Pusat Pengajian Sains Kajihayat - Tesis

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Evaluation Of The Role Of Arbuscular Mycorrhizal Fungi In Enhancing Ground Cover Plant Responsiveness, Propagation And Growth Performance Of Okra (Abelmoschus Esculentus L.)
(2025-09)
Hassan, Nurul Aziera
Arbuscular mycorrhizal fungi (AMF) are known as bio-fertilizers because they are able to support plant nutrient uptake especially P. The compatibility of the AMF-plant interaction also benefits the abundance of AMF propagules in the soil. However, studies on plants in Malaysia to determine the plants AMF status and assess their level of responsiveness towards AMF are insufficient. Therefore, this study was conducted to assess the level of plant responsiveness towards AMF using ground cover plants (GCP) and employed the selected GCP species as AMF trap plants to propagate AMF propagules in the soil. Plant and soil samples were taken from 24 total quadrats from four sampling sites.
An Assessment Of The Terrestrial Large Mammals Population Abundance, Conservation Status And Challenges Of Management In A West African Protected Area
(2025-09)
Lawal, Mohammed Umar
The global decline of large mammals is widely acknowledged as a major threat to ecosystems worldwide. In West and Central Africa, terrestrial large mammals are particularly threatened by trade and consumption. However, quantitative and scientific information on the population status and conservation of terrestrial large mammals within protected areas in Nigeria is either scarce or extremely limited. This research seeks to help close that information gap. In this study, the abundance, conservation status, seasonal population distribution, and the influence of poaching and vegetation factors on terrestrial large mammals were assessed in Old Oyo National Park, Nigeria, in 2022.
Effects Of Irrigation And Fertilizer Application On Water And Fertilizer Use And Soil Environment In Greenhouse Tomato
(2025-08)
Lyu, Xiaona
Efficient water and fertilizer management is crucial for optimizing greenhouse tomato (Solanum lycopersicon L.) production while mitigating environmental impacts such as soil degradation, nutrient loss, and pollution. This study aims to: (1) study the effects of water and fertilizer application patterns on growth, physiology, water consumption, yield, fruit quality, soil nutrients and microbial environment; (2) evaluate the response of the nutrient absorption of various parts of greenhouse tomato under different application of water and fertilizer; (3) propose the optimal combination of irrigation volume and fertilizer application suitable for efficient and high-quality tomato production in greenhouses.
Systematics And Biogeography Of The Genus Chitala (Osteoglossomorpha: Notopteridae) In Malaysia Using An Integrative Approach
(2025-09)
Ruzman, Luqman Hakim
The taxonomy of the freshwater featherback fish genus Chitala (Osteoglossomorpha: Notopteridae) remains unsettled because delimiting and naming Chitala species based solely on morphology led to different hypotheses. In this study, the number and identity of Chitala species present in Peninsular Malaysia were determined by employing an integrative taxonomic approach that combines morphological characters and two mitochondrial markers: the cytochrome c oxidase subunit I (COI) and cytochrome b genes.
Influence Of Aqualase And Grobiotic@- A On Growth, Digestive Enzyme Activities, Survival And Streptococcus Faecium Resistance In Rainbow Trout (Oncorhynchus Mykiss) Juveniles
(2022-08)
Azari, Abdolhamid
The present study was carried out to investigate the effects of supplementation with a probiotic, aqualase (thepax©) and a prebiotic, grobiotic,li)- a, respectively, on rainbow trout oncorhynchus mykiss, growth and health performance, two series of experiments were conducted to evaluate the use of these supplements in a commercial trout feed (chine, iran) against fish pathogenic bacteria, streptococcusfaecium and their effects on growth performance, haematological, immunological parameters and specific enzyme activities of rainbow trout, o. Mykiss. In both experiments, blood was sampled for haematological and immunological parameters after 4, 8 and 12 weeks, respectively of feeding. At the end of the trials, gastrointestinal tract of experimental fish were removed to assay for digestive enzymes activity and determination of the total bacterial count in the intestines. In the first experiment, five diets were prepared each comprising of a control (not supplemented); 1 and 2% g-a respectively and 0.1 and 0.2% aqualase. The diets were fed twice daily to triplicate groups of 300 o. Mykiss fingerlings (average 11.30 ± 0.21g) in concrete tanks for 12 weeks. The growth performance and survival rate were significantly higher in fish maintained on the both g-a and aq treatments compared with the control. However, final weight and survival fish fed g-a2% was the highest among all the treatments tested. Haematological parameters showed no significant difference between treatments, whereas immunological parameters consisting igm (56.10 ± 3.44 mg/ml) and lysozyme (12.27 ± 0.97 mg/ml) were found significantly higher in the fish fed with supplemented g-a2% between groups

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