scholarly journals Profitability of Using Commercial Tilapia Feed to Produce Three Different Sizes of Nile Tilapia (Oreochromis niloticus L.) Fingerlings in Ghana

2021 ◽  
pp. 10-17
Author(s):  
F. A. Anani ◽  
E. Agbeko ◽  
P. D. K. Atsakpo ◽  
M. Johnson-Ashun ◽  
L. K. Osei ◽  
...  
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Fish Growth ◽  
Fine Mesh ◽  
Randomized Design ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Body Weights ◽  
Weight Gains ◽  
Completely Randomized Design ◽  
Individual Body

Aims: To determine the profitability of using a commercial tilapia feed to produce three different size ranges (1.0-1.9, 2.0-2.9 and 5.0-5.9 g) of Nile tilapia, Oreochromis niloticus fingerlings in hapa-in-pond system. Study Design: Completely randomized design. Place and Duration of Study: The Aquaculture Research and Development Centre (ARDEC), Akosombo, of Water Research Institute (WRI) of Council for Scientific and Industrial Research (CSIR), Ghana, from March to May, 2020. Methodology: Fish growth study was carried out in three (3) fine mesh netting hapas, each of dimensions 5.0 x 2.0 x 1.2 m. Nile tilapia fry at initial mean weight 0.03 ± 0.01 g were stocked at a density of 50 fish m-2 and they were fed at 20 % body weight five times daily. The feeding of the fish continued until those in all the 3 hapas attained a mean weight of at least 5.0 g. Then the experiment was terminated and all the survived fish in each hapa were harvested, counted, and their individual body weights were measured. Growth performance indicators and profitability of producing the various size categories (1.0-1.9, 2.0-2.9 and 5.0-5.9) were determined. Results: The fry attained the target size ranges of 1.0-1.9, 2.0-2.9 and 5.0-5.9 g in 4, 6 and 9 weeks respectively. There were significant differences (ANOVA, P = 0.03) among final mean weights, weight gains, feed intakes, daily weight gains, feed efficiencies and harvested biomass among all size ranges, with those of 5.0-5.9 g being significantly higher (Tukey’s HSDT, P < 0.02). Sizes of fingerlings produced correlate positively with cost of feed used. The profit indices ranged from 2.57 to 10.22, with the highest recorded in the 1.0-1.9 g fingerlings and the least in those of 5.0-5.9 g. Conclusion: The results indicated that, at the current Nile tilapia fingerlings cost and the time taken to produce the various size categories, the 1.0-1.9 g production is the most profitable.

scholarly journals Masculinization of Nile tilapia (Oreochromis niloticus) by administration of bull testes meal

2011 ◽  
Vol 10 (1) ◽  
pp. 51-58
Author(s):  
Muslim Muslim ◽  
M. Zairin Junior ◽  
Nur Bambang Priyo Utomo
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Fish Growth ◽  
Feed Additive ◽  
Male Population ◽  
Randomized Design ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Two Factors ◽  
Group Survival ◽  
Completely Randomized Design

