzeichnis List of Contributors v Preface xvii 1 Feed Composition and Analysis 1 Malcolm Jobling 1.1 Introduction 1 1.2 Nutrient classes 1 1.2.1 Proteins 2 1.2.2 Lipids 4 1.2.3 Carbohydrates 6 1.2.4 Vitamins 9 1.2.5 Minerals 10 1.3 Analysis of feeds and feedstuffs 10 1.3.1 Protein analysis 13 1.3.2 Lipid analysis 14 1.3.3 Automated methods of analysis 14 1.4 Nutrient availability and feed evaluation 15 1.4.1 Nutrient absorption and digestibility 16 1.4.2 Growth trials and biological evaluation 18 1.5 Concluding comments 20 1.6 References 21 2 Feed Types, Manufacture and Ingredients 25 Malcolm Jobling, Emidio Gomes and Jorges Dias 2.1 Introduction 25 2.2 Feed types 25 2.3 Manufacture of dry feeds 26 2.3.1 Compressed pellets 29 2.3.2 Expanded pellets 29 2.3.3 Extruded pellets 29 2.3.4 Special types of feeds 30 2.4 Feed ingredients 31 2.4.1 Protein sources of animal origin 31 2.4.2 Single-cell proteins (SCPs) 33 2.4.3 Antinutritional factors (ANFs) 34 2.4.4 Plant protein sources 35 2.4.5 Lipid sources 36 2.4.6 Other ingredients 37 2.5 Feed characteristics and feed acceptability 37 2.6 Concluding comments 40 2.7 References 42 3 Techniques for Measuring Feed Intake 49 Malcolm Jobling, Denis Covès, Børge Damsgård, Henrik R. Kristiansen, Juha Koskela, Thuridur E. Petursdottir, Sunil Kadri and Olafur Gudmundsson 3.1 Introduction 49 3.2 Stomach contents analysis 49 3.2.1 Technical aspects 50 3.2.2 Applications and limitations 53 3.3 Dyestuffs and chemical markers 55 3.3.1 Technical aspects 55 3.3.2 Applications and limitations 57 3.4 Direct observation and video recording 58 3.4.1 Technical aspects 58 3.4.2 Applications and limitations 61 3.5 On-demand feeder with feed waste monitor 62 3.5.1 Technical aspects 62 3.5.2 Applications and limitations 63 3.6 X-Radiography 67 3.6.1 Technical aspects 67
