Browsing by Author "Norhidayah Abdul Manan"

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    Study of biofloc technology on carbon sequestration and emission, water quality and health of pacific whiteleg shrimp, penaueus vannamei
    (Universiti Malaysia Terengganu, 2016-10) Norhidayah Abdul Manan
    The application of biofloc technology in aquaculture sector has increased worldwide due to its effectiveness in controlling the water quality in aquaculture system. Nonetheless, the effect from the biofloc application towards environment effect such as Greenhouse Gases emission and toward shrimp health is still dearth. Therefore, study on biofloc technology was carried out to investigate the effect of biofloc application towards carbon sequestration and emission, water quality and health of Pacific Whiteleg shrimp, Penaeus vannamei from the shrimp farm and also from hatchery. Through the effect of carbon sequestration, the highest value of carbon sink using biovolume analysis was 14923.39 μgC-1 by the Chroococcus sp. and 3778.20 μgC-1 by Oocystis sp. Through the chlorophyll analysis, the highest carbon sink come from Chl-a which the highest value is 881.33 mg/m3 from DOC91 pond. Through the effect of carbon emission, from 52 ponds studied, 27 ponds acted as the carbon sink pCO2<400μatm, 12 ponds as the potential carbon sources and 13 ponds acted as carbon sources to the atmospheres.
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    Triploid induction banan shrimp, Fenneropenaeus merguiensis (de Man, 1888) by using cold shock treatment [electronic resource]
    (Terengganu: Universiti Malaysia Terengganu, 2012) Norhidayah Abdul Manan
    A study was done to determine the optimum parameter to produce monosex culture of postlarvae in banana shrimp, Fenneropenaeus merguiensis by producing triploid larvae using cold shock treatment. In addition also to identify the effect of triploidy in reproductive performance, survival rate, growth performance and sex ratio in F. merguiensis compared to it diploid (control) besides identifying the sex external characteristic of the postlarvae.