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Briefly answer the following questions. Your answers will be rated based on the rubrics.
What are the bases on which to select good future breeders?
What are desirable hereditary qualities typical of improved strains?
What are the basic economic parameters essential for the sustainable operation of a small fish
Demoulin, F. 1999. Guidelines for Broodstock and Hatchery Management.
The Food and
Agriculture Organization of the United Nations, Bangkok. 8 pp.
For the purpose of broodstock management, the main species can be classified according to the
• The size at maturity
• The method of reproduction (natural, semi-natural, artificial)
• The location in the pond and the feeding behavior
• The tolerance of adverse conditions
It should be noted that since fish ponds are almost all less than 1-meter-deep, the different
feeding levels probably do not exist. From all these characteristics, it appears that:
Fertilization of the pond, especially organic fertilization, is important to all species by
increasing the amount of natural food present in the pond.
Some species have the same feeding habits and therefore should not be stocked together
as they will compete for the food. If stocked together the total stocking density should be
A common stocking rate is 1,000 kg of broodfish per hectare, which means 10 kg/100 m
a rate supposes however that fish are stocked and maintained in good conditions:
Water depth is as advised previously (1 to 2.5 m) and should be kept constant throughout