scholarly journals Growth performance of siamese gourami Trichopodus pectoralis seed with different stocking density to optimize production capacity: optimum temperature and salinity application

2018 ◽  
Vol 47 ◽  
pp. 02007
Author(s):  
Lies Setijaningsih ◽  
Dewi Puspaningsih ◽  
Imam Taufik
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Specific Growth Rate ◽  
Growth Performance ◽  
Specific Growth ◽  
Production Capacity ◽  
Stocking Density ◽  
Optimum Temperature ◽  
Slow Growth Rate ◽  
Randomized Design

Fulfill needs of Siamese gourami still rely on the catch from nature, so the population in nature has become decreased. The increase of Siamese gourami fish production from culture is still constrained by the survival rate and slow growth rate in the seed phase. The purpose of this research was to determine the effect of Siamese gourami stocking density on the application of optimum temperature and salinity to growth performance for optimization of production capacity. Application of optimum temperature and salinity refers to the results of previous research, i.e., temperature of 28 °C and salinity 3 ‰. Siamese gourami seed with length of 2.96 ± 0.42 cm and weight of 5.27 ± 0.10 g used in the research. The experimental design used completely randomized design with four treatments, i.e. 1 fish L-1, 2 fish L-1, 3 fish L-1 and 4 fish L-1. The results showed that there were an effect of different stocking density on absolute growth weight and length, survival rate, specific growth rate and productivity. This is shown in the C treatment which growth was 4.95 ± 0.037 g, length 3.51 ± 0.01 cm, survival rate 93.47%, specific growth rate 1.22% and fish productivity of 625.76 g.

scholarly journals PERTUMBUHAN DAN SINTASAN HIDUP IKAN NILA DENGAN PENAMBAHAN TEPUNG WORI (Ormocarpum cochinchinense) FERMENTASI DALAM PAKAN

2021 ◽  
Vol 7 (2) ◽  
pp. 1-6
Author(s):  
Numisye Iske Mose ◽  
Jetti Treslah Saselah
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Specific Growth Rate ◽  
Specific Growth ◽  
Fish Growth ◽  
Utilization Efficiency ◽  
Fish Feed ◽  
Randomized Design ◽  
Leaf Powder ◽  
Feed Utilization Efficiency

Tanaman wori merupakan salah satu tanaman kelompok fabaceace yang tumbuh melimpah di Sangihe dan sangat potensial digunakan sebagai salah satu sumber pakan ikan. Kadar protein daun wori adalah 25,53% sehingga berpotensi menjadi protein nabati bagi ikan. Kendala utama yang ditemui ketika memanfaatkan daun tanaman wori adalah kandungan karbohidrat yang tinggi yaitu 48,51% sehingga dapat mempengaruhi proses pencernaan ikan, penyerapan nutrisi yang berujung pada rendahnya pertumbuhan ikan. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh tepung daun wori femerntasi terhadap laju pertumbuhan spesifik dan sintasan hidup ikan nila. Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap (RAL). Perlakuan yang dilakukan terdiri dari tiga perlakuan dan tiga kali ulangan yaitu kadar tepung daun wori tanpa fermentasi A (kontrol) 10%, kemudian B tepung daun wori fermentasi (10%), dan C tepung daun wori fermentasi (20%). Laju pertumbuhan spesifik dan efisiensi pakan diuji menggunakan ANOVA sedangkan sintasan hidup akan dianalisis secara deskriptif. Hasil penelitian ini menunjukan bahwa penambahan tepung wori fermenasi dalam pakan dapat meningkatkan nilai laju pertumbuhan spesfik ikan nila dan efisiensi pemanfaatan pakan dengan nilai tertinggi pada perlakuan C yaitu SGR 1,94%/hari. Sementara itu, untuk semua perlakuan nilai sintasan hidup sebesar 100%.   The wori plant is one of the plants of the fabaceace group that grows abundantly in Sangihe and has potential to be used as a source of fish feed. The protein content of wori leaves is 25.53%, so it has the potential to become vegetable protein for fish. The main obstacle encountered when utilizing wori plant leaves is the high carbohydrate content of 48.51% so that it can affect the digestion process of fish, nutrient absorption which lead to low fish growth. The purpose of this study was to determine the effect of wori femerntation leaf meal on the specific growth rate and survival of tilapia. The experimental design used was a completely randomized design (CRD). The treatments consisted of three treatments and three replications, namely the content of fermented wori leaf powder, A (control) 10%, then B fermented wori leaf powder (10%), and C fermented wori leaf powder (20%). Specific growth rate and feed efficiency were tested using ANOVA, while survival rate was analyzed descriptively. The results of this study indicate that the addition of fermented wori powder in the feed can increase the value of the specific growth rate of tilapia and feed utilization efficiency with the highest value in treatment C, namely SGR 1.94% / day. Meanwhile, for all treatments the survival rate was 100%.

