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No Thumbnail AvailableProjectCysts production of Artemia salina in salt ponds in Thailand 1979
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No results found.Techniques for culturing aquatic animals in freshwater, brackishwater and salt water have been improving rapidly. The feed for aquatic animals such as fish, shrimp, crab, etc. during their larval stages is therefore of vital importance. Up to now, the feeds used are planktonic plants and animals, e.g., diatoms, rotifiers, copepods, etc. which are reared in the hatchery or collected from natural breeding grounds. These practices are greatly handicapped by difficulties in obtaining sufficient quan tities of these foods. Artemia salina is one of the most important feeds. It has to be imported in large quantities from abroad. It is imported as dry Artemia cysts, preserved in vacuum packed tins in such a way that they will last for years. Subsequently, these cysts can be hatched whenever deemed necessary in the required quantity. However, the cost of imported cysts is extremely high. An experimental, research, training and development project for freshwater prawn culture at the Chacheongsa o Fisheries Station has been in operation for over 3 years. This project requires an enormous quantity of Artemia for its work. The Station has developed methods of utilizing Artemia to the fullest by conducting research in techniques for its preservation and establishing technical procedures for a new local Artemia rearing industry to replace the necessity of importing cysts. This report will deal briefly with the value of Artemia production and includes the techniques used and results of exp eriments on cyst production in Thai salt ponds. -
No Thumbnail AvailableProjectThe culture and use of brine shrimp, Artemia salina, as food for hatchery-raised larval prawns, shrimps and fish in Southeast Asia 1978
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No results found.This paper is based on consultancy tours made in the Philippines, Thailand and Indonesia in Southeast Asia. These extended in intermittent periods from June 1976 to November 1978. Four visits were made to the Philippines where work was mainly done with the Aquaculture Department of the Southeast Asian Fisheries Development Center (SEAFDEC) and in Thailand and Indonesia with ongoing FAO/UNDP projects. The work in these countries varied from assistance on the effective use of acquired Artemia sali na in fish hatcheries to raising it in pilot-scale raceways and also initiation of trial cultures in natural saline earth ponds for the production of cysts. -
No Thumbnail AvailableProjectAn improved technique for decapsulation and preservation of Artemia cysts (brine shrimp eggs) developed at the Chachoengsao Fisheries Station 1979
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No results found.Decapsulation of brine shrimp eggs was originally carried out with sodium hydroxide and sodium hypochlorite at the Chacheongsao Fisheries Station. The cost of decapsulation by that technique was estimated at B300/kg. of brine shrimp eggs. A modified technique has been developed whereby decapsulation is conducted by using calcium oxide and calcium hypochlorite as stimulating agents. Promising results were achieved with the same degree of success as with the former technique. However, the latest t echnique is better because the cost of decapsulation can be reduced from B300/kg. to only B18/kg. of brine shrimp eggs.
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