scholarly journals Growth and nitrogen uptake by Arthrospira platensis cultured in aquaculture wastewater from Nile tilapia reared in biofloc system

2021 ◽  
Vol 43 ◽  
pp. e57549
Author(s):  
Laenne Barbara Silva de Moraes ◽  
Géssica Cavalcanti Pereira Mota ◽  
Renata da Silva Farias ◽  
Yllana Ferreira Marinho ◽  
Luis Otávio Brito Silva ◽  
...  
Keyword(s):  
Growth Rate ◽  
Nile Tilapia ◽  
Growth Parameters ◽  
N Uptake ◽  
Arthrospira Platensis ◽  
Ammonia Nitrogen ◽  
Control Treatment ◽  
Maximum Cell Density ◽  
Total Ammonia ◽  
Maximum Cell

This study aimed to evaluate the growth of Arthrospira (Spirulina) platensis cultivated in Zarrouk culture medium and effluent from Nile tilapia (Oreochromis niloticus) reared in biofloc system. Four treatments were used: Control (100% Zarrouk), E50 (50% Zarrouk + 50% Tilapia effluent), E75 (25% Zarrouk + 75% Tilapia effluent), and E100 (100% Tilapia effluent), and the experiment lasted 10 days. Growth parameters such as maximum cell density (MCD), doubling time (DT), and growth rate (K) were daily evaluated, as well as pH and water temperature. In addition, the concentrations of total ammonia nitrogen (TAN), nitrite-N (NO2-N), and nitrate-N (NO3-N) were analyzed in order to compare nitrogen absorption. Among treatments, E50 and E75 obtained higher maximum cell densities and presented an exponential growth rate similar to the control treatment. Regarding the concentrations of nitrogen compounds, a significant reduction was observed in all treatments, with an NO3-N uptake of 99%, followed by 80% of TAN and 90% of NO2-N. Thus, giving the results obtained, besides being able to grow in wastewater, A. platensis can also be used in bioremediation processes, confirming the potential of this species.

scholarly journals High levels of total ammonia nitrogen as NH4+ are stressful and harmful to the growth of Nile tilapia juveniles - doi: 10.4025/actascibiolsci.v35i4.17291

2013 ◽  
Vol 35 (4) ◽  
Author(s):  
Francisco Jackes Rodrigues da Silva ◽  
Francisco Roberto dos Santos Lima ◽  
Diego Alves do Vale ◽  
Marcelo Vinícius do Carmo e Sá
Keyword(s):  
Nile Tilapia ◽  
Ammonia Nitrogen ◽  
Total Ammonia Nitrogen ◽  
Total Ammonia

scholarly journals Mannanoligosaccharides as a Carbon Source in Biofloc Boost Dietary Plant Protein and Water Quality, Growth, Immunity and Aeromonas hydrophila Resistance in Nile Tilapia (Oreochromis niloticus)

Animals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1724 ◽  
Author(s):  
Asmaa T.Y. Kishawy ◽  
Alaa H. Sewid ◽  
Hend S. Nada ◽  
Mohamed A. Kamel ◽  
Shefaa A.M. El-Mandrawy ◽  
...  
Keyword(s):  
Carbon Source ◽  
Aeromonas Hydrophila ◽  
Nile Tilapia ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Ammonia Nitrogen ◽  
Feed Conversion ◽  
Reactive Protein ◽  
Bacillus Spp ◽  
Total Ammonia

The aim of the present study was to evaluate mannan oligosaccharides (MOS) or glycerol (GLY) as a carbon source on biofloc systems of Nile tilapia (O. niloticus) juveniles. Fish (n = 750) were reared in open flow (Controls) or biofloc systems (B-GLY and B-MOS) fed with a plant or fish protein source over a period of twelve weeks. Total ammonia nitrogen and nitrate decreased in the biofloc groups, while biofloc volume increased in B-MOS. Compared to the controls, B-MOS and B-GLY exhibited higher weight gain and improved feed conversion, irrespectively of the diet. Serum level of C-reactive protein was reduced, while IgM and lysozyme activity was higher in the B-MOS fish, compared to other groups. Intestinal Bacillus spp. count was increased, whereas Vibrio, Aeromonas and Pseudomonas spp. counts decreased in B-MOS reared groups, compared to the other groups. The proinflammatory cytokine (IL-8 and IFN-γ) transcript expression was upregulated in B-MOS more than B-GLY reared groups. Compared to the controls, the virulence of Aeromonas hydrophila was decreased in the B-MOS and B-GLY groups. The results indicate several benefits of using MOS as a carbon source in a biofloc Nile tilapia system; a cost benefit analysis is required to assess the economic viability of this.

scholarly journals Effects of water quality and stocking density on growth performance of juvenile cod (Gadus morhua L.)

