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Egyptian Journal of Aquatic Biology and Fisheries
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Hamed Yassien, M., Awad Ashry, O., Ali Mohamed, M. (2021). Effect of biofloc on growth performance and survival of the white-leg shrimp Litopenaeus vannamei raised in zero-water exchange culture tanks. Egyptian Journal of Aquatic Biology and Fisheries, 25(2), 651-663. doi: 10.21608/ejabf.2021.166967
Mohamed Hamed Yassien; Ola Awad Ashry; Mervat Ali Mohamed. "Effect of biofloc on growth performance and survival of the white-leg shrimp Litopenaeus vannamei raised in zero-water exchange culture tanks". Egyptian Journal of Aquatic Biology and Fisheries, 25, 2, 2021, 651-663. doi: 10.21608/ejabf.2021.166967
Hamed Yassien, M., Awad Ashry, O., Ali Mohamed, M. (2021). 'Effect of biofloc on growth performance and survival of the white-leg shrimp Litopenaeus vannamei raised in zero-water exchange culture tanks', Egyptian Journal of Aquatic Biology and Fisheries, 25(2), pp. 651-663. doi: 10.21608/ejabf.2021.166967
Hamed Yassien, M., Awad Ashry, O., Ali Mohamed, M. Effect of biofloc on growth performance and survival of the white-leg shrimp Litopenaeus vannamei raised in zero-water exchange culture tanks. Egyptian Journal of Aquatic Biology and Fisheries, 2021; 25(2): 651-663. doi: 10.21608/ejabf.2021.166967

Effect of biofloc on growth performance and survival of the white-leg shrimp Litopenaeus vannamei raised in zero-water exchange culture tanks

Article 36, Volume 25, Issue 2, March and April 2021, Page 651-663  XML PDF (508.87 K)
Document Type: Original Article
DOI: 10.21608/ejabf.2021.166967
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Authors
Mohamed Hamed Yassien; Ola Awad Ashry; Mervat Ali Mohamed
Abstract
A 90-day trial was conducted to evaluate the effects of three different protein levels (25%, 30%, and 35% CP) and two different carbon sources  (sugarcane bagasse and wheat flour) on the growth performance, feed utilization and survival rate of the white-leg shrimp Litopenaeus vannamei in zero –water exchange tanks. Six biofloc treatments and one control (45% CP) without biofloc were managed. Final body weight, weight gain, specific growth rate and protein efficiency ratio were highly affected " interaction "(P < 0.01) by different protein levels (25%, 30%, and 35% CP) and different carbon sources (sugarcane bagasse and wheat flour).  Survival rates ranging from 72.2% to 83.3%, and there were no significant differences (P > 0.05) among all treatments. There were no significant differences (P > 0.05) in moisture, crude protein and lipid among six biofloc and control treatments.
Keywords
Bioflocs; Survival; Growth performance; Litopenaeus vannamei
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