Hormonal sex reversal technique of Oreochromis niloticus larvae in a tank in the Urban Commune of Kankan, Republic of Guinea

Hormonal sex - reversal is widely recognized as having significant advantage over both manual sexing and hybridization. The present study carried out in the aquaculture center of Kankan aimed at producing monosex male fry of Oreochromis niloticus in order to increase the yield of this species. During this study, 95 Oreochromis niloticus broodstock including 21 males and 74 females were paired (spawned) in a spawning tank of 135 m2 surface for 15 days. The respective mean weights of the spawners were 448.6 ±157.7 g for males and 406.7±115.9 g for females. Hormonal treatment was performed on 900 larvae with an average initial weight of 0.028 g from the 10th post fertilization to the 38th day in a tank of one (1) m3. The larvae were fed with 1 kg of imported "Raanan Premium Fish" powdered feed titrated with 40% protein, mixed in a hormonal solution containing 17-α-methyltestosterone and 90% ethanol with respective doses of 100 mg and 500 ml. At the end of hormonal treatment, 578 fry with a final average weight of 4.5 g were conducted in a pre-pregnancy tank with a surface area of 50 m2 for 30 days and yielded at the end of pre-pregnancy 501 fry with a final average weight of 13 g, a daily growth rate of 0.22 g, a specific growth rate of 1.7%, a survival rate of 64% and a mortality rate of 36%. After sex identification (sexing), the rates of hormonal treatment were 83.33% and 16.66% for males and females, respectively. In conclusion, the popularization of the results of this study could be considered as an alternative for a production of monosex male population in Oreochromis niloticus that will feed the networks of local producers to improve the production of the species throughout the country. Keywords: Oreochromis niloticus, hormone, sex, larvae and tank.

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APLIKASI TEPUNG TESTIS SAPI YANG MENGANDUNG rGH DALAM PAKAN BUATAN TERHADAP RASIO JENIS KELAMIN, PERTUMBUHAN DAN KELULUSHIDUPAN IKAN NILA (Oreochromis niloticus)

Pena Akuatika Jurnal Ilmiah Perikanan dan Kelautan ◽

10.31941/penaakuatika.v17i2.656 ◽

2018 ◽

Vol 17 (2) ◽

Author(s):

Rachmat Nurul Huda ◽

Titik Sulistiowati ◽

Tristiana Yuniarti

Keyword(s):