scholarly journals Pengaruh Pemberian Probiotik Berbeda dalam Sistem Akuaponik terhadap Laju Pertumbuhan dan Survival Rate Ikan Lele (Clarias sp.)

2017 ◽  
Vol 1 (1) ◽  
Author(s):  
Ayu Herdianti Primashita ◽  
Boedi Setya Rahardja ◽  
Prayogo .
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Survival Rate ◽  
Specific Growth Rate ◽  
Water Use ◽  
Specific Growth ◽  
Final Conclusion ◽  
Randomized Design ◽  
Business Efficiency ◽  
Range Test

Catfish (Clarias sp.) is a freshwater fish that is widely cultivated because it is a leading commodity. Increased production of catfish resulted in extra area of cultivated land and water use. The technology suitable to be applied is aquaponic system. In addition to saving land and water use, Aquaponic is also improving business efficiency through the utilization of nutrients from food remains and fish metabolism. Water quality is an important factor for the success of cultivation. Maintenance catfish with the addition of probiotics in aquaponic system can be a solution for maintaining water quality, because it contains bacteria that can increase nitrite to nitrate changes that can be utilized for growth of plants and do not poison the fish. The purpose of this study was to determine the effect of different probiotics in the aquaponic system towards growth rate and survival rate of catfish. The method that used in this research is experimental with completely randomized design (four  treat and five repeated) are P0 (control), P1 (probiotic A), P2 (probiotic B) and P3 (probiotic C). Analysis of data processed using Analysis of Variance. If there are significant differences then continued Duncan's Multiple Range Test. The results showed that the giving of probiotics in the aquaponic system is significantly different (p <0.05). The final conclusion is that the addition of probiotics in  aquaponic system affect the growth rate and survival rate of catfish. The highest specific growth rate (0.025%/ day) and the highest survival rate (77.8%) contained in the P2 treatment. The lowest specific growth rate (0.019% /day) and the lowest survival rate (64.4%) contained in P0 treatment (control). Keywords : Aquaponic, Catfish, Probiotic, Growth Rate, Survival Rate, Clarias sp.

scholarly journals Evaluation of larvae production and growth of juvenile red tilapia NIFI F1 during the nursery phase

2019 ◽  
Vol 18 (3) ◽  
pp. 251
Author(s):  
Adam Robisalmi ◽  
Priadi Setyawan ◽  
Bambang Gunadi
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Specific Growth Rate ◽  
Seed Production ◽  
Specific Growth ◽  
Stocking Density ◽  
Brood Stock ◽  
Female Ratio ◽  
Red Tilapia ◽  
Ad Libitum

