scholarly journals COMPORTAMIENTO PRODUCTIVO DE ALEVINOS DE ÓSCAR (Astronotus ocella-tus) EN BIOFLOC CON DIFERENTES RELACIONES CARBONO:NITRÓGENO

2018 ◽  
Vol 5 (1) ◽  
pp. 45-58
Author(s):  
Edisson A. Castillo-Pastuzan ◽  
Marco A. Imués-Figueroa ◽  
Luis F Collazos-Lasso
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Carbon Source ◽  
Weight Ratio ◽  
Cost Benefit ◽  
Experimental Unit ◽  
Nitrogen Compounds ◽  
Feed Conversion ◽  
Astronotus Ocellatus ◽  
Simple Conversion

Biofloc (TBF) es una nueva técnica utilizada en acuicultura, capaz de reducir los compuestos nitrogenados, remover los desechos producidos por los peces y servir como fuente de alimento, a partir de la adición de una fuente de carbono, manteniendo el control de la relación C:N en el agua. Por lo anterior, se propuso explorar el potencial del biofloc para el cultivo de alevinos de pez óscar (Astronotus ocellatus), utilizando tres tratamientos con tres replicas y 20 alevinos por unidad experimental, sometidos a diferentes relaciones C:N (15:1; 20:1 y 25:1), cada unidad en un acuario de 50 L con suficiente aireación. El peso inicial de los alevinos fue de 1,67±0,37g y talla de 4,50±0,36 cm, recibiendo un alimento comercial con 35% de proteína. Como fuente de carbono se utilizó melaza, adicionada semanalmente para mantener las relaciones C:N teóricas. Se evaluó las variables fisicoquímicas del agua (temperatura, oxigeno, pH, amonio, nitrito, nitrato, alcalinidad y sólidos sedimentables) y productivos de la especie (peso y talla), con cuyos datos se estimó incremento de peso y talla, tasa de crecimiento simple, conversión alimenticia y relación beneficio costo. Los valores de calidad del agua fueron similares en todos los tratamientos. Los resultados demuestran que el BFT puede reducir eficientemente los compuestos nitrogenados en todas las relaciones probadas, siendo las menores concentraciones en la relación 25:1. En cuanto a variables productivas, se encontró diferencias significativas (p<0,05), sugiriendo que la relación 20:1 provee la mejor supervivencia (98,3%), conversión alimenticia (2,42±4,05), crecimiento en peso (9,78±4,80) y tasa de crecimiento simple (1,22±0,79 quincenal), en comparación con las otras relaciones probadas. De acuerdo con esto, la implementación de nuevas tecnologías amigables con el medio ambiente como el BFT es efectiva y altamente potencial para el control de la calidad del agua en especies con gran potencial acuícola, como el pez óscar. Palabras clave: calidad del agua, especies nativas, nitrificación, pez óscar, acuicultura, compuestos nitrogenados PRODUCTIVE COMPORTMENT FROM ALEVINOS OF OSCAR (Astronotus ocellatus) IN BIOFLOC WITH DIFFERENT RELATIONS CARBON:NITROGENABSTRACT Biofloc (BFT) is a new technique used in aquaculture, able to reduce the nitrogen compounds, remove the wastes produced by the fish and serve as a food source, from the addition of a carbon source, maintaining control of the ratio C: N in the water. Therefore, it was proposed to explore the biofloc potential for ostrich fish (Astronotus ocellatus), using three treatments with three replicates and 20 fingerlings per experimental unit, under different C: N ratios (15:1; 20:1 and 25:1), each unit in a 50 L aquarium with sufficient aeration. The initial weight of the fingerlings was 1.67 ± 0.37 g and a size of 4.50 ± 0.36 cm, receiving a commercial feed with 35% protein. Molasses, added weekly to maintain the theoretical C: N ratios, were used as the carbon source. The physicochemical variables of the water (temperature, oxygen, pH, ammonium, nitrite, nitrate, alkalinity and sedimented solids) and productive of the species (weight and height) were evaluated, with data estimating increase in weight and height, growth rate Simple, feed conversion and cost benefit ratio. The water quality values were similar in all treatments. The results show that BFT can efficiently reduce nitrogen compounds in all tested ratios, with the lowest concentrations being in the 25: 1 ratio. In terms of production variables, significant differences (p <0.05) were found, suggesting that the 20: 1 ratio provides the best survival (98.3%), feed conversion (2.42 ± 4.05), growth in Weight ratio (9.78 ± 4.80) and simple growth rate (1.22 ± 0.79 biweekly), compared to the other relationships tested. Accordingly, the implementation of new environmentally friendly technologies such as BFT is effective and highly potential for the control of water quality in species with great aquaculture potential, such as oscar fish.

