Effect Of Varying Dietary Lipid Levels In Snakehead Broodstock, Channa Striata On Egg, Larval Quality And Ontogenic Development Of Digestive Tract

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dc.contributor.authorKeong, Hui Lay
dc.date.accessioned2019-08-29T01:56:59Z
dc.date.available2019-08-29T01:56:59Z
dc.date.issued2017-07
dc.description.abstractSnakehead or Channa striata, a freshwater fish well known for its nutraceutical values for wound healing is popular amongst the locals and also in Southeast Asia. Currently collection of seeds from the wild is declining due to over harvesting and environmental pollution. Artificial breeding is a feasible option practiced by commercial farms to meet to its high demand. However, traditionally trash fish is usually fed to snakehead broodstock which result in low quality seed production. Therefore good management of broodstock nutrition in captivity is significant. A study was carried out to determine the optimum lipid level for Channa striata broodstock that will produce high quality larvae. The study was divided into two parts, i) to assess the physical and chemical qualities of the larvae; ii) to observe the ontogenic development of digestive tract and enzyme activities in response to the different diets. Triplicate groups of Channa striata adults (average weight 176.76 ± 23.53 g) were fed for a period of three months with experimental diets containing 100, 140 and 180 g lipid kg-1 diet, respectively. Significantly highest eggs (1.4 ± 0.01 mm) and larval (15.5 ± 0.39 mm) size at 15DAH were obtained from broodstock fed with 180 g kg-1 lipid diet. However, by 20DAH no significant difference in weight and length of larvae were observed from broodstock fed with 140 g kg-1 and 180 g kg-1 diets. Hatching rate of Channa striata eggs was significantly highest (59.75 ± 6.01%) from 180 g kg-1 fed broodstock at 25°C water temperature, while higher water temperature of 30°C and 35°C resulted in hatching rate exceeding 90% for the 140 g kg-1 and 180 g kg-1 diets.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/8724
dc.language.isoenen_US
dc.publisherUniversiti Sains Malaysiaen_US
dc.subjectEffect of varying dietary lipid levels in Snakehead Broodstocken_US
dc.subjectlarval quality and ontogenic development of digestive tracten_US
dc.titleEffect Of Varying Dietary Lipid Levels In Snakehead Broodstock, Channa Striata On Egg, Larval Quality And Ontogenic Development Of Digestive Tracten_US
dc.typeThesisen_US
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