Genetic quality improvement can be done through breeding programs. The indicator of success in the selection is the improvement of the character of production. Larval production and growth of NIFI of F1generation red tilapia seeds in the selection and its control parents were evaluated in this study. The research was conducted at the Fish Breeding Research Center for four months. Spawning was carried out on freshwater ponds of cage with size of  1 x 1 m. Tilapia brood stock were stocked with male to female ratio of 1: 1. The larvae rearing were conducted in the cage with size 2x2x1 m3 and stocking density 125 m-2. Pellets with a protein content of 38-40% are given to ad libitum larvae three times a day for first month, and then feeding rate was given 15-20% daily from biomass. Seed production, growth, specific growth rate, and survival rate were observed. The results of the experiment show a difference between fish selected and control. Seed production of selection reached 540 ± 114 and controls   508 ± 142. The growth performance of selected red tilapia juvenile showed higher compared with the control. The mean length  of  selected population  reached 6.33 ± 0.43 cm , weight gain 6.60 ± 0.52 g, specific growth rate 7.33 ± 0% g days-1 and survival rate  81.50 ± 4.46% were respectively and the control population  5.76 ± 0.52 cm ; 4,90 ± 0.58 g; 4.50 ± 0.35% g days-1; and 74.85 ± 3.26%. These values indicate that the growth of red tilapia juvenile NIFI F1 generation was increased 25.76%.AbstrakSalah satu upaya yang dapat dilakukan untuk meningkatkan kualitas genetik yaitu melalui program pemuliaan. Per-baikan karakter reproduksi dan pertumbuhan dapat digunakan sebagai indikator keberhasilan seleksi. Penelitian ini bertujuan untuk mengevaluasi produksi larva dan pertumbuhan benih ikan nila merah NIFI F1 dari induk seleksi dan kontrol. Kegiatan dilaksanakan selama empat bulan di Balai Riset Pemuliaan Ikan. Pemijahan dilakukan di kolam air tawar pada hapa 1 m x1 m.  Perbandingan induk ikan nila jantan dan betina 1:1. Larva yang sudah dipanen dimasukkan pada hapa pendederan ukuran 2x2x1 m3 dengan padat tebar 125 ekor m-2 . Selama pendederan , larva diberi pakan (protein 38-42%) secara ad libitum tiga kali sehari pada bulan pertama dan selanjutnya diberi pakan dua kali sehari 15-20% dari biomassa. Pakan yang diberikan selama pendederan mempunyai protein berkisar 38-42%. Parameter yang diamati meliputi produksi larva, pertumbuhan, laju pertumbuhan spesifik, dan sintasan. Hasil penelitian menunjukkan produksi larva ikan nila merah seleksi yaitu 540±114 ekor dan kontrol 508±142 ekor. Performa pertumbuhan benih ikan nila merah seleksi menunjukkan hasil yang lebih tinggi dibanding kontrol dengan nilai pertumbuhan panjang 6,33 ±0,43cm, pertumbuhan bobot 6,60±0,52 g, laju pertumbuhan spesifik 7,33±0% g hari-1 serta sintasan 81,50±4,46%, se-dangkan populasi kontrol masing-masing 5,76±0,52 cm; 4,90±0,58 g; 4,50±0,35% g hari-1; dan 74,85±3,26%. Nilai ini menunjukkan bahwa ada peningkatan pertumbuhan sebesar 25,76% pada benih ikan nila merah NIFI F1.

scholarly journals Pengaruh Pemberian Kapur Pada Air Gambut Terhadap Kelangsungan Hidup Dan Pertumbuhan Benih Ikan Gabus (Channa striata)

2021 ◽  
Vol 6 (1) ◽  
pp. 19
Author(s):  
Shinta S Monalisa ◽  
Maryani Maryani ◽  
Kamisa Rumapea
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Specific Growth Rate ◽  
Specific Growth ◽  
Feed Conversion ◽  
Weight Growth ◽  
Randomized Design ◽  
Channa Striata ◽  
Completely Randomized Design ◽  
Specific Growth Rates

This research was conducted to determine the effect of giving different lime on the survival rate and growth of snack head seeds. This writing uses a completely randomized design (CRD) with 4 treatments and 3 replications. The hypothesis being tested was that the application of the limed lime had no significant effect on survival rate, the growth of snack head seed and the specific growth rate and lime administration differed significantly in feed conversion. The study was conducted at the Wet Aquaculture Laboratory, Palangka Raya University starting from February 3 - March 3, 2020. The results showed that the administration of different lime had no significant effect on survival rate, growth and specific growth rates but had a significant effect on feed conversion. The best survival rate of snack head seeds is in treatment D (250 g) that is equal to 57.73%, the best weight growth is in treatment C (200 G) that is equal to 3.16 grams, the best length growth is in treatment D (250 g) that is 2.57 cm, the best specific growth rate is in treatment D (250 g) which is 2.92% / day, and the best feed conversion value is in treatment D (250 g) which is 1.47%. Water quality such as temperature, acidity (pH) and dissolved oxygen (DO) are still in the normal range.