Growth Rate ◽

Survival Rate ◽

Sex Ratio ◽

Specific Growth Rate ◽

Oreochromis Niloticus ◽

Specific Growth ◽

Sex Reversal ◽

Average Weight ◽

Fish Feed ◽

Male Sex

ABSTRAKBudidaya ikan nila (Oreochromis niloticus) terus dikembangkan hingga saat ini. Berbagai teknologi dalam bidang perikanan telah diterapkan, salah satunya yaitu sex reversal dalam hal ini jantanisasi. Ikan nila jantan lebih cepat pertumbuhannya dari pada ikan nila betina sehingga dapat meningkatkan hasil produksi. Tujuan penelitian ini yaitu untuk mengetahui pengaruh pemberian tepung testis sapi dan dosis terbaik tepung testis sapi dalam pakan yang mengandung rGH terhadap rasio jenis kelamin, pertumbuhan dan kelulushidupan ikan nila. Bahan uji yang digunakan adalah larva ikan nila dengan stadia larva yang berumur 7 hari setelah lepas kuning telur dan memiliki bobot rata-rata 0,07 gram/ekor. Penelitian ini menggunakan metode eksperimental dengan Rancangan Acak Lengkap 4 perlakuan dan 3 kali ulangan. Perlakuan dalam penelitian ini yaitu dengan menambahkan tepung testis sapi dengan dosis pada perlakuan A (0%/kg pakan), perlakuan B (3%/kg pakan), perlakuan C (6%/kg pakan) dan, perlakuan D (9%/kg pakan). Pakan pada setiap perlakuan dalam penelitian ini telah ditambahkan rGH dengan dosis 2 mg/kg pakan. Data yang diamati meliputi rasio jenis kelamin, laju pertumbuhan spesifik (SGR), dan tingkat kelulushidupan (SR) ikan nila. Hasil penelitian menunjukan bahwa perlakuan C (6% tepung testis sapi/kg pakan) memberikan hasil terbaik dimana nilai rasio jenis kelamin jantan sebesar 74,44±5,09% dan laju pertumbuhan spesifik sebesar 9,48±0,10% bobot/hari. Kesimpulan yang diperoleh dalam penelitian ini yaitu adanya pengaruh nyata terhadap rasio jenis kelamin dan tingkat pertumbuhan spesifik, namun tidak berpengaruh nyata terhadap tingkat kelulushidupan ikan nila dengan pemberian dosis tepung testis sapi terbaik adalah 6% tepung testis sapi/kg pakan.Kata kunci: Sex reversal; Tepung testis sapi; Pertumbuhan, rGH; NilaABSTRACTTilapia fish (Oreochromis niloticus)cultivation still continue to be developed until nowdays. Many fisheries technology had been applied, and one of them is sex reversal which is masculinization. Male tilapia fish grows faster than the female one, so this can boost the produce of the fish. This research aims to know the effect of cow testicle flour addition and determine the best dosage on the fish feed which contains rGH towards the male-sex ratio, growth, and survival rate of tilapia fish. The material which used in this research was tilapia fish (O. niloticus) which under the larvae phase 7 days post the separated egg yolk which have average weight of 0,07 grams/each. This research used experimental methods with Completely Randomized Design of 4 treatments and 3 times of repetitions. The treatments in this research was addition of different dosage of bull testicle which treatment A (0%/kg fish feed),treatment B (3%/kg fish feed), treatment C (6%/kg fish feed) and, treatment D (9%/kg fish feed). The fish feed in every treatment had been added with 2mg rGH/kg fish feed. Data observation during this research were male-sex ratio, specific growth rate (SGR), and survival rate (SR) of tilapia fish. Results of the research showed that treatment C (6%/kg fish feed) gave the best result as male-sex ratio by 74,44±5,09% and specific growth rate by 9,48±0,10% weight/day. Conclusion obtained from this research was: there was different result towards the male-sex ratio and specific growth rate, but there was no difference between the treatments towards the survival rate, the best bull testicle flour dosage was 6%/kg fish feed. Keywords: Sex reversal, Bull testicle flour, Growth, rGH, Tilapia

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Pengaruh Penambahan Pupuk Padat dan Cair terhadap Pertumbuhan, Jumlah Klorofil dan Kadar Protein Caulerpa racemosa, J.Agardh, 1873 (Ulvophyceae : Caulerpaceae)

Journal of Marine Research ◽

10.14710/jmr.v8i3.25269 ◽

2019 ◽

Vol 8 (3) ◽

pp. 269-276

Author(s):

Vicky Dimas Pradhika ◽

Suryono Suryono ◽

Sri Sedjati

Keyword(s):