2006 ◽  
Vol 63 (2) ◽  
pp. 326-334 ◽  
Author(s):  
Björn Björnsson ◽  
Sólveig R. Ólafsdóttir
Keyword(s):  
Growth Rate ◽  
Gadus Morhua ◽  
Stocking Density ◽  
Ammonia Nitrogen ◽  
Limiting Factor ◽  
Negative Effects ◽  
Total Ammonia ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

Abstract In a 5-month experiment where groups of juvenile cod were reared in a flow-through system at low density (Group 1) and in a recirculating system at low (Group 2) and high densities (Group 3), the recirculated water had negative effects on growth rate, nutritional condition, and mortality. After the first month, mean weight was significantly larger in Group 1 than in the other two groups. The effect of stocking density on mean weight was not significant until the end of the experiment, when densities were 9.0 and 48.3 kg m−3 in Groups 2 and 3, respectively. Initial mean weight of fish was 37.3 g and at the termination of the experiment mean weights were 225.2, 181.8, and 167.9 g in Groups 1, 2, and 3, respectively. After 5 months, mean condition factors were 1.074, 0.965, and 0.946, mean liver indices 9.5, 9.0, and 7.6, and mean mortalities over the course of the experiment were 1.0%, 5.1%, and 2.4% in Groups 1, 2, and 3, respectively. Water temperature (10.4–10.6°C), pH (7.2–7.4) and oxygen concentration (8–10 mg l−1) were similar among groups. Concentration of total ammonia nitrogen (TAN) was similar among groups for the first half of the experiment (0.3–0.4), but during the last month it was 0.6, 1.3, and 1.5 mg l−1 in Groups 1, 2, and 3, respectively. There was a negative correlation (r2 = 0.48, n = 36) between relative growth rate and TAN, suggesting that ammonia may have been a limiting factor in the recirculating system. The apparent threshold limit of TAN for reduced growth was approximately 1 mg l−1.

scholarly journals Effect of Adding BIOM-S Probiotic on Survival and Growth Rate of Nile Tilapia (Oreochromis niloticus)

2018 ◽  
pp. 1-6
Author(s):  
Yuli Andriani ◽  
Taufik Ikhsan Kamil ◽  
Irfan Zidni ◽  
Iskandar . ◽  
Titin Herawati
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Specific Growth Rate ◽  
Nile Tilapia ◽  
Specific Growth ◽  
Culture Media ◽  
Control Treatment ◽  
Randomized Design ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Survival And Growth

This research was conducted in May-June 2017 in Hatchery Indoor Maksudi, Astanaanyar, Bandung. This research aims to find out the optimal BIOM-S probiotic on culture media of Nile tilapia, and the influence to survival rate and growth rate of Nile tilapia. This research was conducted by an experiment using Completely Randomized Design (CRD). This research consisted of five treatments and three replications, which were treatment A (control), treatment B (giving probiotic with 0,6 ml/L concentration), treatment C (giving probiotic with 0,8 ml/L concentration), treatment D (giving probiotic with ,0 ml/L concentration), and treatment E (giving probiotic with 1,2 ml/L concentration). The parameters in this research were the survival rate and specific growth rate. Survival rate and specific growth rate used data analysis with F test to find out the influence of each treatment. The concentration of optimal probiotic based on the results was 0.8 ml/L, it produced the highest survival rate for 81.67% and the specific growth rate for 0.039%.

scholarly journals Effects of feeding zooplankton, Moina macrocopa (Straus, 1820) on the growth of Nile tilapia Oreochromis niloticus L.

