Nursery production of hatchery-reared milkfish, Chanos chanos in earthen pond
Journal Title: Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society - Year 2011, Vol 4, Issue 5
Abstract
To ensure stable supply of milkfish, Chanos chanos fingerlings for stocking in ponds or cages where they will be reared until harvestable size, nursery production of hatchery-reared milkfish fry in earthen ponds and fed solely on natural food (periphyton) was developed. Trials were conducted using 500 m[sup]2 [/sup]earthen ponds during the dry and wet months. The ponds were prepared and added with fertilizers in order to enhance the production of natural food. Hatchery-reared milkfish fry were stocked at densities ranging 20 – 39 fry/m[sup]2[/sup]. At least a month (< 40 days) after stocking, the fry reached the fingerling stage (2.59 – 4.63 g) with survival rates of 68.6% - 81.0%. There was better production during the dry months due to abundant supply of natural food, although it was also possible to obtain good production during the wet months when pond conditions are favorable. This strategy of rearing milkfish fry in nursery ponds using natural food could be a viable and inexpensive technique in maintaining sustainable milkfish aquaculture.
Authors and Affiliations
Cecilia Jaspe, Christopher Caipang
Keywords
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