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This type of hatchery is relatively larger than the small-scale hatchery in terms of capital investment, hatchery size, production capability and scale of operation. While hatchery management is somewhat similar to that of small-scale hatchery, the production capability range between 10-20 million postlarvae per annum and is operated by about 3 technical personnel and 3-4 labourers. This type of hatchery is usually put up by small cooperatives to supply the required shrimp f ry to its member growers. Private enterpreneurs or government agencies may also establish hatchery of such operational scale to produce fry for safe or distribution to the growers (Kungvankij et al., 1986).
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