Growth Rate ◽

Protein Content ◽

Chlorophyll Content ◽

Specific Growth ◽

Fertilizer Application ◽

Average Weight ◽

Caulerpa Racemosa ◽

Daily Growth ◽

Liquid Fertilizer ◽

Wet Weight

Caulerpa racemosa merupakan salah satu jenis rumput laut hijau yang dapat hidup di daerah pasang surutmaupun daerah yang tenang/bebas dari pasang surut. Setiap tahun permintaan C. racemosa di Jepara terus meningkat. Usaha pengembangan budidaya C. racemosa perlu dilakukan supaya penyediaan kebutuhan pasar tidak bergantung pada alam. Upaya peningkatan produksi budidaya dapat dilakukan dengan penambahan nutrien di tambak budidaya. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian pupuk padat dan cair terhadap pertumbuhan (berat basah, laju pertumbuhan harian) dan kandungan klorofil serta kadar protein rumput laut C. racemosa. Perlakuan yang pada penelitian ini adalahpenambahan pupuk :A (pupuk padat), B (pupuk cair), C (pupuk padat dan cair). Pencapaian berat rata rata rumput laut sebagai berikut: Kontrol= 39,5 ± 6,36 gram; A= 11,5 ± 2,12 gram; B= 18,5 ± 10,6 gram; D= 52,6± 14,19 gram. Laju pertumbuhan spesifik C. racemosa adalah: A= 1,2 ± 0,37%; B= -1,64 ± 0,51%; C= -0,53 ± 0,89%; C= 1,7 ± 0,63%. Kandungan klorofil a C. racemosa pada minggu 6 yaitu: Kontrol= 0,022mg/gram; A=0,015 mg/gram; B= 0,017 mg/gram; C= 0,080 mg/gram. Kandungan klorofil b C. racemosa pada minggu ke 6 yaitu: A= 0,016 mg/gram; B= 0,018 mg/gram; C= 0,013 mg/gram; D=0,026. Kandungan protein sebelum pemberian perlakuan adalah 0,60 % sedangkan setelah diberiperlakuan yaitu: Kontrol= 0,70% ± 0,06; A= 0,75% ± 0,11; B= 0,60% ± 0,10; C= 0,73% ± 0,08. Hasil penelitian ini menunjukkan bahwa pemberian pupuk padat dan cair berpengaruh nyata pada berat basah dan laju pertumbuhan spesifik C. racemosa (p < 0,01) sedangkan pemberian pupuk tidak bepengaruh nyata pada kandungan klorofil dan kadar protein (p > 0,05). Caulerpa racemosa is a type of green algae that can live’s in tidal areas and calm / free from tides. Every year the demand for C. racemosa in Jepara is continues to increase. Cultivation of C. racemosa need to be done so the market suply is not dependent only on nature. Efforts to increase culture production can be done by adding nutrients to aquaculture ponds. This study aims to determine the effect of solid and liquid fertilizer on growth (wet weight, daily growth rate), chlorophyll content and protein content of C. racemosa seaweed. Treathments of this study is fertilize additon: A (solid fertilizer), B (liquid fertilizer), C (solid and liquid fertilizer). The average weight of seaweed for 42 days is as follows: Control = 39.5 ± 6.36 grams; A = 11.5 ± 2.12 grams; B = 18.5 ± 10.6 grams; C = 52.6 ± 14.19 grams. Specific growth rates of C. racemosa produced for 42 days is: Control = 1.2 ± 0.37%; A = -1.64 ± 0.51%; B = -0.53 ± 0.89%; C = 1.7 ± 0.63%. C. racemosa’s Chlorophyll a content at week 6 is: Control = 0.022 mg/gram; A = 0.015 mg/gram; B = 0.017 mg/gram; C = 0.080 mg/gram. C. racemosa’s Chlorophyll b content at week 6 is: Control = 0.016 mg/gram; A = 0.018 mg/gram; B = 0.013 mg/gram; C = 0.026 mg/gram. Protein content before administration of treatment is 0.60% while after treatment, is: Control = 0.70% ± 0.06; A = 0.75% ± 0.11; B = 0.60% ± 0.10; C = 0.73% ± 0.08. The results of this study showed, the addition of solid and liquid fertilizers had a significant effect on wet weight and specific growth rate of C. racemosa (p <0.01) while fertilizer application did not significantly affect chlorophyll content and protein content (p> 0.05).

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Sex reversal of red tilapia using 17α-methyltestosterone-enriched feed and increased temperature

Jurnal Akuakultur Indonesia ◽

10.19027/jai.14.159-163 ◽

2015 ◽

Vol 14 (2) ◽

pp. 159 ◽

Cited By ~ 1

Author(s):

Safira Qisthina Ayuningtyas ◽

Muhammad Zairin Junior ◽

Dinar Tri Soelistyowati

Keyword(s):

