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The Effect of Solids Removal on Water Quality, Growth and Survival of Litopenaeus vannamei in a Biofloc Technology Culture System
Control of the concentration of suspended solids contributed to the improvement of water quality and the growth performance of the shrimp L. vannamei in the superintensive biofloc technology culture.
Use of different carbon sources for the biofloc system adopted during the nursery and grow-out culture of Litopenaeus vannamei
- F. P. Serra, C. Gaona, P. Furtado, L. Poersch, W. Wasielesky
- BiologyAquaculture International
- 11 February 2015
The faster degradation of dextrose and molasses sources may have provided higher levels of carbon as a substrate for heterotrophic bacteria to use in metabolizing ammonia, thereby improving the water quality.
Effect of different total suspended solids levels on a Litopenaeus vannamei (Boone, 1931) BFT culture system during biofloc formation
- C. Gaona, Marcos Souza de Almeida, V. Viau, L. Poersch, W. Wasielesky
- Engineering, Biology
- 1 March 2017
The water quality parameters at lower range of total suspended solids concentration (TL) treatment resulted in a better performance of L. vannamei in the BFT system, and maintenance at range of 100–300 mg L−1 TSS is thus important to the success of shrimp culture.
Application of different doses of calcium hydroxide in the farming shrimp Litopenaeus vannamei with the biofloc technology (BFT)
The results obtained indicate that doses of 0.05 g L−1 of calcium hydroxide or daily applications between 10 and 20 % of the total amount of feed offered to the shrimp can be used for the correction of alkalinity and pH.
Biofloc management with different flow rates for solids removal in the Litopenaeus vannamei BFT culture system
- C. Gaona, F. P. Serra, P. Furtado, L. Poersch, W. Wasielesky
- Engineering, BiologyAquaculture International
- 2 March 2016
The survival, productivity and food conversion ratio were significantly better in the HF and LF treatments compared to those of the control, and the best shrimp performance was obtained with solids removal.
Acute toxicity of carbon dioxide to juvenile marine shrimp Litopenaeus vannamei (Boone 1931)
It is recommended that CO2 levels should be kept below the safety level obtained in this study, and the highest concentration that did not induce significantly higher mortality than that observed in controls (NOEC) was 23.8 mg/L of CO2.
Effect of different total suspended solids concentrations on the growth performance of Litopenaeus vannamei in a BFT system
[Gastric emptying of different liquid test meals measured by ultrasonography].
The results are in accordance with published data regarding gastric motor physiology and demonstrates the usefulness of ultrasound in the study of gastric emptying of fluids.
[Gastroduodenitis and Helicobacter pylori in uremic patients].
Hp was associated to chronic inflammatory gastroduodenal diseases in both groups and may be a cofactor in its pathogenesis and recommended Hp treatment before renal transplantation.
Bioeconomic analysis of the production of marine shrimp in greenhouses using the biofloc technology system
The analysis confirms that P. vannamei production using the BFT system is a financially sustainable activity.