INDONESIA
IMPROVEMENT OF MILKFISH POND PRODUCTION IN JEPARA, CENTRAL JAVA

RESTRICTED
FI: INS/72/003/5
July 1979

IMPROVEMENT OF MILKFISH POND PRODUCTION
IN JEPARA, CENTRAL JAVA

A report prepared for the
Brackishwater Shrimp and Milkfish Culture Applied
Research and Training Project

Pedro G. Padlan
Fishery Biologist

This is one of a series of field documents prepared during the course of the UNDP project identified on the title page. The conclusions and recommendations given in the report are those considered appropriate at the time of its preparation. They may be modified in the light of further knowledge gained at subsequent stages of the project.

The designations employed and the presentation of the material in this document do not imply the expression of any opinion whatsoever on the part of the United Nations or the Food and Agriculture Organization of the United Nations concerning the legal or constitutional status of any country, territory or sea area, or concerning the delimitation of frontiers.

ACKNOWLEDGEMENTS

The Food and Agriculture Organization is greatly indebted to the Government of Indonesia, particularly the Directorate General of Fisheries, Djakarta, for all facilities and conveniences for accomodation and work at Jepara; to Mr. Alia Poernomo, Co-Manager of the Project and Director of the Shrimp Culture Research Centre, for his support and prompt action in solving problems related to conducted experiments; to Mr. Bambang S. Ranoemihardjo, his counterpart, and the members of the Fish Culture Section of the Centre for their enthusiastic and willing cooperation. Thanks are also due to the rest of the employees of the Centre.

FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS
Rome, 1979

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ACKNOWLEDGEMENTS

1. INTRODUCTION

1.1 Terms of Reference
1.2 Background Information

1.2.1 Location, Distribution and Description of Brackishwater Fishponds in Jepara
1.2.2 Weather Conditions
1.2.3 Tides and Sea Water Conditions
1.2.4 Brackishwater Fishpond Production, Jepara Area
1.2.5 Milkfish Culture in Jepara
1.2.6 Experiment Ponds of the Shrimp Culture Research Centre, Jepara

2. FIELD TRIALS AND RESULTS

2.1 Nursery Management, Rearing of Milkfish Fry, Shrimp Culture Research Centre, 1974–75
2.2 Rearing of Milkfish Fingerlings
2.3 Production of Marketable Milkfish

2.3.1 Testing of Improved Methods
2.3.2 Trials on Production of Marketable Milkfish

3. LABORATORY AND SMALL FIELD EXPERIMENTS

3.1 Culture of Lab-Lab Under Levels of Fertilizer Treatment
3.2 Rice Bran and Cow dung as Organic Fertilizers
3.3 Molasses as Stimulant for Lab-Lab Growth
3.4 Comparative Study on Survival and Growth of Milkfish Fry from Surabaya (E. Java) and Lassem (C. Java)
3.5 Rice Bran and Rice Bran Urea Pellets as Artificial Feed for Milkfish Fingerlings
3.6 Effects of Starvation on the Rate of Growth of Milkfish Fingerlings
3.7 Artificial Substrates as Additional Feeding Areas
3.8 Effects of Tri-phenyl-tin-acetate on Milkfish Fingerlings
3.9 On-going Experiments