The synthetic steroid 17α-Methyltestosteron (MT) is commonly used as a feed additive to produce male population of Nile tilapia (Oreochromis niloticus). The use of synthetic testosterone hormone is not recommended in Indonesia. This study was conducted to evaluate the effect of natural testosterone hormone in bull testes meal (BTM) on the masculinization of Nile tilapia using validated aceto carmine squash method of gonads of the fish. Experimental design was utilized two factors experiments in completely randomized design. Fry kept in 40-L glass aquaria at a density of 40 fry/aquarium. Fry (7 dph) received the BTM  for 7 days (T1), 14 days (T2) and 21 days (T3) and doses 0% (D1), 3% (D2), 6% (D3), and 9% (D4).  When treatment was these results, indicated that significant (P≥0.05) masculinization occurred only in the group treated of BTM and no treated of BTM. In the group treated of BTM, doses and duration treatment is not significant. The percentage of male fish 83.3% (9%-7d, 9%-21d, 6%-21d: doses and duration, respectively), higher than all group. Survival rate of fry (95-99.5%) is not affected by treatment BTM (no significant P≥0.05). Fish growth was significantly affected by treatment BTM compare with no treated of BTM. The highest growth performance of fry were obtained with the 9% BTM.Key words: masculinization, nile tilapia, bull testes meal ABSTRAKSteroid sintetik 17α-Methyltestosteron (MT) umumnya digunakan sebagai aditif pakan untuk menghasilkan populasi ikan nila jantan (Oreochromis niloticus). Penggunaan hormon testosteron sintetis tidak dianjurkan di Indonesia. Penelitian ini dilakukan untuk mengevaluasi pengaruh hormon testosteron alami dalam makanan testis banteng (BTM) pada maskulinisasi ikan nila menggunakan metode divalidasi aceto carmine squash, dari gonad ikan. Desain eksperimental dimanfaatkan dua eksperimen faktor dalam desain benar-benar acak. Fry disimpan dalam 40-L akuarium kaca pada kepadatan 40 fry/akuarium. Fry (7 DPH) menerima BTM selama 7 hari (T1), 14 hari (T2) dan 21 hari (T3) dan dosis 0% (D1), 3% (D2), 6% (D3), dan 9% (D4). Ketika pengobatan hasil ini, menunjukkan signifikan (P ≥ 0,05) hanya terjadi maskulinisasi pada kelompok perlakuan dari BTM dan tidak diperlakukan BTM. Pada kelompok diobati BTM, dosis dan durasi pengobatan tidak signifikan. Persentase ikan jantan 83,3% (9%-7d, 9%-21d, 6%-21d: dosis dan durasi, masing-masing), lebih tinggi dari kelompok semua. Tingkat kelangsungan hidup benih (95-99,5%) tidak dipengaruhi oleh pengobatan BTM (tidak ada P yang signifikan ≥ 0,05). Pertumbuhan ikan secara signifikan dipengaruhi oleh BTM pengobatan dibandingkan dengan tidak diobati BTM. Kinerja pertumbuhan tertinggi fry diperoleh dengan BTM 9%.Kata kunci: maskulinisasi, ikan nila, tepung testis sapi 

scholarly journals UTILIZATION OF TOFU AND TAPIOCA INDUSTRIAL LIQUID WASTE FOR NILE TILAPIA (Oreochromis niloticus) CULTURE WITHIN DIFFERENT BIOFLOC SYSTEMS

2018 ◽  
Vol 7 (1) ◽  
pp. 763
Author(s):  
Suryo Kunindar ◽  
Eko Efendi ◽  
Supono Supono
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Liquid Waste ◽  
Daily Growth Rate ◽  
Daily Growth ◽  
Randomized Design ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Absolute Growth ◽  
Completely Randomized Design ◽  
Culture Container

Liquid waste produced by tofu and tapioca industry was approximately 1,5-2 m3 and 4-6 m3 per day respectively. Tapioca liquid waste has concentration of carbon around 119,11 mg/l, while tofu liquid waste has around 133,03 mg/l of nitrogen in concentration. Therefore both of these waste have the potential to be used as biofloc that utilized as additional feed with high protein content for nile tilapia. The aim of this research was to know interaction between C/N ratio and place of biofloc production to the growth of nile tilapia. This research used completely randomized design based on factorial experiment which consisted of two level of each factor and three repetition. Level of C/N ratio were 15 and 20 whereas level of place of biofloc production were inside and outside fish culture container. The result of this research showed that interaction between place of biofloc production and C/N ratio affected the growth of nile tilapia. The treatment inside biofloc production with 20 C/N ratio gave provided the highest absolute growth (3,26 g) and daily growth rate (0,082 g per day).

scholarly journals PEMBERIAN PAKAN KOMERSIL DENGAN PENAMBAHAN PROBIOTIK YANG MENGANDUNG Lactobacillus sp. TERHADAP KECERNAAN DAN PERTUMBUHAN IKAN NILA (Oreochromis niloticus) (THE ADDITION OF PROBIOTICS CONTAINING Lactobacillus Sp. IN THE COMMERCIAL ON DIGESTIBILITY AND GROWTH OF NILE TILAPIA (OREOCHROMIS NILOTICUS)

2016 ◽  
Vol 2 (4) ◽  
pp. 178
Author(s):  
Sri Ramadhana ◽  
Noor Arida Fauzana ◽  
Pahmi Ansyari
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Nutritional Content ◽  
Length Growth ◽  
Environmental Friendly ◽  
Randomized Design ◽  
Commercial Feed ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Effective Doses ◽  
Completely Randomized Design