Growth Rate ◽

Water Temperature ◽

Sex Reversal ◽

Feed Conversion ◽

Male Population ◽

Daily Growth ◽

Red Tilapia ◽

Commercial Feed ◽

Temperature Manipulation ◽

Male To Female

ABSTRACT The growth rate between male and female red tilapia Oreochromis sp. is different. Generally, the male red tilapia grows faster than the female. Furthermore, the maturation process of red tilapia is relatively fast which causes slower growth rate. One of solutions to this problem is by rearing all male population or mono-sex culture. The method used in this study was commercial feed enrichment with 17α-methyltestosterone at different dosages and water temperature manipulation. The purpose of this research was to examine the effects of commercial feed enrichment with different dosages of 17α-methyltestosterone and water temperature manipulation on success rate of sex reversal of red tilapia into all male population. This research consisted of different temperature treatments (with and without water heating) and 17α- methyltestosterone dosages (0, 10, 20 mg/kg of commercial feed). The best dosage of 17α-methyltestosterone was 20 mg/kg of commercial feed with male to female sex ratio of 86.31%, daily growth rate of 8.18%, and feed conversion ratio of 1.53. In this study, the best treatment to produce the male seeds was the 17α-methyltestosterone treatment. Keywords: 17α-methyltestosterone, sex reversal, red tilapia, temperature ABSTRAK Ikan nila merah Oreochromis sp. memiliki laju pertumbuhan yang berbeda antara ikan jantan dan betina. Umumnya ikan nila merah jantan lebih cepat tumbuh dibandingkan betinanya. Selain itu, ikan nila memiliki sifat cepat matang gonad dan mudah memijah sehingga akan menghambat pertumbuhan ikan. Salah satu cara untuk mengurangi masalah yang terjadi yakni dengan memelihara populasi ikan nila merah tunggal kelamin atau monoseks jantan. Metode yang dilakukan adalah pemberian hormon 17α-metiltestosteron dengan dosis berbeda melalui pakan buatan dan peningkatan suhu air. Penelitian ini bertujuan untuk mengetahui pengaruh dosis hormon 17α-metiltestosteron melalui pakan buatan dan peningkatan suhu air terhadap keberhasilan alih kelamin jantan pada ikan nila merah. Penelitian ini terdiri atas perlakuan suhu (dengan dan tanpa pemanasan air) dan dosis 17α-metiltestosteron (0, 10, 20 mg/kg pakan). Dosis hormon 17α-metiltestosteron terbaik yang didapatkan adalah 20 mg/kg pakan dengan nisbah kelamin jantan 86,31%, laju pertumbuhan harian 8,18%, dan rasio konversi pakan 1,53. Pada penelitian ini perlakuan terbaik untuk menghasilkan benih jantan adalah perlakuan dosis 17α-metiltestosteron. Kata kunci: 17α-metiltestosteron, alih kelamin, ikan nila merah, suhu

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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)

SAINTEK PERIKANAN Indonesian Journal of Fisheries Science and Technology ◽

10.14710/ijfst.12.1.19-23 ◽

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

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PENGARUH PEMBERIAN PROBIOTIK Bacillus spp. MELALUI PAKAN TERHADAP KELANGSUNGAN HIDUP DAN LAJU PERTUMBUHAN IKAN NILA (Oreochromis niloticus)

JURNAL BIOLOGI TROPIS ◽

10.29303/jbt.v16i1.212 ◽

2016 ◽

Vol 16 (1) ◽

Author(s):

Muhammad Masyarul Rusdani, Sadikin Amir Saptono Waspodo dan Zaenal Abidin

Keyword(s):

