http://umt-ir.umt.edu.my:8080/handle/123456789/3198 PPSPA 2026-04-05T17:01:03Z http://umt-ir.umt.edu.my:8080/handle/123456789/16415 Title: LIPID NUTRITION ON GONAD DEVELOPMENT OF MAHSSEER, Tor tambroides BROODSTOCKS Authors: MUHAMMAD ABDIH BIN YAZED 2019-06-01T00:00:00Z http://umt-ir.umt.edu.my:8080/handle/123456789/15601 Title: Lipid nutrition on gonad development of mahseer, Tor tambroides broodstocks Authors: Muhammad Abduh Bin Yazed Abstract: The present research was conducted to investigate the effects of fish oil (FO) substitutions with corn oil (CO) and lipid levels on the gonad development of Tor tambroides broodstocks via three feeding trials. The first feeding trial was conducted to examine the effects of diets containing various FO and CO ratios on female T. tambroides broodstocks. Three isonitrogenous (450 g kg-1 crude protein) and isolipidic diets (105 g kg-1 crude lipid) were formulated to contain FO and CO at ratio of 1:0 , 1:1, and 0:1, respectively and was fed to the female broodstocks for five months. Based on the gonadosomatic index (GSI), hepatosomatic index (HSI), histological observations on the gonad cell, muscle fatty acids (FA) composition, and 17β-estradiol (E2) level, fish fed with diet containing FO to CO ratio of 1:1 demonstrated higher GSI and the farthest development of gonad cell stages for female T. tambroides with ratio of n-3 to n-6 of 0.74. To further elucidate the effects of lipid on T.tambroides broodstocks, the second and third feeding trials were conducted with isonitrogenous (450 g kg-1 crude protein) diets containing 60, 82, 105 and 128 g kg-1 of lipid (0, 2.5, 5.0 and 7.5% lipid inclusion respectively) with FO to CO ratio of 1:1 on female and male T. tambroides broodstocks respectively, for five months. 2019-06-01T00:00:00Z http://umt-ir.umt.edu.my:8080/handle/123456789/14700 Title: Spatial Distribution Within Different Age Of Two Anguilla Species In Peninsular Malaysia Authors: Inn Ju, Chai Abstract: Freshwater eels are divided into tropical and temperate species based on their geographical distribution. Spatial distribution of tropical eels in Malaysia can be revealed through the analysis of migratory pattern. There are studies emphasize on the diversity data of Anguilla species in Malaysia but not their migratory patterns. The objectives of this study were to determine age by otolith annuli examination and to determine the migratory pattern of tropical eels by examining otolith strontium (Sr) to calcium (Ca) ratios using an electron probe microanalyzer (EPMA). Present study provides an insight of tropical eel migratory history and habitat preferences in Peninsular Malaysia, In this study, age of tropical eels was determined by the annual rings of otolith while their migratory patterns were determined by the Sr: Ca ratio of their otoliths that reflect eel movements among various saline environments. A total of 164 eel individuals composed of 126 Anguilla bicolor bicolor and 38 A. bengalensis bengalensis were collected from ten rivers in the states of Penang, Perak and Kedah in the northwestern Peninsular Malaysia. Migratory patterns observed among species and were divided into four contingent types: 1) Type 1, freshwater, 2) Type 2a, freshwater-favoring, 3) Type 2b, seawater-favoring and 4) Type 3, shift type. 2020-01-01T00:00:00Z http://umt-ir.umt.edu.my:8080/handle/123456789/14596 Title: The anaesthetic effects of lemongrass, cymbopogon citratus essential iol on giant freshwater prawn, macrobrachium rosenbergii Authors: Wan Noazira Binti Wan Adnan Abstract: Stress is a critical state in the phase of aquaculture management that would lead to the decrease production and eventually death. Anaesthetics are widely being used as it capable in reducing mortality through progressive loss of mobility, equilibrium and consciousness, which can facilitate husbandry activities. Thus, the aim of this study was to determine the potential of lemongrass, Cymbopogon citratus essential oil as an anaesthetic on giant freshwater prawn, Macrobrachium rosenbergii. 2019-01-01T00:00:00Z