Tujuan dari penelitian ini adalah untuk mengetahui efek pemberian probiotik yang mengandung Lactobacillus sp. dalam pakan komersial terhadap kualitas pakan, meningkatkan jumlah bakteri dalam mukosa usus dan kecernaan ikan melalui pemberian pakan probiotik yang ramah lingkungan, mengetahui dosis efektif probiotik dalam pakan yang dapat menunjang pertumbuhan ikan nila (Oreocromis niloticus). Penelitian ini dilaksanakan selama 6 (enam) bulan, mulai bulan September 2012 sampai Februari 2013. Rancangan yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap dengan 4 (Empat) perlakuan dan 3 (Tiga) ulangan, yaitu perlakuan A (Kontrol), B (Probiotik 3%), C (Probiotik 5%) dan D (Probiotik 7%).Hasil penelitian menunjukkan bahwa pemberian pakan dengan penambahan probiotik yang mengandung Lactobacillus sp. menggunakan dosis sebesar 3%, 5% dan 7% mampu meningkatkan kandungan gizi, pakan, dengan nilai protein antara 32,48%-34,19% dan menurunkan serat kasar dengan nilai antara 5,04%-5,70% dibandingkan tanpa pemberian probiotik. Pemberian probiotik dalam pakan dengan persentase 3%, 5%, dan 7% dapat meningkatkan kecernaan ikan nila pakan efektif untuk meningkatkan pertumbuhan berat dan panjang ikan nila.The purpose of this research was to determine the effect of probiotics in commercial feed on feed quality, enhance increase bactery number in gut mucose and digestibility of nile tilapia (Oreocromis niloticus) through the provision of environmental friendly probiotic feed, determine  the effective doses of probiotics infeed that can support the growth fish. The research was conducted for 6 (six) months, from September 2012 until February 2013. The design used in this study was completely randomized design with 4 (four) treatments and 3 (three) replicates, were treatment A (control), B (Probiotics 3%), C (Probiotics 5%) and D (Probiotic 7%).The results showed that the addition of probiotic containing Lactobacillus sp. feeding with doses of 3%, 5% and 7% were able to improve the nutritional content, protein values between 32,48%-34,19% and lower crude fiber with values between 5,04-5,70% compared with no probiotics. The addition of probiotics in feed with a percentage of 3%, 5%, and 7% can increase digestibility of nile tilapia and effective to increase the nile weight and length growth of nile tilapia.

scholarly journals Growth of Nile tilapia Oreochromis niloticus fed diets with different levels of proteins of yeast

2009 ◽  
Vol 52 (3) ◽  
pp. 721-728 ◽  
Author(s):  
Vandir Medri ◽  
Waldir Medri ◽  
Mauro Caetano Filho
Keyword(s):  
Weight Gain ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Food Conversion ◽  
Yeast Protein ◽  
Quadratic Effect ◽  
Randomized Design ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Completely Randomized Design ◽  
Different Levels

This experiment was based on observations of 72 juveniles of Nile tilapia (Oreochromis niloticus), sexually reverted with an initial mean weight of 37.27 ± 4.92g, distributed in 12 cages of 100 l to evaluate the effects of the yeast inclusion as proteins source in the diet. The fishes were distributed in a completely randomized design with four treatments (0; 20; 40; and 60%) of yeast protein in substitution to the protein of traditional sources with three repetitions. Effects of the treatments were not observed (p > 0.05) on the survival and to food conversion. It was observed a quadratic effect on weight gain (Y = 73.39 + 0.173X - 0.0034X²; R²= 0.9986). It was concluded the best level of yeast inclusion as source proteins in the diet for reversed Nile tilapia juvenile was 25.44%.

scholarly journals The Duckweed, Lemna minor Modulates Heavy Metal-Induced Oxidative Stress in the Nile Tilapia, Oreochromis niloticus

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2983
Author(s):  
Fagr Kh. Abdel-Gawad ◽  
Wagdy K. B. Khalil ◽  
Samah M. Bassem ◽  
Vikas Kumar ◽  
Costantino Parisi ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Heavy Metal ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Lemna Minor ◽  
Fish Growth ◽  
High Dose ◽  
Gene Expressions ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Cu And Zn