Growth Rate ◽

Survival Rate ◽

Oreochromis Niloticus ◽

Specific Growth ◽

Good Combination ◽

Randomized Design ◽

Bacillus Spp ◽

Completely Randomized Design ◽

Total Bacteria ◽

Different Doses

ABSTRAKPenelitian ini bertujuan untuk menguji kinerja bakteri probiotik Bacillus spp. dan prebiotik molase dengan dosis berbeda terhadap tingkat kelangsungan hidup dan kinerja pertumbuhan ikan nila (Oreochromis niloticus). Penelitian ini menggunakan motede eksperimen dengan rancangan acak lengkap (RAL) dan melibatkan 5 perlakuan, yaitu kontrol (K), Bacillus spp. 10 ml/kg pakan (A); Bacillus spp. 10 ml/Kg pakan + molase 10 v/v (B); Bacillus spp. 20 ml/Kg pakan (C); dan Bacillus spp. 20 ml/Kg pakan + molase 10 v/v(D). Hasil yang diperoleh menunjukkan variasi untuk total bakteri, yaitu dari 2,24x108 hingga 3,78x108 CFU/ml. Demikian juga dengan total Bacillus spp. dari 1,07x106 hingga 2,02x107 CFU/ml. Adapun untuk pengamatan tingkat kelangsungan hidup dan laju pertumbuhan tidak menunjukkan hasil yang signifikan. Meski demikian, perlakuan D memiliki hasil yang relatif lebih baik dengan nilai SR dan LPH berturut-turut 96,67% dan 1,01 %/hari. Kata kunci : probiotik Bacillus spp., prebiotik molase, total bakteri dan Bacillus spp., tingkat kelangsungan hidup, laju pertumbuhan harian ABSTRACTThis study was aimed to determine the good combination of probiotic bacillus spp. and prebiotic molasses with different doses to survival rate and growth performance of tilapia (Oreochromis niloticus). this study has used experimental design with completely randomized design (CRD) and five treatment, i.e. Control (K), without probiotic and prebiotic; Bacillus spp. 10 ml/kg feed (A); Bacillus spp. 10 ml/Kg feed + molasses 10 v/v (B); Bacillus spp. 20 ml/Kg feed (C); dan Bacillus spp. 20 ml/Kg feed + molasses 10 v/v (D). The results showed variation for total bacteria and total Bacillus spp. The average of total bacteria obtained in this study ranged from 2,24x108 to 3.78x108 CFU/ml. Likewise, the total Bacillus spp. were obtained from 1.07x106 to 2.02x107 CFU/ml. While for survival rate (SR) and the growth rate (DGR) did not showed significant results. However, treatment D has a relatively better then treatment else with SR and DGR respectively 96.67% and 1.01%.day-1. Keywords : probiotic Bacillus spp., prebiotic molasses, total bacteria and Bacillus spp., survival rate, specific growth rate.

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Comparative Evaluation of Broad Leaf Mustard (BLM) under Different Boron Concentrations in Outdoor Barrel Aquaponics at IAAS, Paklihawa

International Journal of Applied Sciences and Biotechnology ◽

10.3126/ijasbt.v7i3.25698 ◽

2019 ◽

Vol 7 (3) ◽

pp. 359-364

Author(s):

Sabita Gyawali ◽

Prashant Chaudhary ◽

Mohan Chaudhary ◽

Shailesh Gurung ◽

Rukmagat Pathak

Keyword(s):

Growth Rate ◽

Specific Growth ◽

Maximum Weight ◽

Daily Growth Rate ◽

Daily Growth ◽

Survival Percentage ◽

Leaf Yield ◽

Broad Leaf ◽

Two Factors ◽

Final Harvest

An experiment was conducted at IAAS Paklihawa, Bhairahawa from 6th October 2018 to 15th November 2018 (40 days). An open barrel Aquaponics system with a double factor RCBD type experimental design was used consisting of 3 replications and 2 factors under study. The two factors were boron concentrations (1%, 2% and 3%) and BLM varieties (Marfa Chauda Paat, Manakamana and chinese-430). Marfa Chauda Paat (47.35 gm.) was the highest yielding variety followed by Manakamana (36.42 gm.) and Chinese-430 (26.82 gm.). 1% Boron was found to be the most suitable concentration among the test concentrations for leaf yield. A maximum weight gain of the fish was observed in tank 3 (96.44%) followed by tank 1 (86.26%) and tank 2 (82.18%). An excellent survival percentage of fish was observed as 88.89%, 95.56% and 91.11% in tank 1, 2 and 3 respectively. Similarly, the Average Daily Growth Rate (ADGR) was recorded to be 126.5mg, 91.5mg and 128.25mg in tank 1, 2 and 3 respectively. The Specific Growth Rate (SGR %) was obtained to be 1.26, 1.38 and 1.46 for tank 1, 2 and 3 respectively. Furthermore, final harvest weight of fish was obtained to be 437g, 349.21g and 428.2g in tanks 1, 2 and 3 respectively. Int. J. Appl. Sci. Biotechnol. Vol 7(3): 359-364

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Effects of the Use of Plant-Based Food Additives on Growth, Body Composition, and Survival of Nile Tilapia (Oreochromis niloticus Linnaeus, 1758)

Aquatic Science and Technology ◽

10.5296/ast.v8i1.16694 ◽

2020 ◽

Vol 8 (1) ◽

pp. 71

Author(s):

Paul Mamadou Ndour ◽

Jean Fall ◽

Abdoulaye Loum ◽

Saloum Jatta ◽

Mariama Sagne ◽

...