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 PERFORMA PERTUMBUHAN BENIH IKAN SEMAH (Tor douronensis) GENERASI PERTAMA DENGAN PADAT TEBAR BERBEDA DI KARAMBA JARING APUNG

2021 ◽  
Vol 16 (1) ◽  
pp. 7
Author(s):  
Jojo Subagja ◽  
Otong Zenal Arifin ◽  
Kurniawan Kurniawan ◽  
Vitas Atmadi Prakoso
Keyword(s):  
Growth Rate ◽  
Weight Gain ◽  
Survival Rate ◽  
Specific Growth Rate ◽  
Specific Growth ◽  
Stocking Density ◽  
Commercial Diet ◽  
Cage System ◽  
Net Cage ◽  
Net Cages

Ikan semah (Tor douronensis) termasuk salah satu spesies dari genus Tor yang memiliki nilai ekonomis tinggi. Untuk meningkatkan produktivitas, informasi pertumbuhan benih yang dipelihara pada sistem budidaya karamba jaring apung (KJA) perlu dilakukan karena ikan semah umumnya dibudidayakan pada kolam dengan air yang jernih. Penelitian ini bertujuan untuk mendapatkan informasi laju pertumbuhan benih ikan semah generasi pertama dengan perlakuan padat tebar yang berbeda pada sistem pemeliharaan KJA. Percobaan dilakukan di Waduk Cirata, Cianjur, Jawa Barat selama lima bulan. Ikan uji (panjang total: 7-8 cm; bobot: 5-6 g) dipelihara di KJA (padat tebar 50, 75, dan 100 ekor/m3 dengan tiga kali ulangan). Pakan apung komersial dengan kadar protein 40% diberikan sebesar 6% per biomassa yang diberikan dua kali sehari. Parameter yang diamati yaitu pertumbuhan bobot mutlak, sintasan, laju pertumbuhan spesifik (SGR), dan biomassa. Hasil percobaan menunjukkan bahwa perlakuan padat tebar 50 ekor/m3 menghasilkan pertumbuhan terbaik dengan bobot akhir 15,89 ± 1,43 g; pertambahan mutlak 10,48 ± 1,41 g; sintasan 94,67 ± 4,6%; dan SGR 0,75 ± 0,04%. Dari hasil penelitian ini, padat tebar 50 ekor/m3 merupakan kondisi yang terbaik untuk pemeliharaan benih ikan semah di KJA. Hasil penelitian ini dapat dijadikan informasi awal tentang potensi budidaya ikan semah dengan sistem budidaya KJA perlu dikembangkan di masa yang akan datang.Semah mahseer (Tor douronensis) is a species from the genus Tor and highly valued in local and national markets. Nevertheless, the fish production from net cage is currently limited. In order to increase its productivity, research on the growth of semah mahseer fingerlings reared in floating net cage systems needs to be carried out as this species is predominantly cultured in the clean water ponds. This study was conducted to obtain information on the growth performance of the first generation of semah mahseer fingerlings reared with different stocking densities in a floating net cage system. The experiment was carried out in the floating net cage located at Cirata Reservoir, Cianjur, West Java, for five months. Fingerlings (total length: 7-8 cm; body weight: 5-6 g) were reared in the floating net cage (stocking density of 50, 75, and 100 ind./m3 with three replications). The fish were fed with a commercial diet (protein content of 40%) given at 6% of biomass twice a day. The parameters observed included weight gain, survival rate, specific growth rate (SGR), and biomass. The results showed that the stocking density of 50 ind./m3 had the best performance in terms of final weight of 15.89 ± 1.43 g, weight gain of 10.48 ± 1.41 g, survival rate of 94.67 ± 4.6%, and specific growth rate of 0.75 ± 0.04%. Based to the results of this study, the stocking density of 50 ind./m3 is the best condition for rearing semah mahseer fingerlings in floating net cages. The findings of this research can be used as the basic information for future aquaculture development of semah mahseer in net cages.