scholarly journals ANALISIS KARAKTER REPRODUKSI DAN PERFORMA BENIH HIBRID IKAN NILA PANDU F6 DENGAN IKAN NILA NILASA (Oreochromis niloticus) Analysis of the Character Reproduction and Seed Hybrid Performance 0f Tilapia Fish F6 Pandu with Nilasa Tilapia (Oreochromis niloticus)

2017 ◽  
Vol 12 (1) ◽  
pp. 19
Author(s):  
Dio Patria Yustysi ◽  
Fajar Basuki ◽  
Titik Susilowati ◽  
Tristiana Yuniarti
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Survival Rate ◽  
Specific Growth Rate ◽  
Oreochromis Niloticus ◽  
Egg Size ◽  
Specific Growth ◽  
Fish Farming ◽  
Hatching Rate ◽  
Feed Conversion

ABSTRAK Penelitian ini bertujuan untuk mengetahui pengaruh dari hibridisasi ikan nila Pandu F6 dengan nila Nilasa terhadap karakter reproduksinya dan performa benih yang dihasilkan. Penelitian ini dilakukan dengan metode eksperimental menggunakan Rancangan Acak Lengkap (RAL) dengan 4 perlakuan dan 3 kali ulangan. Perlakuan dalam penelitian ini: perlakuan A (Pandu F6 ♀><Pandu F6 ♂), B (Nilasa ♀><Nilasa ♂), C (Pandu F6 ♀>< Nilasa ♂), dan D (Nilasa ♀><Pandu F6 ♂). Data yang diamati meliputi fekunditas, daya tetas telur, diameter dan bobot telur, panjang dan bobot larva TL, panjang dan bobot larva lepas kuning telur, kelulushidupan, laju pertumbuhan spesifik, konversi pakan dan kualitas air. Hasil penelitian menunjukan nilai terbaik pada fekunditas sebesar 1191,67 ± 239,45 butir/200 g, daya tetas telur sebesar 80,93 ± 3,90%, kelulushidupan sebesar 81,55 ± 7,54%, laju pertumbuhan spesifik sebesar 7,26 ± 0,25, konversi pakan 0,54 ± 0,02 didapatkan pada perlakuan C, akan tetapi untuk diameter dan bobot telur, panjang dan bobot larva Kuning Telur, dan panjang dan bobot larva lepas kuning telur tidak berbeda nyata. Hasil tersebut menunjukan bahwa hibridisasi (perlakuan C) memberikan pengaruh yang nyata (P < 0,05) terhadap fekunditas, daya tetas telur, kelulushidupan, laju pertumbuhan spesifik, dan konversi pakan tetapi tidak berpengaruh terhadap diameter dan bobot telur, panjang dan bobot larva, dan panjang dan bobot larva lepas kuning telur. Kata kunci: Hibridisasi, Ikan Nila, Karakter Reproduksi, Performa Benih  ABSTRACT This research aims to know the influence of hybridization tilapia fish Pandu F6 with nila Nilasa against the character of the reproduction and seed performance. This research was conducted with the experimental method using Random Design complete (RAL) with 4 treatments and three replicates. The treatments in this study: the treatment A (Pandu F6 F6 ♀ >< Pandu ♂), B (Nilasa ♀>< Nilasa ♂), C (Pandu F6 ♀>< Nilasa ♂), and D (Nilasa ♀ >< Pandu F6 ♂). The observed data covering fecundity, hatching rate, egg size, yolk sack larva length and weight, length and weight of the egg yolk off larvae, survival rate, specific growth rate, feed conversion rate, and water quality. The results showed the best value on the fecundity of 1191.67±239.45 eggs/200 g, Hatching rate 80.93 ± 3.90%, Survival rate of 81.55 ± 7.54%, specific growth rate of 7.26 ± 0.25, conversion fodder 0.54 ± 0.02 obtained at the treatment C, but for the diameter and weight of egg, larval length and weight TL, and the length and weight of the yolk egg off larvae for each treatment do not differ markedly. The results showed that hybridization (treatment C) gives a real influence (P < 0.05) of fecundity,hatching rate, survival rate but not with the egg size, larva weight and length, and the length and weight of larvae off yolk. Water quality on the spawning, hatching eggs and larvae found on the maintenance of a decent range for tilapia fish farming Keywords: hybridization, tilapia fish, character of the reproduction, seed performance 

