Norfazreena M. Faudzi and Muhammad I. Sobri and Rafidah Othman and Fui, F. Ching and Sitti Raehanah M. Shaleh (2021) Water temperature and stocking density for longhour transportation of hybrid grouper Epinephelus fuscoguttatus x E. lanceolatus. International Journal of the Bioflux Society, 14. pp. 1098-1106. ISSN 1844-9166 (P-ISSN) , 1844-8143 (E-ISSN)
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Water temperature and stocking density for longhour transportation of hybrid grouper Epinephelus fuscoguttatus x E. lanceolatus.pdf Download (41kB) |
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Water temperature and stocking density for longhour transportation of hybrid grouper Epinephelus fuscoguttatus x E. lanceolatus1.pdf Restricted to Registered users only Download (89kB) |
Abstract
This study aims to investigate the effect of water temperature and stocking density in a longhour transportation of hybrid grouper [tiger grouper (Epinephelus fuscoguttatus) x giant grouper (E. lanceolatus)]. A factorial design of three different water temperature levels (16, 18 and 21°C) and three different stocking density levels (120, 180 and 240 g L -1 ) was tested in this experiment. The experiment was conducted using a 10 L rectangular aquarium, equipped with a water chiller and aeration to maintain the water temperature at the required level. The hybrid grouper (average body weight: 5.11±0.34 g) were placed in each aquarium with different stocking density levels for a 12-hour period. The results show that the survival of fish was significantly lower (p < 0.05) at a lower water temperature level (16°C; 50.2%), while there is no significant difference for the other temperature levels considered, 18 and 21°C. The results also show that the lowest water temperature had a significantly (p < 0.05) lower pH value in each stocking density. The glycogen content in fish liver was significantly higher (p < 0.05) at a low water temperature and low stocking density. A similar trend can be observed on the dissolved oxygen of water during the experiment. Moreover, the ammonia concentration was significantly (p < 0.05) higher at a higher water temperature and a higher stocking density. The findings in the present study suggest that hybrid grouper can be economically transported for a long hour journey at a high stocking density (240 g L -1 ), with a water temperature level between 18 to 21°C.
| Item Type: | Article |
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| Keyword: | Tiger grouper , Giant grouper , Water quality , Survival rate , Glycogen content |
| Subjects: | Q Science > QL Zoology > QL1-991 Zoology > QL605-739.8 Chordates. Vertebrates > QL614-639.8 Fishes S Agriculture > SH Aquaculture. Fisheries. Angling > SH1-691 Aquaculture. Fisheries. Angling > SH20.3-191 Aquaculture > SH151-179 Fish culture |
| Department: | INSTITUTE > Borneo Marine Research Institute |
| Depositing User: | SITI AZIZAH BINTI IDRIS - |
| Date Deposited: | 30 Mar 2022 17:25 |
| Last Modified: | 30 Mar 2022 17:25 |
| URI: | https://eprints.ums.edu.my/id/eprint/32174 |
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