A two-fold integrated research study was conducted; firstly, to understand the effects of copper (Cu) and zinc (Zn) on the growth and oxidative stress in Nile tilapia, Oreochromis niloticus; secondly, to study the beneficial effects of the duckweed Lemna minor L. as a heavy metal remover in wastewater. Experiments were conducted in mesocosms with and without duckweed. Tilapia fingerlings were exposed to Cu (0.004 and 0.02 mg L−1) and Zn (0.5 and 1.5 mg L−1) and fish fed for four weeks. We evaluated the fish growth performance, the hepatic DNA structure using comet assay, the expression of antioxidative genes (superoxide dismutase, SOD; catalase, CAT; glutathione peroxidase, GPx and glutathione-S-transferase, GST) and GPx and GST enzymatic activity. The results showed that Zn exhibited more pronounced toxic effects than Cu. A low dose of Cu did not influence the growth whereas higher doses of Cu and Zn significantly reduced the growth rate of tilapia compared to the control, but the addition of duckweed prevented weight loss. Furthermore, in the presence of a high dose of Cu and Zn, DNA damage decreased, antioxidant gene expressions and enzymatic activities increased. In conclusion, the results suggest that duckweed and Nile tilapia can be suitable candidates in metal remediation wastewater assessment programs.

scholarly journals Effect of size heterogeneity of Nile tilapia (Oreochromis niloticus) on the optimal harvest time: a bioeconomics approach

2020 ◽  
Vol 48 (1) ◽  
pp. 65-73
Author(s):  
Patricia Borrego Kim ◽  
Mariel Gullian Klanian ◽  
Juan Carlos Seijo
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Market Size ◽  
Harvest Time ◽  
Economic Decisions ◽  
Randomized Design ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Body Sizes ◽  
Size Heterogeneity ◽  
Size Dispersion

A critical problem in the production of Nile tilapia Oreochromis niloticus in intensive and hyper-intensive systems is the heterogeneity of body sizes as it influences the final production and economic yield. The objective of this study was to calculate the bioeconomic effect of size heterogeneity on the production of Nile tilapia at a commercial level and to determine the optimum harvest time (OHT) considering four minimum marketable sizes target (Mms = 350, 400, 450, 500 g). Two seeding strategies were evaluated: homogeneous seeding (HM) with a 96.55 ± 24.51 g initial body weight and heterogeneous seeding (HT) with a 100.17 ± 5.91 g initial weight. Fish from both treatments were stocked at 40 fish m-3 in triplicate using a randomized design. The calculated quasi-profits of variable costs showed an inversely proportional relationship with the minimum market size in both groups. The smaller size dispersion in HM generated higher profits than HT. The OHT for Mms [350, 500 g] of HM population was 180 days, with a mode of 641 g. The OHT was also 180 days for the HT population but only for the Mms [350, 400 g] and a mode of 578 g. In terms of quasi-profits, the HM produced 19.93% more quasi-profit than the HT in the market size of 350 g at 180 days (HM = 0.50 US$ kg-1; HT = 0.44 US$ kg-1). The simple bioeconomic model presented here can help producers manage a series of economic decisions associated with OHT, when targeting different market segments requiring different Mms.

scholarly journals Pemberian Tepung Limbah Udang Yang Difermentasi Dalam Ransum Pakan Buatan Terhadap Laju Pertumbuhan, Rasio Konversi Pakan Dan Kelangsungan Hidup Benih Ikan Nila (Oreochromis niloticus) [The Given Fermentation The Prawn Waste Flour In Artificial Feed On Growth, Feed Convertion Ratio And Survival Rate Of Black Nile Tilapia (Oreochromis niloticus) ]

2019 ◽  
Vol 1 (2) ◽  
pp. 157
Author(s):  
Agustono, Muhammad Hadi, Yudi Cahyoko
Keyword(s):  
Survival Rate ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Feed Conversion ◽  
Design Data ◽  
Randomized Design ◽  
Nile Tilapia Oreochromis Niloticus ◽  
The Given ◽  
Range Test ◽  
Prawn Waste

