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Nutrition of Pond Fishes.

"Nutrition of Pond Fishes" by Balfour Hepher has been published by the Cambridge University Press, 32 East 57th Street, New York, NY 10022. The late Dr. Hepher was formerly director of the Fish and Aquaculture Research Station, Dor, Israel, and had nearly a 40-year career in the field of aquaculture, during which he pioneered some of the important concepts of fish nutrition. Rather than a practical guide, the volume is a scholarly review of fish nutrition, utilizing a multidisciplinary approach to present a comprehensive account for students and scientists.

The book is presented in two parts. Part I thoroughly reviews food requirements, starting with the balance of energy--determining the food ration--and looking at the rudiments of food ingestion, the digestive process, and absorption of foods, factors affecting digestibility, and the various digestive enzymes, gastrointestinal flora, etc. Likewise reviewed are the energy pathways--the metabolism of carbohydrates, lipids, and proteins. Other chapters look at metabolism (how fish maintain life processes, the effects of water temperature, the energy costs of movement, and the utilization of metabolizable energy for maintenance) and growth (conditions affecting growth, potential growth rates, growth on reduced food rations and a summary of dietary energy requirements). Two other chapters examine the requirements of fish for protein and the sources of protein and the need for the other essential nutrients (i.e., essential fatty acids, vitamins, minerals, etc.), and the differing needs of various species for vitamins etc.

Part II examines the sources of fish foods and their utilization--natural foods and the estimation of their contribution or consumption and their composition. Likewise, supplementary feeds and their utilization are also reviewed and discussed, including types of supplemental feeds, feeding levels, feed composition, frequency of feeding, feed utilization, and feed conversion ratios. Appendices list apparent digestibility of feed ingredients, essential amino acid composition of fish and feed ingredients, proximate analyses of natural food organisms, and feeding charts for various species. The book also includes more than 60 pages of references, a systematic index for fish, and a subject index. Hardbound, the 388-page reference volume is available from the publisher for $69.50.
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Copyright 1989 Gale, Cengage Learning. All rights reserved.

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Publication:Marine Fisheries Review
Article Type:Book Review
Date:Jan 1, 1989
Words:349
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