Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
| one publication added to basket [337992] |
Water quality, animal performance, nutrient budgets and microbial community in the biofloc-based polyculture system of white shrimp, Litopenaeus vannamei and gray mullet, Mugil cephalus
Hoang, M.N.; Nguyen, P.N.; Bossier, P. (2020). Water quality, animal performance, nutrient budgets and microbial community in the biofloc-based polyculture system of white shrimp, Litopenaeus vannamei and gray mullet, Mugil cephalus. Aquaculture 515: 734610. https://hdl.handle.net/10.1016/j.aquaculture.2019.734610
In: Aquaculture. Elsevier: Amsterdam; London; New York; Oxford; Tokyo. ISSN 0044-8486; e-ISSN 1873-5622
|  |
| Trefwoorden |
Penaeus vannamei Boone, 1931 [WoRMS]; Mugil cephalus Linnaeus, 1758 [WoRMS]
Marien/Kust |
| Author keywords |
Biofloc; Integrated production; Microbial community; Shrimp poly-culture |
| Auteurs | | Top |
- Hoang, M.N.
- Nguyen, P.N.
- Bossier, P.
|
|
|
| Abstract |
Shrimp polyculture has not been common practice because it is mostly limited to extensive aquaculture systems. A combination of shrimp-fish polyculture and biofloc technology may have the potential to substitute low intensive shrimp polyculture systems. An indoor trial was conducted to investigate whether a biofloc-based co-culture of Litopenaeus vannamei and Mugil cephalus generates synergistic effects at the level of water quality, animal production, and nutrient budgets relative to co-culture and/or biofloc based monoculture. Shrimp (0.50 ± 0.16 g) were randomly distributed in 12 fiberglass tanks (5 m3) at a density of 80 shrimp.m-3. Six tanks were operated as shrimp monoculture either without biofloc (M-only) or with bioflocs (M-biofloc). The other six tanks were operated as polyculture (Mugil cephalus size of 1.51 ± 0.02 g added at 10% stocking density of the shrimp biomass) either without biofloc (P-only) or with biofloc (P-biofloc). The results showed that water quality parameters, such as total ammonia nitrogen (TAN), nitrite, nitrate, phosphate were significantly lower in M-biofloc and P-biofloc than in other treatments (p<0.001). There were synergistic effects (reduction) at the level of N waste output but not for P waste output by applying polyculture in combination with biofloc technology. Total animal production was significantly higher in P-only and P-biofloc (4252 and 4425 g.tank-1, respectively) relative to the respective monocultures. These polyculture treatments were also lower in feed conversion ratio (1.18 and 1.07, respectively) than in M-only and M-biofloc. Yet no synergistic effects were noticed by combining polyculture with bioflocs. The data seems to indicate that mullet is not an efficient biofloc consumer. Analysis of DGGE bacterial profile illustrated a dynamic microbial community structure in the water column and considerable difference in microbial community structures among treatments. It is concluded that the combination of shrimp-fish polyculture and biofloc has additive effects at the level of animal production and synergistic effects at the level of some water quality parameters. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