scholarly journals EFFECT OF STOCKING DENSITY ON THE GROWTH PERFORMANCE OF RED TILAPIA IN ZEOLITE SUPPLEMENTED CLOSED SYSTEM

2021 ◽  
Vol 83 (5) ◽  
pp. 85-92
Author(s):  
Ku Boon Hong ◽  
Musfiroh Jani ◽  
Rabiatul Adawiyah Meor Mohamad Zain ◽  
Norashikin Mohd Fauzi
Keyword(s):  
Growth Rate ◽  
Specific Growth Rate ◽  
Growth Performance ◽  
Closed System ◽  
Specific Growth ◽  
Stocking Density ◽  
World Population ◽  
Red Tilapia ◽  
Significant Difference ◽  
Length Gain

Food demand is expected to surge due to the increase of world population. Malaysia is one of the top fish consumption countries in Asia, but the reduction of capture fishery has led to the increase for aquaculture for tilapia to overcome the demand. Thus, the objective of this study was to compare the growth performance of red tilapia at different stocking densities of zeolite supplemented closed system. Red tilapia fry was stocked into aquarium. Five treatments (containing zeolite and without zeolite) with two replicates were used. Food was given twice a day with 2% of total biomass of the fish. Weight and length of red tilapia were measured every two weeks. The zeolite treatments which recorded the highest final mean weight was T1 with the lowest stocking density (5 fish) while in T5 (highest stocking density), lowest mean weight was recorded. Specific growth rate and length gain in T1 was significantly higher than other treatments. On the other hand, there was no significant difference in growth parameters between the treatments with and without zeolite. The results revealed that red tilapia stocked in the T1 of the lowest stocking density (5 fish) had the highest growth performance than the fish in other treatments. Compared to other treatments, T1 recorded the highest final length and weight, weight and length gain, Specific Growth Rate % (SGR) among the treatments. The findings will be useful for the practitioners to understand the best practice for stocking density in zeolite supplemented closed system.

scholarly journals LAJU PERTUMBUHAN DAN EFISIENSI PAKAN IKAN NILA (Oreochromis niloticus) YANG DIPELIHARA DALAM KOLAM TERPAL YANG DIPUASAKAN SECARA PERIODIK

2018 ◽  
Vol 5 (1) ◽  
pp. 45-55
Author(s):  
Intan Permata Sari ◽  
Yulisman . ◽  
Muslim .
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Survival Rate ◽  
Specific Growth Rate ◽  
Feed Efficiency ◽  
Specific Growth ◽  
Specific Weight ◽  
Feed Consumption ◽  
Weight Growth ◽  
Randomized Design

ABSTRACT    Starved was one effort that can reduce the feed consumption and feed residues without decreasing growth of cultured fish. The purpose of this research was to determine the effect of starved periodically to the specific growth rate and feed efficiency of tilapia reared in the pond. The research had been conducted in Laboratorium Budidaya Perairan, Faculty of Agriculture, Sriwijaya Unversity on April – Juni 2016. This research method used Completely Randomized Design with four treatments and three replications that was every day feed without starvation (P0), one day feed one day starvation (P1), two days feed one day starvation (P2) and three days feed one day starvation (P3). Parameters of this research are specific growth rate, feed efficiency, survival rate and water quality (temperature, pH, DO, ammonia). The result showed that starved periodically significantly effect to the growth rate and feed efficiency of cultured tilapia in the pond. Treatment P1 (one day feed one day starvation) gave highest specific weight growth rate and specific length growth rate which were 2.32%.day-1 and 1.27%.day-1 then feed efficiency was 84.46%. The highest survival rate occurred in treatment P1 (one day feed one day starvation) 82%. Water quality of this research were temperature 27.0-31.5 oC,  pH 6.8-7.9, dissolved  oxygen 4.53-7.23 mg.L-1, and ammonia 0.01-0.30 mg.L-1. Keywords : Feed Efficiency, Specific growth rate, Starved, , Tilapia.

scholarly journals Efek nisbah kelamin jantan dan betina yang berbeda terhadap kinerja pertumbuhan yuwana ikan nila biru, Oreochromis aureus (Steindachner1864) [Effect of different male and female sex ratio on growth of juvenile blue tilapia Oreochromis aureus (Steindachner 1864)]

