Effect of bioflocs on growth performance and survival of white-leg shrimp Litopenaeus vannamei raised in zero-water exchange culture tanks | ||||
Egyptian Journal of Aquatic Biology and Fisheries | ||||
Articles in Press, Accepted Manuscript, Available Online from 29 April 2021 | ||||
Document Type: Original Article | ||||
DOI: 10.21608/ejabf.2021.69110.2144 | ||||
View on SCiNiTO | ||||
Authors | ||||
Mohamed Hamed Yassien 1; Mervat Mohamed2; Ola Awad Ashry2 | ||||
1National Institute of Oceanography and Fisheries | ||||
2Faculty of Agriculture, Suez Canal University | ||||
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 difference (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; Growth performance; Survival; Litopenaeus vannamei | ||||
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