Effects of biofloc promotion on water quality, growth, biomass yield and heterotrophic community in Litopenaeus vannamei (Boone, 1931) experimental intensive cultures
Six 1.2-m3 tanks were stocked with an initial biomass of 500 g m-3 of Litopenaeus vannamei juveniles (individual weight: 1.0±0.3 g), to evaluate the effect of biofloc promotion on water quality and on shrimp growth and production, and to identify the dominant taxa in the heterotrophic communities pr...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2015-08-01
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| Series: | Italian Journal of Animal Science |
| Subjects: | |
| Online Access: | http://www.aspajournal.it/index.php/ijas/article/view/3726 |
| _version_ | 1828532274620006400 |
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| author | Irasema E. Luis-Villaseñor Domenico Voltolina Juan M. Audelo-Naranjo María R. Pacheco-Marges Víctor E. Herrera-Espericueta Emilio Romero-Beltrán |
| author_facet | Irasema E. Luis-Villaseñor Domenico Voltolina Juan M. Audelo-Naranjo María R. Pacheco-Marges Víctor E. Herrera-Espericueta Emilio Romero-Beltrán |
| author_sort | Irasema E. Luis-Villaseñor |
| collection | DOAJ |
| description | Six 1.2-m3 tanks were stocked with an initial biomass of 500 g m-3 of Litopenaeus vannamei juveniles (individual weight: 1.0±0.3 g), to evaluate the effect of biofloc promotion on water quality and on shrimp growth and production, and to identify the dominant taxa in the heterotrophic communities present in experimental closed cultures. Feeding was ad libitum twice daily with 35% protein shrimp feed. Three tanks were managed as biofloc technology (BFT) systems, adding daily an amount of cornmeal equivalent to 50% of the shrimp feed supplied. The remaining three received only shrimp feed and served as controls. Experiment lasted 21 days. The mean concentrations of P-PO4 3- and inorganic dissolved N species (TAN, N-NO2 -, N-NO3 -) were significantly lower (P<0.5) in BFT than in the control. The individual final weight, increase in biomass, food, and protein conversion rates were significantly better in BFT than in the control (P<0.05). The mean N content of the shrimp biomass gained in the BFT cultures was equivalent to 45.7% of the protein-N added as feed, and was significantly higher than the 34.7% recycled into shrimp biomass in the control cultures. Bacterial concentrations were not significantly different. Vibrionaceae dominated in both systems; in both some isolates were potential pathogens, and diversity was higher in the control than in the BFT treatment. The advantages of BFT technology are confirmed by the significantly lower TAN and N-NO2 - concentrations, as well as by the better shrimp performance in terms of growth, biomass yield, and food and protein conversion efficiency. |
| first_indexed | 2024-12-11T22:50:53Z |
| format | Article |
| id | doaj.art-69911dbc6c1c4d2a93555682c79f4043 |
| institution | Directory Open Access Journal |
| issn | 1594-4077 1828-051X |
| language | English |
| last_indexed | 2024-12-11T22:50:53Z |
| publishDate | 2015-08-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Italian Journal of Animal Science |
| spelling | doaj.art-69911dbc6c1c4d2a93555682c79f40432022-12-22T00:47:28ZengTaylor & Francis GroupItalian Journal of Animal Science1594-40771828-051X2015-08-0114310.4081/ijas.2015.37262380Effects of biofloc promotion on water quality, growth, biomass yield and heterotrophic community in Litopenaeus vannamei (Boone, 1931) experimental intensive culturesIrasema E. Luis-Villaseñor0Domenico Voltolina1Juan M. Audelo-Naranjo2María R. Pacheco-Marges3Víctor E. Herrera-Espericueta4Emilio Romero-Beltrán5Facultad de Ciencias del Mar, Universidad Autónoma de Sinaloa, Mazatlán, SinaloaCentro de Investigaciones Biológicas del Noroeste, Universidad Autónoma de Sinaloa, Mazatlán, SinaloaFacultad de Ciencias del Mar, Universidad Autónoma de Sinaloa, Mazatlán, SinaloaFacultad de Ciencias del Mar, Universidad Autónoma de Sinaloa, Mazatlán, SinaloaFacultad de Ciencias del Mar, Universidad Autónoma de Sinaloa, Mazatlán, SinaloaCentro Regional de Investigación Pesquera, Instituto Nacional de Pesca, Mazatlán, SinaloaSix 1.2-m3 tanks were stocked with an initial biomass of 500 g m-3 of Litopenaeus vannamei juveniles (individual weight: 1.0±0.3 g), to evaluate the effect of biofloc promotion on water quality and on shrimp growth and production, and to identify the dominant taxa in the heterotrophic communities present in experimental closed cultures. Feeding was ad libitum twice daily with 35% protein shrimp feed. Three tanks were managed as biofloc technology (BFT) systems, adding daily an amount of cornmeal equivalent to 50% of the shrimp feed supplied. The remaining three received only shrimp feed and served as controls. Experiment lasted 21 days. The mean concentrations of P-PO4 3- and inorganic dissolved N species (TAN, N-NO2 -, N-NO3 -) were significantly lower (P<0.5) in BFT than in the control. The individual final weight, increase in biomass, food, and protein conversion rates were significantly better in BFT than in the control (P<0.05). The mean N content of the shrimp biomass gained in the BFT cultures was equivalent to 45.7% of the protein-N added as feed, and was significantly higher than the 34.7% recycled into shrimp biomass in the control cultures. Bacterial concentrations were not significantly different. Vibrionaceae dominated in both systems; in both some isolates were potential pathogens, and diversity was higher in the control than in the BFT treatment. The advantages of BFT technology are confirmed by the significantly lower TAN and N-NO2 - concentrations, as well as by the better shrimp performance in terms of growth, biomass yield, and food and protein conversion efficiency.http://www.aspajournal.it/index.php/ijas/article/view/3726BioflocShrimp growthNutrient recyclingHeterotrophic bacteria |
| spellingShingle | Irasema E. Luis-Villaseñor Domenico Voltolina Juan M. Audelo-Naranjo María R. Pacheco-Marges Víctor E. Herrera-Espericueta Emilio Romero-Beltrán Effects of biofloc promotion on water quality, growth, biomass yield and heterotrophic community in Litopenaeus vannamei (Boone, 1931) experimental intensive cultures Italian Journal of Animal Science Biofloc Shrimp growth Nutrient recycling Heterotrophic bacteria |
| title | Effects of biofloc promotion on water quality, growth, biomass yield and heterotrophic community in Litopenaeus vannamei (Boone, 1931) experimental intensive cultures |
| title_full | Effects of biofloc promotion on water quality, growth, biomass yield and heterotrophic community in Litopenaeus vannamei (Boone, 1931) experimental intensive cultures |
| title_fullStr | Effects of biofloc promotion on water quality, growth, biomass yield and heterotrophic community in Litopenaeus vannamei (Boone, 1931) experimental intensive cultures |
| title_full_unstemmed | Effects of biofloc promotion on water quality, growth, biomass yield and heterotrophic community in Litopenaeus vannamei (Boone, 1931) experimental intensive cultures |
| title_short | Effects of biofloc promotion on water quality, growth, biomass yield and heterotrophic community in Litopenaeus vannamei (Boone, 1931) experimental intensive cultures |
| title_sort | effects of biofloc promotion on water quality growth biomass yield and heterotrophic community in litopenaeus vannamei boone 1931 experimental intensive cultures |
| topic | Biofloc Shrimp growth Nutrient recycling Heterotrophic bacteria |
| url | http://www.aspajournal.it/index.php/ijas/article/view/3726 |
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