scholarly journals Pemberian Enzim Lignosellulosa Dalam Pakan Buatan Terhadap Pertumbuhan Dan Tingkat Kelulushidupan Benih Ikan Gurami (Osphronemus gouramy Lac.) [The Granting Of An Enzyme Lignosellulosa In Feed Artificial On The Growth And The Survival Rate Seed Gourami (Osphronemus gouramy Lac.) ]

2019 ◽  
Vol 5 (2) ◽  
pp. 163
Author(s):  
Muhammad Yusuf Akbar, Agustono, Rahayu Kusdarwat
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Survival Rate ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Quality Data ◽  
Feed Conversion ◽  
Water Quality Data ◽  
The Difference ◽  
Range Test

Abstract Gurami having economic values of. Have abundance, namely able in waters with its oxygen relatively low. Belong to the species of carnivorous herbs herbivora. Unprofitableness is eat feed derived from herbs with content nutrition relatively low compared to animals, so it impact on its growth slow, easly diseases, easly stress, hard eat and SR low. The purpose of this research isto know the addition of enzyme lignosellulase in artificialfeedincreased growth and increased survival rate seed gourami. Method research used is experimental with delightful random complete (RAL) with five treatment and four deuterenomy. The treatment used were : control (A), enzyme 550ml (B), enzyme 600ml (C), enzyme 650ml (D), and enzyme 750ml(E). The main parameters measured were growth rate, and survival rate. The supporting parameters observedwas water quality. Data analysis used analysis of variance (ANOVA) to know the effect of the treatments.To know the difference among treatments used Duncan’s Multiple Range Test (DMRT). The result showed that the provision of enzymes give a real power (p<0.01) against growth rate daily and growth long absolute gourami (Osphronemus gouramy) To survival rate and feed conversion ratio gourami give impact which is not dissimilar real. Growth best on treatment E (0.0214), then successive followed by treatment D (0.0174), C (0.015), B (0.0142) and A (0.0128). Conversion ratio feed on all treatment e 10,415, that is, e then successive followed by treatment d (12,915), c (14,3975), b (15,6375) and a (17,5325). Survival rate obtained 100%. Water quality media maintenance gourami is temperature 26ºC - 29ºC, pH 7 – 8, oxygen dissolved 3.5 – 5 mg/l and ammonia 0.004 – 0.005 mg/l.

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 Penentuan bobot kayu apu Pistia stratiotes L. sebagai fitoremediator dalam pendederan ikan gurami Lac. ukuran 3 cm

2016 ◽  
Vol 15 (2) ◽  
pp. 180
Author(s):  
Kukuh Nirmala ◽  
Sulistia Wardani ◽  
Yuni Puji Hastuti ◽  
Wildan Nurusallam
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Feed Efficiency ◽  
Specific Growth ◽  
Weight Ratio ◽  
Stocking Density ◽  
Pistia Stratiotes ◽  
Water Lettuce ◽  
Quality Technology ◽  
Absolute Length