2017 ◽  
Vol 52 (2) ◽  
pp. 81-88
Author(s):  
MR Islam ◽  
MR Hassan ◽  
M Begum ◽  
NJ Punom ◽  
MK Begum ◽  
...  
Keyword(s):  
Growth Performance ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Growth Parameters ◽  
Average Daily Gain ◽  
Control Treatment ◽  
Feed Conversion ◽  
Moina Macrocopa ◽  
Individual Fish ◽  
Commercial Feed

Studies were carried out on the growth performance of Tilapia fry, Oreochromis niloticus cultured with zooplankton, Moina macrocopa in comparison to commercial feed. Three types of feed were used in three treatments where treatment-1 was fed with handmade feed (control), treatment-2 with commercial feed and treatment-3 with live zooplankton M. macrocopa. Thirty fry were stocked in each 60 L aquarium for a rearing period of 56 days. The fishes were fed twice a day at 90-400 Moina/individual fish for first 20 days, then 500-850 Moina/individual fish for 15 days and 900-1250 Moina/individual fish for remaining days. Sampling was done at 14 days interval. The growth performance of M. macrocopa was higher in the treatment fed with Spirulina which was 6350 individuals/ L of water and in the treatment fed with yeast it was 5100 individuals/L of water at 12th days. The study showed that condition factor of tilapia fry found in treatment-3 fed with M. macrocopa was comparatively higher (2.18±0.09) than that of treatment-2 fed with commercial feed (1.86±0.13) at a 56-day culture period. Average daily gain was significantly higher in the treatment-3 fed with M. macrocopa (0.13±0.01) than those of treatment-1 (0.06±0.01) and treatment-2 (0.08±0.01). The best value of feed conversion ratio and specific growth rate was found in treatment-3 fed with M. macrocopa than commercial feed and handmade feed. Protein content was significantly higher (15.91%) in treatment-3 than those of treatment-1 (10.96%) and treatment-2 (11.88%). The findings of this study suggest that growth parameters and body composition of Nile Tilapia was better in treatment-3 fed with M. macrocopa.Bangladesh J. Sci. Ind. Res. 52(2), 81-88, 2017

scholarly journals Utilization of biofloc meal as a feed ingredient for Nile tilapia and common carp

2018 ◽  
Vol 17 (1) ◽  
pp. 9 ◽  
Author(s):  
Julie Ekasari ◽  
Hilda Kemala Pasha ◽  
Nur Bambang Priyoutomo
Keyword(s):  
Growth Rate ◽  
Common Carp ◽  
Fish Species ◽  
Cyprinus Carpio ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Control Diet ◽  
Control Treatment ◽  
Lower Growth ◽  
Similar Treatment

<p align="center"><strong>ABSTRACT</strong></p><p>This study was aimed to evaluate the utilisation of biofloc meal collected from biofloc-based catfish intensive culture as a mix ingredient for Nile tilapia <em>Oreochromis niloticus</em> and common carp <em>Cyprinus carpio </em>diet. A control diet containing 29.03% crude protein was used in this experiment. Experimental diet was made by mixing 30% biofloc waste meal with the control diet and repelleted after the addition of 2% of binder. To determine the experimental feed digestibility, 0.5% of Cr<sub>2</sub>O<sub>3 </sub>was added as a marker for digestibility. The feed was offered to satiation at a frequency of 3 times a day for 28 days of experimentation. Nile tilapia and common carp juveniles with an initial average body weight of 11.72±0.04 g and 8.81±0.04 g, respectively, were used as the experimental animals. Each fish species were randomly stocked with a density of 10 fish/aquarium (30´45´30 cm<sup>3</sup>). The results showed that dry matter digestibility of diets with 30 % biofloc waste meal in both fish species were significantly lower than those of the controls (P&lt;0.05). However, protein, lipid and phosphorus digestibilities of diets containing biofloc waste meal were significantly higher than those of the controls (P&lt;0.05). Feeding with biofloc waste meal mixed feed to tilapia resulted in lower growth rate compared to that to fed control feed. On the other hand, similar treatment to common carp resulted in comparable growth rate to the control treatment.</p><p>Keywords: biofloc meal, digestibility, growth performance, tilapia, common carp</p><p> </p><p class="Default" align="center"><strong>ABSTRAK</strong></p><p class="Default"><strong>                                                                                      </strong></p><p class="Paragraf">Penelitian ini bertujuan untuk mengevaluasi pemanfaatan tepung bioflok yang dikumpulkan dari limbah pemeliharaan ikan lele intensif berbasis teknologi bioflok sebagai campuran pakan untuk ikan nila <em>Oreochromis niloticus</em> dan ikan mas <em>Cyprinus carpio</em>. Pakan kontrol yang digunakan adalah pakan komersial dengan kadar protein 29,03%. Pembuatan pakan uji dilakukan dengan mencampurkan tepung limbah bioflok (30%) dengan pakan kontrol (67,5%) dan dibentuk pelet kembali setelah dilakukan penambahan <em>binder</em> sebanyak 2% dan Cr<sub>2</sub>O<sub>3 </sub>sebanyak 0,5% sebagai penanda untuk menganalisis kecernaan pakan dengan tepung limbah bioflok. Pakan diberikan secara <em>at satiation </em>dengan frekuensi pemberian pakan 3 kali/hari selama 28 hari pemeliharaan. Bobot rata-rata ikan awal adalah 11,72±0,04 g untuk ikan nila, dan 8,81±0,04 g untuk ikan mas dengan kepadatan awal masing-masing 10 ekor/akuarium (30´45´30 cm<sup>3</sup>). Hasil penelitian ini menunjukkan bahwa nilai kecernaan total pakan dengan tepung limbah bioflok baik pada ikan nila maupun ikan mas lebih rendah daripada pakan kontrol (P&lt;0,05). Namun demikian, kecernaan protein, lemak, dan fosfor pakan dengan campuran tepung limbah bioflok lebih tinggi daripada kontrol (P&lt;0,05). Pemberian tepung limbah bioflok sebanyak 30% sebagai campuran pakan menghasilkan laju pertumbuhan spesifik ikan nila yang lebih rendah (P&lt;0,05), sedangkan perlakuan yang sama pada ikan mas memberikan laju pertumbuhan spesifik yang tidak berbeda nyata dengan kontrol (P&gt;0,05).</p><p class="Paragraf"> </p><p class="Paragraf">Kata kunci: tepung limbah bioflok, kecernaan, kinerja pertumbuhan, ikan nila, ikan mas</p>