2017 ◽  
Vol 17 (1) ◽  
pp. 55
Author(s):  
Adam Robisalmi ◽  
Priadi Setyawan ◽  
Bambang Gunadi
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Specific Growth Rate ◽  
Growth Performance ◽  
Specific Growth ◽  
Feed Conversion ◽  
Oreochromis Aureus ◽  
Male And Female ◽  
C 50 ◽  
Blue Tilapia

Blue tilapia is one strain of tilapia potential to be developed. This fish has highly tolerant of low temperatures and salinity. In the development of aquaculture of tilapia, male monosex give higher production than mix male-female culture. This activity aims to determine the growth performance of juvenile blue tilapia reared by different ratio of male and female. The study was conducted for 90 days at the Research Institute for Fish Breeding Sukamandi. The fish used are blue tilapia stocking with the initial weight 32.32±2.34 g. Rearing juvenile of blue tilapia using net 2x1 m2 with stocking density 30 fish per net. The treatment is a difference in the ratio of male and female i.e A (100% male), B (75% male: 25% female), C (50% male: 50% female), D (25% male: 75% female), and E (100% female). The fish were fed with formulated food (32% protein) twice daily as much as 5 % of the biomass. The parameters observed were absolute growth, specific growth rate, daily growth rate, feed conversion ratio and survival rate. The results showed A, blue tilapia with 100% male had highest growth performance, longest and the highest weight i.e 8.33±0.67cm and 136.50± 11.92g; with highest specific growth rate, food conversion and survival rate, i,e 1.76±0.05 weight day-1, 1.52±0,20 and 96.66%. While the lowest growth and feed conversion was D, fish mix culture of blue tilapia (25% male: 75% female). Blue tilapia male 100% monosex is recommended to use in aquaculture because it showed the highest growth with lower feed conversion. AbstrakIkan nila biru (Oreochromis aureus) merupakan satu jenis ikan yang potensial untuk dikembangkan. Ikan ini memiliki keunggulan toleran terhadap suhu rendah dan salinitas tinggi. Dalam perkembangan budi daya, populasi ikan nila tung-gal kelamin jantan diyakini memberikan hasil produksi lebih baik dibandingkan kelamin campuran. Kegiatan ini bertu-juan untuk mengevaluasi performa pertumbuhan yuwana ikan nila biru yang dipelihara dengan nisbah kelamin jantan dan betina berbeda. Penelitian dilakukan di Balai Penelitian Pemuliaan Ikan Sukamandi selama 90 hari. Ikan yang di-gunakan adalah ikan nila biru dengan bobot awal tebar 32,32±2,34 g. Yuwana nila biru dipelihara di hapa berukuran 2x1 m2 dengan padat tebar 30 ekor per hapa. Perlakuan adalah perbedaan nisbah kelamin jantan dan betina yaitu A (100% jantan), B (75% jantan : 25% betina), C (50% jantan : 50% betina), D (25% jantan : 75% betina) dan E (100% betina). Selama pemeliharaan ikan diberi pakan berkadar protein 32% dengan frekuensi dua kali sehari sebanyak 5% dari bobot ikan. Parameter yang diamati meliputi pertumbuhan mutlak, laju pertumbuhan spesifik, laju pertumbuhan harian, nisbah konversi pakan, dan sintasan. Hasil penelitian menunjukkan populasi ikan nila biru yang dipelihara 100% jantan mempunyai performa pertumbuhan panjang dan bobot tertinggi sebesar 8,33±0,67cm dan 136,50±11,92 g dengan laju pertumbuhan spesifik yang tinggi sebesar 1,76±0,05% bobot hari-1, konversi pakan 1,52±0,20 dan sintasan 96,66%, sedangkan pertumbuhan terendah pada populasi ikan nila biru campuran (25% jantan : 75% betina). Pengguna-an ikan nila biru monoseks jantan 100% dianjurkan untuk digunakan dalam kegiatan budi daya karena mempunyai pertumbuhan tertinggi dengan konversi pakan yang rendah.

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