COVER
A HANDBOOK OF DISEASES OF
CULTURED CLARIAS (PLA DUK) IN THAILAND

CONTENTS

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CONTENTS

FOREWORD

ACKNOWLEDGEMENTS

Chapter 1 THE CULTURED CLARIIDS

Chapter 2 HUSBANDRY OF CLARIAS IN RELATION TO DISEASE

Chapter 3 INFECTIOUS DISEASES

Chapter 4 NUTRITIONAL DISEASE

Chapter 5 WATER MANAGEMENT FOR DISEASE CONTROL

Chapter 6 PROPHYLAXIS AND THERAPY

APPENDIX 1 CONVERSION OF UNITS

2 WATER QUALITY ANALYSES

3 FOOD CONVERSION RATIO

4 SPECIFIC GROWTH RATE

5 HYGIENE AND DISINFECTION

6 EXAMPLES IN DISEASE TREATMENT

FORWORD

This handbook is a result of a programme of close collaboration between scientists in the National Inland Fisheries Institute1, Department of Fisheries, Thailand and the Institute of Aquaculture2, University of Stirling. It was made possible by the support of FAO/UNDP as part of the Pond Management Techniques and Disease Control Project (THA/75/012) which was established by the United Nations Development Programme in association with the Royal Thai Government. The Thai clarias culture industry has already developed to a remarkable degree. It is hoped that this book may help to enable this success to be enhanced even further, but it must be emphasis that the industry is very young and scientific study of the diseases found in clarias culture is even younger. It is likely that in the future many more conditions will come to light which will require study, and treatment. This handbook represents a first overview of the subject - we have much more to learn.

1 Miss Sopa Areerat, Dr. Sidthi Boonyaratpalin, Mrs. Supranee Chinabut, and Dr. Kamonporn Pawaputanon.

2 Mr. Ian H. MacRae, Dr. James F. Muir, Dr. Randolph H. Richards, Dr. Ronald J. Roberts and Dr. Christina Summerville.

ACKNOWLEDGEMENTS

The authors would like to thank Mr. Vanich Vareekul, Director of the National Inland Fisheries Institute, and all of our colleagues in both Institutes for their assistance throughout both the survey work and the production of this handbook.

The programme would have been impossible without the generous support of FAO/UNDP and of the Royal Thai Government. The work of the Institute of Aquaculture is supported by the Overseas Development Administration of the British Foreign and Commonwealth Office whose help is also gratefully acknowledged.