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Effect of dietary astaxanthin and vitamin A on the reproductive performance of Penaeus monodon broodstock
(Cambridge University Press, 1998)
The reproductive performance of pond tiger shrimp given astaxanthin (100 mg·kg<sup>−1</sup>) and/or vitamin A (20 000 IU·kg<sup>−1</sup>) for 61 d in tanks was assessed in a 2 × 2 factorial experiment in a completely ...
Bacterial diseases in shrimp (Penaeus monodon) culture in the Philippines
(Japanese Society of Fish Pathology, 1998)
The hatchery system for Penaeus monodon evolved from the Japanese community culture system to the modified Galveston method and this shift in culture technique triggered the outbreak of diseases due to opportunistic bacteria. ...
Sensitivity of grouper Epinephelus coioides eggs to handling stress at different stages of embryonic development
(Society of Israeli Aquaculture and Marine Biotechnology, 1998)
The sensitivity of grouper Epinephelus coioides eggs to handling stress at different stages of embryonic development was investigated. Naturally-spawned grouper eggs in floating net cages were collected and handled at the ...
Survival of Penaeus monodon postlarvae and juveniles at different salinity and temperature levels.
(Society of Israeli Aquaculture and Marine Biotechnology, 1998)
Penaeus monodon postlarvae (PL1, PL5, PL10, and PL15) and juveniles (0.2 and 2 g mean weights) were acclimated gradually within 6 h to test temperatures of 22°, 28°, and 33°C. After 24 h, the postlarvae were abruptly ...
Partial replacement of Artemia sp. by the brackishwater cladoceran, Diaphanosoma celebensis (Stingelin), in the larval rearing of sea bass, Lates calcarifer (Bloch)
(Society of Israeli Aquaculture and Marine Biotechnology, 1998)
A feed experiment was conducted to test the brackishwater cladoceran, Diaphanosoma celebensis, as a partial or complete substitute for Artemia in the larval rearing of the sea bass, Lates calcarifer. The cladoceran was fed ...
Thyroid hormones promote early metamorphosis in grouper (Epinephelus coioides) larvae
(Academic Press, 1998)
The response of grouper larvae to the thyroid hormones, thyroxine (T<sub>4</sub>) and triiodothyronine (T<sub>3</sub>), was examined. Two-, 3-, and 4-week-old grouper larvae were reared in seawater containing either ...
Culture of finfish in netcages
(Society of Aquaculture Engineers of the Philippines, Inc., 1998)
This report consists of two parts, the first deals on the cage culture of grouper, and the second on cage culture of tilapia. The culture of groupers is done in netcages set in marine waters, while tilapia is raised in ...
The economics and marketing of cage-raised finfish and pen-raised mudcrab
(Society of Aquaculture Engineers of the Philippines, Inc., 1998)
As part of the technology verification exercise for technologies developed through research, the economics and marketing aspects were investigated before such technologies can be extended to industry practitioners. These ...
Economic analysis of stake and rack-hanging methods of farming oysters (Crassostrea iredalei) in the Philippines
(Elsevier, 1998)
The cost efficiency of stake and rack-hanging methods of farming oysters are compared. Annual costs and returns data for both methods were obtained from a socioeconomic survey conducted in 1991 at the Aquaculture Department of the Southeast Asian Fisheries Development Center (SEAFDEC/AQD). On average, 14 kg m<sup>−2</sup> (shell-on) and 22 kg m<sup>−2</sup> (shell-on) were produced using the stake and rack-hanging methods, respectively. The translog cost function for 58 oyster farms was estimated using iterative seemingly unrelated regression (SUR). Statistical analysis indicates that the higher production from the rack-hanging method is significantly different (α=0.10) from the production using the stake method. The cost-efficient method varied based on production levels. At output levels less that 9044 kg (shell-on), the rack-hanging method had lower average cost per unit, and for higher production levels the stake method had the lower average costs. Similar conclusions were drawn from the marginal cost analysis. Results imply when production is less than 9044 kg, then the most efficient technology is the rack-hanging method and if production is greater than 9044 kg, the most efficient method is the stake method....
Incorporation of fatty acids from dietary neutral lipid in eye, brain and muscle of postlarval turbot fed diets with different types of phosphatidylcholine
(Springer, 1998)
Previous results demonstrated the stimulating effect of soybean phosphatidylcholine (PC) on the utilization of dietary neutral lipid in larval and postlarval fish. The present study further investigated the effect of the ...