<p class="BasicParagraph"><strong>ABSTRACT</strong></p><p class="BasicParagraph"> </p><p class="BasicParagraph">The use of high stocking density in nursery causes a decrease of  water quality. Technology that can be used to solvethe low water quality in nursery of giant goramy was phytoremediation using <em>Pistia stratiotes</em> L. Purpose of this research was to determine the best weight ratio between <em>P. stratiotes</em> L. and 33 L water in nursery giant goramy size 3 cm. Giant goramy size 3 cm was maintained in an aquarium and was treated with different weight of <em>P. stratiotes</em> L. consisted of 45 g, 90 g, 135 g, and controls <em>P. stratiotes</em> L. 0 g. Cleaning and water change was done once a week. This research showed that the treatment of <em>P. startiotes</em> L. 45g/33 L water gave the best result in survival rate, absolute length of the growth, specific growth rate, feed efficiency and economically profitable.</p><p class="BasicParagraph"> </p><p class="BasicParagraph">Keywords: phytoremediation, water lettuce, <em>Osphronemus goramy</em> L., nursery</p><p class="BasicParagraph"><strong> </strong></p><p class="BasicParagraph"><strong> </strong></p><p class="BasicParagraph"><strong>ABSTRAK</strong></p><p class="BasicParagraph"><strong> </strong></p><p class="BasicParagraph">Penggunaan padat tebar tinggi pada pendederan ikan gurami mengakibatkan kualitas air menjadi buruk. Salah satu teknologi yang bisa digunakan untuk mengatasi kualitas air yang buruk pada pendederan ikan gurami adalah fitoremediasi menggunakan tanaman kayu apu. Tujuan penelitian ini adalah menentukan bobot kayu apu dengan volume air 33 L pada pendederan ikan gurami ukuran 3 cm. Ikan gurami ukuran 3 cm dipelihara di dalam akuarium dan diberi perlakuan bobot tanaman kayu apu berbeda yaitu 45 g, 90 g, dan 135 g, serta kontrol  (kayu apu 0 g). Penyiponan dan pergantian air dilakukan setiap satu minggu sekali. Hasil penelitian menunjukkan bahwa perlakuan kayu apu 45 g/33 L air menunjukkan hasil tingkat kelangsungan hidup, pertumbuhan panjang mutlak, laju pertumbuhan bobot harian, efisiensi pakan yang paling baik, serta lebih menguntungkan dibandingkan dengan perlakuan kontrol (kayu apu 0 g).</p><p class="BasicParagraph"> </p><p>Kata kunci: fitoremediasi, kayu apu, <em>Oshpronemus goramy</em> L., pendederan</p><p> </p>

scholarly journals PERFORMA PERTUMBUHAN CALON INDUK IKAN GABUS Channa striata YANG DIBERI PAKAN BENIH IKAN NILA Oreochromis sp.

2021 ◽  
Vol 11 (1) ◽  
pp. 1-8
Author(s):  
M. Muslim ◽  
Andri Iskandar ◽  
Andri Hendriana ◽  
L. Lutfi
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Feeding Rate ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Average Weight ◽  
Feeding Rates ◽  
Feed Conversion ◽  
Parent Stock ◽  
Channa Striata

ABSTRACTThe purpose of this study was to determine the growth of parent stock snakehead fish Channa striata in a pond fed with tilapia Oreochromis sp. seeds using different feeding rates. Studies were carried out using three different treatments feeding rate (FR), which is 2%, 3%, and 4%. The parameters observed included growth, feed conversion ratio, and water quality. The results showed that the growth of the average weight of fish FR 4% per day (growth rate 86,01 g) had higher than other treatments. The value of feed conversion is 2,5 while the fish is given FR 2%. Parameters of water quality, i.e. pH, temperature, alkalinity, and ammonia still in the range of tolerance.

scholarly journals PENGARUH KULIT BUAH NAGA (Hylocereus polyhizus) DALAM PAKAN TERHADAP KINERJA PRODUKSI IKAN KOI (Cyprinus carpio)

2020 ◽  
Vol 7 (2) ◽  
pp. 107
Author(s):  
Teuku Reza Efianda ◽  
Yusnita Yusnita ◽  
Nurul Najmi ◽  
Kiki Rishki Ananda ◽  
Fazril Saputra
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Specific Growth Rate ◽  
Cyprinus Carpio ◽  
Quantitative Research ◽  
Specific Growth ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Feed Conversion ◽  
Randomized Design