AbstractThe aim of this research was to find out optimum percentage of given fermentation the prawn waste flour in artificial feed on growth of black nile tilapia. The treatment of this research was giving fermentation the prawn waste flour in artificial feed i.e. 0%, 2,5%, 5%, 7,5%, 10%. Each treatment was repeated 4 times. Feed compositon was made of isoprotein. Fishes weight were about 6.1 – 6.8 g. Fishes were cultured with stocking rate 3 fish per 20 liter water and the fishes were reared for 40 days. Feed amount that consumed by fishes was measured every day to calculate feed conversion ratio. The calculation of fishes amount was done in beginning and end of research to count survival rate of fishes. Water quality was measured on beginning, middle and end of research. The design of this research was Completely Randomized Design. Data analysis used Analysis of Variance (ANOVA) to know the effect of the treatment and that difference among the treatment used Duncan's Multiple Range Test (DMRT). The result of the research showed that the highest growrth rate were attained on feed containing 10% of fermented prawn waste flour. The best feed convertion ratio were attained on feed containing 10% of fermented prawn waste flour.

Effect of Nile Tilapia (Oreochromis niloticus) on the Ecosystem of Aquaculture Ponds, and Its Significance to the Trophic Cascade Hypothesis

1991 ◽  
Vol 48 (2) ◽  
pp. 183-190 ◽  
Author(s):  
James S. Diana ◽  
Daniel J. Dettweiler ◽  
C. Kwei Lin
Keyword(s):  
Trophic Level ◽  
Oreochromis Niloticus ◽  
Trophic Cascade ◽  
Nile Tilapia ◽  
Trophic Levels ◽  
Fish Growth ◽  
Chicken Manure ◽  
Zooplankton Abundance ◽  
Fish Yield ◽  
Nile Tilapia Oreochromis Niloticus

The trophic cascade hypothesis holds that an increase in fish biomass causes a decline in food organisms of the fish, which cascades down to regulate lower trophic levels by altered consumptive demands. This hypothesis was evaluated by stocking Nile tilapia (Oreochromis niloticus) at densities of 0, 1, 2, or 3 fish/m3 in triplicated 220-m3 ponds near Bangkok, Thailand. All ponds were fertilized with 500 kg chicken manure∙ha−1∙wk−1. We measured phosphorus, nitrogen, chlorophyll a, primary productivity, zooplankton abundance, and fish yield in all ponds. Increased stocking density resulted in decreased adult fish growth but similar yields among the three density treatments. Regressions relating the abundance of each trophic level to the next higher trophic level were either positive or nonsignificant, which is contrary to trophic cascade predictions. Zooplankton became significantly more dense over time in fishless ponds than the other three treatments, but no other trophic level differed among treatments. These results indicate that presence of fish had a significant effect on zooplankton in ponds, but biomass of fish or abundance of zooplankton did not significantly affect other trophic levels.

scholarly journals Supplementation with arginine in the diet of Nile tilapia reared in net cages

2019 ◽  
Vol 54 ◽  
Author(s):  
Rodrigo Yudi Fujimoto ◽  
Rudã Fernandes Brandão Santos ◽  
Gabriela Pala ◽  
Sílvia Umeda Gallani ◽  
Gustavo Moraes Ramos Valladão ◽  
...  
Keyword(s):  
Immune System ◽  
Nile Tilapia ◽  
Fish Growth ◽  
Immunological Parameters ◽  
Morphological Aspects ◽  
Randomized Design ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Net Cages ◽  
Arginine Concentration ◽  
Arginine Supplementation

Abstract: The objective of this work was to evaluate the effect of dietary arginine concentrations on the health status of Nile tilapia (Oreochromis niloticus) cultivated in cages. The experiment was carried out in a completely randomized design with four treatments (2.3, 2.9, 3.5, and 4.1% arginine in dry matter) and three replicates, in 12 net cages of 8 m3, containing 4,000 sexually reverted tilapia (63±20 g, at 500 fish m-3). Fish productive performance and health were evaluated. Biochemical, hematological, and immunological parameters, as well as the morphological aspects of gills and liver, were evaluated. Arginine inclusion did not cause significant differences in fish growth performance. However, arginine supplementation at 3.5% concentration improved the biochemical parameters and leucocyte counts, consequently improving the immune system. The arginine concentration of 4.1% caused lipid degeneration, shown by the increase of alanine aminotransferase and the decrease of albumin, urea, lactate, and glucose. Arginine supplementation above 2.3% and below 3.5%, in the diets of tilapia reared in cages, improves fish immune system, without adverse morphological and physiological effects.

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