Trout farming handbook

Trout farming handbook

Aquaculture, 60 (1987) 85 Elsevier Science Publishers B.V., Amsterdam 85 - Printed in The Netherlands Book Review TROUT FARMING Trout Farming Ha...

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Aquaculture, 60 (1987) 85 Elsevier Science Publishers B.V., Amsterdam

85 -

Printed

in The Netherlands

Book Review

TROUT FARMING

Trout Farming Handbook, 4th Edition_. Stephen Drummond Sedgewick. Fishing News Books Ltd., Farnham, Surrey, Great Britain, 1985. 160 pp., 48 illus., Price !ClO,ISBN 0-85238-135-2. This is the fourth edition of the highly popular Trout Farming Handbook which first appeared in 1973. Over the years much of the content has changed, particularly in the latter half of the book, and many of these chapters reflect the changing times that trout farmers find themselves in. The book carries two introductory chapters on the life history of the rainbow trout and on the range of rearing methods (ponds, tanks, cages) before going. on to consider in greater detail hatching and fry production, disease, hygiene, food and feeding, broodstock management and trout farming in saltwater and freshwater cages. The production of fish for angling, pollution from fish farms, and aspects of design and fish processing (packing, freezing, smoking, etc.) are also considered. A chapter on markets and profitability and an index conclude the book. The book is attractively laid out, with numerous illustrations and tables of, on the whole, useful information. There are few typesetting errors (e.g. “grp” instead of group, line 29, p. 107) as we would expect for a book in its fourth edition. Some of the information, however, is rather odd: why, for instance, are the values for dissolved oxygen concentrations at different temperatures (Table 1) given in parts per 100 OOO?Some of the sections tend to either underestimate or ignore the problems that can occur. For example, the section on siting of freshwater cages (p. 121) ignores the fact that there are methods available to help avoid problems of over-production at freshwater cage sites. One wonders why the graph of oxygen consumption versus body weight and temperature which appeared in earlier editions has been omitted. Also, the effluent separator (Fig. 35 ) is still in a rather rudimentary stage of development and much larger diameter designs may be necessary to reduce solid waste loadings significantly. These, however, are relatively minor quibbles. Whilst several themes are far better covered in more detailed texts (e.g. disease), few books give as complete an overall introduction to trout farming. It could thus be recommended as a low cost primer to anyone considering rearing trout. M.C.M. BEVERIDGE and L.G. ROSS Institute of Aquaculture, University of Stirling, Stirling FK9 4LA (Great Britain)