This study aims to determine the rate of growth, survival, and feed conversion ratio in feed of Cyprinus carpio with Hylocereus polyhizus. This study used a Completely Randomized Design (CRD) consisting of 4 treatments and 4 replications. The treatments in this study include 0% (P0), 5% (P1), 10% (P2), and 15% (P3). The method of feeding uses 5% feeding rate with a frequency of three times a day (morning, afternoon, evening). The research parameters observed included survival, specific growth rate, feed conversion ratio and water quality. Quantitative research results showed the best survival at P3 of 92.5%, the best specific growth rate at P3 treatment was 0.04 g / day, the best feed conversion ratio at P3 was 1.06, while the results of qualitative research on water quality showed temperature, pH, Dissolved Oxygen is in optimal condition according to the water quality of koi fish. The conclusion of the 15% treatment study (P3) is the best dose of Hylocereus polyhizus substitution of Cyprinus carpio with increased survival and specific growth rate, and decreases the rate of feed conversion ratio.  Keywords: Cyprinus carpio, Growth, Hylocereus polyhizus, Production, Survival Rate.

scholarly journals Crescimento inicial de Erythrina velutina em diferentes substratos com adubação orgânica

2016 ◽  
Vol 11 (5) ◽  
pp. 30
Author(s):  
Mychelle Karla Teixeira de Oliveira ◽  
Jeferson Luiz Dallabona Dombroski ◽  
Rita De Cássia Araújo de Medeiros ◽  
Valmor Elias Tomczak ◽  
Raul Martins de Farias
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Folk Medicine ◽  
Weight Ratio ◽  
Dry Weight ◽  
Cattle Manure ◽  
Experimental Unit ◽  
Initial Growth ◽  
Organic Fertilization ◽  
Basal Diameter

<p><em>Erythrina velutina </em>é uma espécie arbórea nativa do Nordeste Brasileiro, empregada no paisagismo, na regeneração de áreas degradadas e na medicina popular. Objetivou-se com este trabalho avaliar o crescimento de mudas de <em>Erythrina velutina</em> produzidas em substratos com adubação orgânica. O experimento foi conduzido em delineamento inteiramente casualizado, com parcelas subdivididas no tempo, com cinco repetições, sendo a unidade experimental representada por 20 mudas. O primeiro fator foi constituído por dois substratos (solo de Mossoró-RN + esterco bovino (4:1) e solo de Angicos-RN + esterco bovino (4:1)), e o segundo fator constituído de dois acessos. Ao longo do experimento foram realizadas coletas, para avaliação de crescimento (28, 56, 84, 112 e 140 dias após a semeadura), com intervalos de 28 dias. Em cada coleta, as mudas foram analisadas quanto ao comprimento da parte aérea, ao número de folhas, ao diâmetro de coleto, à área foliar, à massa da matéria seca (caule, folhas, raiz, parte aérea, relação da parte aérea e raiz, e total). Pode-se concluir que os acessos de <em>Erythrina</em> <em>velutina</em> tiveram crescimento rápido e uniforme quando produzidas nos dois substratos (solo de Mossoró-RN + esterco bovino curtido (4:1) e solo de Angicos-RN + esterco bovino curtido (4:1)).</p><p align="center"><strong><em>Initial growth of Erythrina velutina in different substrates with organic fertilization </em></strong></p><p><strong>Abstract</strong><strong>: </strong><em>Erythrina velutina</em> is a tree native to the Brazilian northeast, used in landscaping, regeneration of degraded areas and in folk medicine. The objective of this work was to obtain information on <em>Erythrina velutina</em> of two accessions conducted in substrates with organic fertilization. The experiment was conducted in a completely randomized design with split plot with five replications and the experimental unit was represented by 20 seedlings. The first factor was composed of two substrates (sand + cattle manure (4:1) and soil + cattle manure (4:1)) and the second factor consisted of two accessions. Throughout the experiment were five collections of plants for evaluation of growth (28, 56, 84, 112 and 140 days after sowing), with intervals of 28 days. At each sampling date, the following characteristics were analyzed: shoot length, leaf number, basal diameter, leaf area, dry matter (aerial part, branches, leaves, roots, shoots, shoot to root dry weight ratio), leaf area ratio, leaf weight ratio, specific leaf area, absolute growth rate, relative growth rate and net assimilation rate. It can be concluded that accessions of <em>Erythrina velutina</em> grew fast and even when produced in the two substrates consisting of sand and / or soil with added manure.</p><br /><strong></strong>

scholarly journals Effects of Feeding Frequency on Growth Performance and Production of Labeo rohita (Hamilton, 1822) Reared in Cage

