Teoh Chaiw Yee
@utar.edu.my
Assistant Professor
Universiti Tunku Abdul Rahman
RESEARCH, TEACHING, or OTHER INTERESTS
Agricultural and Biological Sciences, Aquatic Science, Animal Science and Zoology, General Agricultural and Biological Sciences
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Xin Yan Ku, Phek Jin Kwong, Chaiw Yee Teoh, Mohammad Mijanur Rahman, and Fakar Fariz
ResearchersLinks Ltd
Inn Suang Lier, Mei Kying Ong, Siew Yoong Leong, and Chaiw Yee Teoh
Elsevier BV
Inn Suang Lier, Mei Kying Ong, Siew Yoong Leong, and Chaiw Yee Teoh
AIP Publishing
Chaiw Yee Teoh, Wey-Lim Wong, and Sheng-Haur Kelvin Chong
Academy of Sciences Malaysia
A 63 days feeding trial was conducted to evaluate the effect of live mealworm feeding on the productivity of giant freshwater prawn (GFP), Macrobrachium rosenbergii. Three dietary treatments were used in this study: Treatment 1 (T1), commercial prawn feed (control); Treatment 2 (T2), combination of commercial prawn feed and live mealworm; Treatment 3 (T3), live mealworm, were fed to randomly assigned duplicate groups of the GFP. Results showed that GFP in T3 recorded the highest body weight gain (295%), followed by those with T2 and the lowest in T1, despite not significantly different (p>0.05). GFP fed with T1 (88%) showed lower survival rate than those fed with T2 and T3 which may be ascribed to the inferior water quality. Besides, T3 resulted in better feed conversion ratio (1.66) despite no significant difference was observed. Noteworthy, the feeding cost of T1 (RM0.018 g of prawn-1) was significantly lower as compared to T2 and T3, but live mealworm feeding could be more cost-effective for longer culture period. Therefore, live mealworm could be a potential alternative to commercial prawn feed for GFP farming.
W. C. Quah, L. L. Chew, V. C. Chong, C. Chu, C. Y. Teoh, and A. L. Ooi
Springer Science and Business Media LLC
Chaiw-Yee Teoh and Yin-Ying Wong
Springer Science and Business Media LLC
Yu-Bin Chan, Yoke-Leng Sim, and Chaiw-Yee Teoh
AIP Publishing
Malaysian Lates calcarifer (Asian seabass) is readily adapted to the freshwater environment and is suggested to have different long-chain polyunsaturated fatty acids biosynthetic activities compared to other marine fish. Additionally, fatty acid profiling of L. calcarifer byproducts are not yet studied. Hence, in this study, fatty acid compositions of L. calcarifer byproducts (head, liver and intestine) were analyzed. The byproducts were excised and the lipid was extracted using modified Bligh and Dyer method and converted into fatty acid methyl ester before being analyzed by gas chromatography coupled with mass spectrometry. In all byproducts analyzed, major class of fatty acid was saturated fatty acids with the range of 48.25 ± 0.99% – 64.31 ± 0.79%, followed by monounsaturated fatty acids within the range 18.94 ± 1.47% – 40.19 ± 1.00% and the least was polyunsaturated fatty acids with the range between 6.08 ± 0.47% – 21.23 ± 1.20%. The C16:0, C18:1n9(c), C20:5n3(c), C22:6n3(c) and C18:2n6(c) were found to be predominant fatty acids in byproducts. Interestingly, L. calcarifer head has the highest and lowest content of omega-3 fatty acids and omega-6 fatty acids, respectively, with the amount of 16.46 ± 1.06% and 4.77 ± 0.40%. In contrast, omega-3 fatty acids were not detected from intestine, with omega-6 fatty acids appeared in greatest amount of 11.56 ± 0.11%. Such kind of useful fatty acids can be utilized to increase the nutritional value of animal feeds upon refinery.
Wei-Ling Chee, Giovanni M. Turchini, Chaiw-Yee Teoh, and Wing-Keong Ng
Elsevier BV
Wee-Ming Ti, Mei-Kying Ong, and Chaiw-Yee Teoh
Elsevier BV
Wing-Keong Ng, Chik-Boon Koh, Chaiw-Yee Teoh, and Nicholas Romano
Elsevier BV
Young-Chul Kim, Nicholas Romano, Kuan-Shern Lee, Chaiw-Yee Teoh, and Wing-Keong Ng
Hindawi Limited
A feeding trial was conducted to investigate the complete substitution of either fish oil (FO) or squid liver oil (SLO) with crude palm oil (CPO), canola oil (CO) sunflower oil (SFO) or linseed oil (LO), as the sole added lipid source in diets fed to triplicate groups of giant freshwater prawn, Macrobrachium rosenbergii (initial weight = 0.42 ± 0.01 g) for 6 weeks. Prawns fed the CO or SLO diets showed significantly higher (P 0.05) from those fed the FO diet, although all VO-based diets led to a significantly lower docosahexaenoic acid content compared with prawns fed the FO or SLO diet. The whole-body total carotenoid content was significantly lower for prawns fed the SLO diet compared with prawns on the CO or CPO diets. The successful use of VO instead of marine-based oils in prawn diets will likely reduce feeding costs associated with M. rosenbergii aquaculture.
Chaiw-Yee Teoh and Wing-Keong Ng
American Chemical Society (ACS)
The present study aimed to investigate the potential role of dietary petroselinic acid (PSA) in enhancing the n-3 long-chain polyunsaturated fatty acid (LC-PUFA) content in fish tissues. Three isolipidic casein-based diets were formulated to comprise graded levels of PSA (0, 10, or 20% of total fatty acid) with the incremented inclusion of coriander seed oil. Fish growth and nutrient digestibility were not significantly (P > 0.05) influenced by dietary PSA level. In general, dietary PSA affected the fatty acid composition of tilapia tissues and whole-body, which reflected dietary fatty acid ratios. Dietary PSA significantly (P < 0.05) increased β-oxidation, particularly on α-linolenic acid (18:3n-3) and linoleic acid (18:2n-6). This study provided evidence that PSA, a pseudoproduct mimicking the structure of 18:3n-6, did reduce Δ-6 desaturation on 18:2n-6 but, contrary to popular speculation, did not stimulate more Δ-6 desaturase activity on 18:3n-3. The overall Δ-6 desaturase enzyme activity may be suppressed at high dietary levels of PSA. Nevertheless, the n-3 and n-6 LC-PUFA biosynthesis was not significantly inhibited by dietary PSA, indicating that the bioconversion efficiency is not modulated only by Δ-6 desaturase. The deposition of n-3 LC-PUFA in liver and fillet lipids was higher in fish fed PSA-supplemented diets.
Chaiw-Yee Teoh, Giovanni M. Turchini, and Wing-Keong Ng
Elsevier BV
Chaiw-Yee Teoh, Giovanni M. Turchini, and Wing-Keong Ng
Elsevier BV
Chaiw-Yee Teoh, Giovanni M. Turchini, and Wing-Keong Ng
Elsevier BV