Taste preference of hybrid grouper (Epinephelus fuscoguttatus ♀ × Epinephelus lanceolatus ♂) for nucleoside and nucleotides

Leong, Seng Lim and Rian Freddie Firdaus, and Rossita Shapawi, and Gunzo Kawamura, (2017) Taste preference of hybrid grouper (Epinephelus fuscoguttatus ♀ × Epinephelus lanceolatus ♂) for nucleoside and nucleotides. Borneo Journal of Marine Science and Aquaculture, 1. pp. 39-43. ISSN 2600-8637

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Abstract

This study was conducted to determine the taste preference of hybrid grouper (Epinephelus fuscoguttatus × Epinephelus lanceolatus) for nucleoside (inosine - INO) and nucleotides (inosine-5’-monophosphate – IMP and guanosine-5’-monophosphate - GMP), which are commonly used as feeding stimulants in fish diets. Behavioural assay was conducted by feeding the fish with the agar gel pellets that contained the taste substances and observing their feeding response through video recording. Preference Index (PrfInd; minimum = 0, maximum = 1) was calculated to evaluate the fish preference for the taste substances tested. Data so collected suggested that INO, IMP, and GMP were generally preferable by the hybrid grouper. However, INO was the most potential FS for both S and L sizes (19.7 ± 1.4 g and 162.3 ± 50.5 g in BW, mean ± S.D.) hybrid grouper based on its functional dosage. In the S size fish, INO attained high PrfInd at both 0.1% and 1% (0.84 and 1) concentration levels, while IMP and GMP attained high PrfInd at 1% (both 1) but low PrfInd (0.6 and 0.13, respectively) at 0.1%. In the L size fish, INO also attained very high PrfInd at 0.01% (0.87) but IMP and GMP were not (0.13 and 0). In addition, improvement in the taste acceptance to INO of the hybrid grouper was evident in this study. The S size fish rejected INO at 0.01% (PrfInd = 0) but the L size fish accepted it very well (0.87). These results suggested that the supplementation level of INO in the practical diets for the hybrid grouper can be decreased with the fish growth during the grow-out period.

Item Type: Article
Uncontrolled Keywords: Feeding stimulants, Feed development, Feeding, Behaviour, Growth, Hybrid grouper
Subjects: S Agriculture > SH Aquaculture. Fisheries. Angling
Divisions: SCHOOL > Borneo Marine Research Institute
Depositing User: Munira
Date Deposited: 21 May 2018 05:40
Last Modified: 21 May 2018 05:40
URI: http://eprints.ums.edu.my/id/eprint/20099

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