2021 ◽  
pp. 23-33
Author(s):  
Md. Al-Amin Sarker ◽  
Saleha Jasmine ◽  
Mst. Sultanan Okela
Keyword(s):  
Water Quality ◽  
Body Weight ◽  
Growth Performance ◽  
Labeo Rohita ◽  
Cost Benefit ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Average Weight ◽  
Feeding Schedule ◽  
Feed Conversion

Optimum feeding schedule is one of the main things for the proper growth of fish and other animals. A study was conducted to optimize the effects of different feeding frequencies on growth performance and production of Rui (Labeo rohita) under pond cage culture system in Rajshahi, Bangladesh. Labeo rohita with an average weight of 302.23±4.07g (mean ± SD) were randomly stocked in 9 cages at 30 fish/cage in all the treatment. Fish were fed (4% of body weight) a commercial floating feed with three different feeding schedules: feeding of fish thrice daily in T1treatment; twice in T2 treatment and once in T3 treatment. Water quality parameters were measured during the study period. The physico-chemical parameters of pond water were within suitable ranges for fish culture in cages. The obtained values of the water quality parameters were temperature 28.26 to 28.46°C, pH 6.91 to 6.94, DO 5.04 to 5.33 mg/l, CO2 2.95 to 3.02 mg/L. The mean final weight gain was significantly highest in T1 (345.05 g) a followed by T2 (324.66 g) and T3 (257.82 g). The Specific growth rate (SGR) value were significantly higher in T1 treatment (0.91% bwd-1; Body weight per day) than T2 (0.87% bwd-1) and T3 treatment (0.73% bwd-1). The feed conversion ratio (FCR) value was significantly lower in T1 fish group (2.72) than other two T2 (2.84) and T3 (3.44) treatments. The fish productions were 18.13, 17.55 and 15.67 kg/cage/cycle in T1, T2 and T3 respectively. The highest net profit was found (Bangladeshi Taka, BDT 1445.38) in T1 compared to T2 (BDT 1329.24) and T3 treatment (BDT 937.99). The cost benefit ratio (CBR) was significantly higher in T1 (0.57) than T2 (0.53) and T3 (0.37). The feeding schedule three times in a day was most suitable than other two schedules.

scholarly journals Penggunaan dedak yang difermentasi dengan bahan yang berbeda sebagai pakan tambahan ikan patin (Pangasius pangasius)

2014 ◽  
Vol 1 (1) ◽  
pp. 39
Author(s):  
Ira Diana ◽  
Erniati Erniati
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Statistical Analysis ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Feed Conversion ◽  
Feed Supplement ◽  
Additional Food ◽  
Optimum Range ◽  
Average Value

