Iranian Journal of Fisheries Sciences
مجله علوم شیلاتی ایران
IJFS
Agriculture
http://jifro.ir
1
admin
1562-2916
10.18869/acadpub.ijfs
en
jalali
1400
6
1
gregorian
2021
9
1
20
5
online
1
fulltext
en
Research Article: Effect of water hyacinth (Eichhornia crassipes) density on water quality, growth performance and survival of koi carp (Cyprinus carpio carpio) in an aquaponic system
aquaculture
aquaculture
پژوهشي
Orginal research papers
<p>The present study aimed to assess the effect of water hyacinth (<em>Eichhornia crassipes</em>) as a biofilter on water quality, growth performance and survival of koi carp (<em>Cyprinus carpio</em>) in an aquaponic system. Water hyacinth was used at three densities of 2 bushes, 4 bushes and 6 bushes. Each treatment contained 10 fish weighing 11.43±0.1 g (in 80 L aquarium) in 3 replicates, and the experiment was run at 22-24°C for 42 days. A control group was also included without the plant. The obtained results showed that there was no significant difference in dissolved oxygen (DO) level among the treatments while DO in all treatments were almost insignificantly higher than the control (<em>p</em>>0.05). Total dissolved solid in all treatments were significantly lower than control with the lowest level obtained in 4 bushes group (<em>p</em><0.05). Total suspension solid level in all treatments were significantly higher than control (<em>p</em><0.05). Also, PO<sub>4 </sub>value was decreased with an increasing in the plant density. Both nitrite and nitrate in all treatments were lower than control group. Cadmium content of water was reduced with increasing in plant density. These values in all densities were lower than the control group. A better performance in final weight, weight gain, daily growth weight, specific growth rate, protein efficiency ratio and food conversion ratio were obtained in 4 bushes than the other treatments. Also, significantly lower mortality (about 12-34%) was observed in all treatments than the control fish (<em>p</em><0.05). These data show that the combination of water hyacinth especially at 4 bushes density together with koi carp can improve water quality and increases fish production.</p>
Aquaponic, Eichhornia crassipes, Growth, Survival, Water quality, Koi carp
1442
1453
http://jifro.ir/browse.php?a_code=A-10-776-4&slc_lang=en&sid=1
G.
Varasteh Moakher
100319475328460041345
100319475328460041345
No
Department of Fisheries Science, Faculty of Agriculture and Natural Resources, Science and Research Branch of Islamic Azad University, Tehran, Iran.
M.
Soltani
msoltani@ut.ac.ir
100319475328460041346
100319475328460041346
Yes
Department of Aquatic Animal Health, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
M.
Shamsaee-Mehrjan
msoltani@ut.ac.ir
100319475328460041347
100319475328460041347
No
Department of Fisheries Science, Faculty of Agriculture and Natural Resources, Science and Research Branch of Islamic Azad University, Tehran, Iran.
A.
Kamali
msoltani@ut.ac.ir
100319475328460041348
100319475328460041348
No
Department of Fisheries Science, Faculty of Agriculture and Natural Resources, Science and Research Branch of Islamic Azad University, Tehran, Iran.