Production efficiency of Asian seabass (Lates calcarifer) culture integrated with sandfish (Holothuria Scabra) and tropical eelgrass (Enhalus acoroides)
As aquaculture production increases, integrated aquaculture of organisms from different trophic level is seem to be a way to mitigate the problem of water quality and production efficiency. Hence, an experiment with four treatments was carried out with a land-based recirculating aquaculture syste...
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| Format: | Academic Exercise |
| Language: | English |
| Published: |
2015
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| Subjects: | |
| Online Access: | http://eprints.ums.edu.my/18521/ http://eprints.ums.edu.my/18521/1/Production%20efficiency%20of%20Asian%20seabass.pdf |
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| Summary: | As aquaculture production increases, integrated aquaculture of organisms from different
trophic level is seem to be a way to mitigate the problem of water quality and production
efficiency. Hence, an experiment with four treatments was carried out with a land-based
recirculating aquaculture system by integrating three components, i.e., Asian seabass
(lates calcarifer), Sandfish (Holothuria scabra) and Tropical eelgrass (Enhalus acoroides).
Treatment 'Control' has only Asian sea bass, 'With Sandfish' has Asian sea bass and
Sandfish, 'With Tropical eelgrass' has Asian sea bass and Tropical eelgrass and 'All' has
Asian sea bass, Sandfish and Tropical eelgrass. Treatment 'All' observed the best survival
(100%±0.0), weight gained (82.79%±8.84) and feed conversion ratio (1.94±0.06) of
Asian seabass. Similarly, Sandfish also recorded higher weight gained in treatment 'All'
(102.55%±36.56) compared with treatment 'With Sandfish' (78.21±33.60). This is
because Sandfish also excrete ammonia, negatively affecting water quality. Tropical
eelgrass in treatment 'All' and 'With Tropical eelgrass' showed inconclusive result as the
leave length grown does not reflect the dry weight of the leaves. Although there is no
difference in water quality parameters (ammonia, nitrate, nitrite and phosphate), chronic
exposure to adverse water quality is most likely to be the cause that results in disease
outbreak and thus 100% mortality of Asian sea bass in 'Control'. Even though
bioremediation of aquaculture waste water can yet to be proven, integrated aquaculture
with Asian sea bass, Sandfish and Tropical eelgrass is deemed possible and superior to
other form of integration. |
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