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- Title
Effect of using sodium bicarbonate to adjust the pH to different levels on water quality, the growth and the immune response of shrimp Litopenaeus vannamei reared in zero-water exchange biofloc-based culture tanks.
- Authors
Zhang, Kaiquan; Pan, Luqing; Chen, Wenbin; Wang, Chao
- Abstract
The bioflocs technology proved to be a sustainable technique used in zero-water exchange shrimp culture systems. However, the pH and alkalinity may decrease due to the biofloc formation process and Nitrification. A 48-day experiment was performed to investigate the effects of different pH (7.1-7.6; 7.6-8.1) conditions on water quality, the growth and the health status of shrimp in biofloc technology ( BFT) through using sodium bicarbonate to adjust pH respectively. Two pH treatments and one control were compared: T0 - control, T1 - pH 7.6 - NaHCO3, T2 - pH 8.1 - NaHCO3, each treatment consisted of three replicate tanks (90 L water volume) and each replicate stocked with 30 shrimp (equivalent to 333 shrimp m−3). Significant physical, chemical and biological differences ( P < 0.05) were detected among treatments. At the end of the experiment, water quality, the growth and the immune response of shrimp in control were significantly lower ( P < 0.05) than the other treatments. Moreover, the T2 treatment had a better performance in these three aspects. The results indicated that it was necessary to adjust the pH and alkalinity in the BFT, and a higher pH as well as alkalinity for shrimp growth and the stability of the BFT were more favourable.
- Subjects
WATER quality; SHRIMP culture; SODIUM bicarbonate; IMMUNE response; LITOPENAEUS
- Publication
Aquaculture Research, 2017, Vol 48, Issue 3, p1194
- ISSN
1355-557X
- Publication type
Article
- DOI
10.1111/are.12961