Tujuan penelitian ini adalah untuk mengetahui pengaruh penggunaan berbagai bahan untuk fermentasi dedak (ampas tahu, ampas kelapa dan ragi) terhadap laju pertumbuhan dan kelangsungan hidup ikan patin (Pangasius pangasius). Penelitian ini dilaksanakan pada tanggal 10 Mei – 09 Juni 2014  yang berlokasi di Laboratorium Hatchery dan Teknologi Budidaya Perairan Program Studi Budidaya Perairan. Hasil penelitian menunjukkan bahwa penggunaan dedak yang difermentasi dengan bahan yang berbeda (ampas tahu, ampas kelapa dan ragi) sebagai pakan tambahan berpengaruh terhadap pertumbuhan ikan patin. Pertambahan panjang dan bobot tertinggi pada perlakuan B yaitu pemberian pakan pelet dan pakan dedak halus yang difermentasikan dengan ampas tahu dengan nilai rata-rata 0,525 cm dan 0,657 gram. Kelangsungan hidup 100% dan konversi pakan yang terbaik terdapat pada perlakuan B yaitu sebesar 4,333 gram. Parameter kualitas air berada pada kisaran yang baik untuk pertumbuhan benih ikan patin. Analisis statistik dengan uji F di peroleh bahwa penggunaan dedak yang difermentasikan dengan bahan yang berbeda sebagai pakan tambahan tidak berbeda nyata terhadap kelangsungan hidup benih ikan patin (Pangasius pangasius) dengan nilai Fhitung ( 0 ) <  Ftabel (7,59) dan berbeda sangat nyata terhadap pertambahan panjang tubuh benih ikan patin (Pangasius pangasius) dengan nilai Fhitung (147) > Ftabel (7,59) serta berbeda sangat nyata terhadap pertambahan bobot dengan nilai Fhitung (56,500) > Ftabel (7,59)  Selanjutnya berbeda sangat nyata terhadap konversi pakan dengan nilai Fhitung (15,081)  > Ftabel (5,99).The aims of this study is to determine the effect of the application of various materials for fermented bran (pulp, coconut pulp and yeast) on the growth rate and survival of catfish (Pangasius pangasius). This study was conducted on 10 May, 10 to June, 9 2014 at the Laboratory of Hatchery and Aquaculture Technology, Malikussaleh University. The results showed that the application of the fermented bran with different materials (pulp, coconut pulp and yeast) as an additional food was affected the growth of catfish. The highest length and weight was found in the treatment numbers B that was applying  pellets and feed fine bran fermented with the pulp out with the average value  0.525 cm and 0.657 grams. Meanwhile, 100% survival and the best feed conversion contained found in the treatment numbers B which was equal to 4.333 grams. Water quality parameters were within the optimum range for the catfish growth. Statistical analysis by F test  resulted  that the application  of fermented bran with different materials as an feed supplement was not significantly different to the survival of the catfish (Pangasius pangasius) fingerling with the value of F (0) <F table (7.59). The Highly significant to the length of the catfish (Pangasius pangasius) fingerling also found with the value of F (147)> F (7,59) as well as the highly significant to the weight with the value of F (56,500)> F (7,59). Furthermore, highly significant on feed conversion between treatments with the value of F (15,081)> F (5.99).

scholarly journals Effects of two hydroponic components on water quality, snakehead fish growth and leaf mustard production in aquaponic system

2021 ◽  
Vol 20 (02) ◽  
pp. 27-35
Author(s):  
Tu P. C. Nguyen
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Farming System ◽  
Quality Parameters ◽  
Fish Growth ◽  
Feed Conversion ◽  
Recirculating Aquaculture ◽  
The Media ◽  
Nitrite Nitrate ◽  
Feed Conversion Rate

Aquaponic model is a farming system that integrates a recirculating aquaculture system with hydroponics. There are three hydroponic methods commonly employed in the aquaponics systems: the media bed (MB), the nutrient film technique (NFT) and the deep-water culture - floating rafts (DWC). This study was conducted to evaluate effects of two hydroponic systems (DWC and MB) on water quality parameters, growth rate of fish and development of vegetable in the aquaponic model of snakehead fish (Channa striata) and leaf mustard (Brassica juncea). Snakehead fish were stocked with a density of 40 fish/75 liters of water and were cultured for 167 days. The results showed that daily temperature, pH and dissolved oxygen parameters in the two systems were almost the same and relatively stable while the electrical conductivity in the MB was much higher than that in the DWC. Similarly, the levels of the parameters weekly monitored (ammonia, nitrite, nitrate, total phosphorus, and alkalinity) in the MB were higher than those in the DWC. At the end of the experiment, final weight, weight gain, specific growth rate and survival rate of fish in the MB treatment were higher than those in the DWC treatment, but the feed conversion rate of fish in the MB was lower than that in the DWC. On the contrary, vegetable yields in the DWC were significantly higher than those in the MB. In general, the DWC aquaponics work better than the MB system

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