scholarly journals Fostering bacterial growth in BFT aquaculture tanks by early Nile tilapia stocking

2021 ◽  
Vol 43 ◽  
pp. e53009
Author(s):  
Francisco Roberto dos Santos Lima ◽  
Davi de Holanda Cavalcante ◽  
Marcelo Vinícius do Carmo e Sá
Keyword(s):  
Bacterial Growth ◽  
Bacterial Communities ◽  
Nile Tilapia ◽  
Suspended Solids ◽  
C:N Ratio ◽  
Ammonia Nitrogen ◽  
Total Ammonia Nitrogen ◽  
Total Ammonia ◽  
Low Levels ◽  
Daily Application

The current study aimed at fostering bacterial growth in BFT aquaculture tanks by early Nile tilapia stocking. Control tanks had no tilapia but received daily applications of dry molasses (NT+) or had tilapia but no C:N ratio adjustment (T-). Experimental tanks had tilapia and received daily application of molasses to adjust the C:N ratio of water to 15:1 (T+). The development of bioflocs in NT+ was insignificant as demonstrated by low levels of settleable solids (SS) and total suspended solids (TSS). Total ammonia nitrogen (TAN) was significantly higher in NT+ than in T+. In the C:N-ratio adjusted tanks, the presence of fish shortened the control of TAN in several days. As nitrite declined in T+, it increased in NT+. The final concentrations of TSS in T+, T- and NT+ were 236 ± 29 mg L-1, 100 ± 32 mg L-1, and 40 ± 22 mg L-1, respectively (p < 0.05). It can be concluded that stable nitrifying and heterotrophic bacterial communities could be attained in BFT aquaculture tanks, before the end of the 4th week of culture, if the bacterial growth is fostered by early Nile tilapia stocking.

Periphyton use on microbial dynamics, water quality, and Nile tilapia growth in rearing tanks

2021 ◽  
Vol 56 ◽  
Author(s):  
Jéssica Lucinda Saldanha da Silva ◽  
Fátima Cristiane Teles de Carvalho ◽  
Rubson Mateus Matos Carvalho ◽  
Oscarina Viana de Sousa
Keyword(s):  
Water Quality ◽  
Nile Tilapia ◽  
Heterotrophic Bacteria ◽  
Experimental Period ◽  
Ammonia Nitrogen ◽  
Quality Parameters ◽  
Artificial Substrate ◽  
Biofilm Growth ◽  
Total Ammonia ◽  
Periphytic Biofilm

Abstract: The objective of this work was to evaluate the effect of the use of an artificial substrate for periphytic biofilm growth on the microbiological composition of the biofilm, water quality, and zootechnical performance of Nile tilapia (Oreochromis niloticus) in rearing tanks. The experiment consisted of two treatments: presence and absence of artificial substrate for the growth of periphyton, with five replicates. Water quality parameters were evaluated throughout the entire experimental period. Every two weeks, samples of the periphyton were collected for the analysis of its microbiological composition and biometric measurements of the fish were performed. The number of heterotrophic bacteria in the biofilm increased during the experimental period, but that of Aeromonas decreased with the use of the artificial substrate. The total ammonia nitrogen in the tanks with periphyton reduced in 30% compared with that of the control. Tilapia reared with the biofilm showed a final weight 2.4 times greater than that of those subjected to the control, as well as an increase of 59.19% in their productivity. The use of an artificial substrate for periphytic biofilm in Nile tilapia rearing tanks favors the maintenance of the quality of the culture water, the protection of the fish against pathogens, and the improvement of the zootechnical performance of the fish.

scholarly journals Influence of the K+ and Ca2+ on the Presence of Sugars in the Phloem, and Growth Parameters in Capsicum

2018 ◽  
Vol 7 (2) ◽  
pp. 1
Author(s):  
Pedro Alberto Rojas-Rojas ◽  
Saul Parra-Terraza ◽  
Sixto Velarde-Felix ◽  
Luis Alberto Lightbourn-Rojas
Keyword(s):  
Growth Rate ◽  
Growth Parameters ◽  
Solution Treatment ◽  
Control Treatment ◽  
Flowering Stage ◽  
A Value ◽  
Fruiting Stage ◽  
Low Potassium ◽  
Crop Cycle ◽  
Nutrient Solutions

The effect of various K+ and Ca2+ nutrient solutions were evaluated to measure the growth rate, amount of reducing sugars and the production of Capsicum annuum Plants were grown directly in soil under shade house conditions in two separate experiments across two consecutive years. Nine nutrient solutions containing three levels of K+ (27, 35 and 43%) combined with three levels of Ca2+ (37, 45 and 53%) were used, along with the Steiner solution treatment as a control. Irrigation was calculated every week according to Kc, volumetric humidity and ETo, the experimental design was a block (furrows) with a 3(x)3 factorial arrangement. There was no interaction between growth rate, sugars and yield. Plants treated with the combination 27% of potassium with 53% of calcium presented a yield of 500 g/fruit greater than the control treatment (Steiner), and produced on average 2 more fruits per plant with a weight of 160 g/fruit (<0.05) higher than Steiner, the low potassium concentration (27%) induced a lower concentration of sugars with a value >3 mg/ml during the first crop cycle, it were analyzed during the flowering stage, and in the second agricultural cycle, during the fruiting stage it was < 4 mg/ml.

scholarly journals EFEK SUB LETHAL AMONIA AMBIEN TERHADAP HISTOPATOLOGIS IKAN NILA (Oreochromis niloticus) YANG DIPELIHARA DALAM SISTEM BIOFLOK

2020 ◽  
Vol 8 (1) ◽  
pp. 84-101
Author(s):  
Sumoharjo Sumoharjo ◽  
Sulistyawati Sulistyawati
Keyword(s):  
Nile Tilapia ◽  
Histopathological Examination ◽  
Ammonia Concentration ◽  
Ammonia Nitrogen ◽  
Histopathological Changes ◽  
Total Ammonia Nitrogen ◽  
Start Up ◽  
Unionized Ammonia ◽  
Total Ammonia ◽  
Liver And Kidney

The purpose of this research were to measure the increasing of unionized ammonia during start-up period of biofloc system for growing Nile Tilapia and to figure out its effect on histopathological changes. There was only one treatment that designed with three replication, which was 40 liters of water that contained eight fishes of each weighed 22.. The biofloc system was treated with C/N ration 12:1. Total Ammonia Nitrogen, pH and temperature were measured daily as long as 14 days. the tissue of gill, liver and kidney were cut off at the end of the experiment for histopathological examination. The result of the experiment showed that the peak of unionized ammonia concentration achieved 0.34±0.05 mg/l at 10th day. Then, decreased rapidly to 0.003±0.0009 mg/l at 14th day. The gill, liver, and kidney had regressive changes as physiologic sub lethal response of unionized ammonia expose. Keywords : Biofloc, unionized ammonia, Nile Tilapia, histopatholocal

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