Keyword(s):

Growth Rate ◽

Nile Tilapia ◽

Specific Growth ◽

Food Additives ◽

Ocimum Basilicum ◽

Conversion Ratio ◽

Feed Conversion Ratio ◽

Average Weight ◽

Feed Conversion ◽

Average Weight Gain

This study aimed to evaluate the impact of plant-based food additives on growth performance, body composition and survival of Nile tilapia. Four isonitrogenous (25% CP) and isolipidic (13% CL) experimental diets were prepared and designated as R1, R2, R3, and R4. R1 contains (3% Cymbopogon citratus), R2 contains (3% Ocimum basilicum), R3 contains (3% Mentha spicata) and R4 (control or 0% additive). 180 Nile tilapia fry with an initial average weight of 0.2g were distributed in 12 plastic tanks (50 L/tank) at the stocking density of 15 fish per tank in an isolated system. Fish were fed with experimental diets 3 times per day (8:00 am, 1:00 pm and 5 :00 pm) for 3 months. After 90 days of experiment, the results revealed that the final average weight ranged from 2.62g to 8.00g, the absolute average weight gain (AAWG) from 2.42 to 7.8g, the feed conversion ratio (FCR) from 1.31 to 2.67 and specific growth rate (SGR) from 3.06 to 4.36%/d. The survival rate (SR) varied between 64 and 100%. Of the parameters studied such as the absolute average weight gain (AAWG), the specific growth rate (SGR), the feed conversion ratio (FCR), and the survival rate, the best were obtained by the group of fish fed with the R2 diet containing 3% Ocimum basilicum. The results of the analysis of the flesh showed that the addition of 3% O. basilicum does not modify the contents of dry matter, crude protein, and ash but slightly increased the fat content. Based on the results, the inclusion of natural plant-based food additive (3% Ocimum basilicum) in the diet of Nile tilapia improved the parameters of growth, feed efficiency, and survival.

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The Effect of Ploidy on Growth and Feeding Pattern of Diploid and Triploid Turbot Scophthalmus maximus Under Communal Rearing Condition

Turkish Journal of Fisheries and Aquatic Sciences ◽

10.4194/1303-2712-v21_6_02 ◽

2021 ◽

Vol 21 (06) ◽

pp. 275-281

Author(s):

Ilhan Aydin

Keyword(s):

Growth Rate ◽

Specific Growth Rate ◽

Specific Growth ◽

Scophthalmus Maximus ◽

Average Weight ◽

Feed Conversion ◽

Farmed Fish ◽

Conversion Rates ◽

Significant Difference ◽

Turbot Scophthalmus Maximus

Triploidy induction is a useful tool to produce sterile fish that prevents interbreeding of farmed fish with wild counterparts. In this study, growth performance and feed conversion rates of 12-months old diploid and triploid turbot that reared both communally and separately for 16 months at constant water temperature determined. At the end of the experiment, diploid, triploid, and communally reared groups reached an average weight of 672.4±21.0 g, 659.2±25.3 g and 660.5±12.0 g, respectively. Any significant differences were not observed in the weight of separately reared diploid and triploid turbot groups. In contrast, triploid fish in the communal group were significantly heavier than diploids at the end of the rearing period. The feed conversion rate of the ploidy group did not show any significant difference between groups. The highest mean specific growth rate was observed in the triploids in communal groups, whereas the diploids in communal groups had the lowest mean specific growth rate. The weight and length gain rates of the groups were similar. Diploid turbot growth appeared to be negatively affected by communal ploidy rearing. The results of the present study indicate that triploid turbot farm escapees may be advantageous in terms of growth in nature.

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PENGARUH PENAMBAHAN SERBUK DAUN KAYU MANIS (Cinnamomum burmanii) PADA PAKAN TERHADAP KELANGSUNGAN HIDUP DAN PERTUMBUHAN IKAN NILA (Oreochromis niloticus)

Jurnal Perikanan Pantura (JPP) ◽

10.30587/jpp.v1i1.292 ◽

2018 ◽

Vol 1 (1) ◽

pp. 32

Author(s):

Moh. Fikri Ubaidillah ◽

Farikhah Farikhah ◽

Firma Fika Rahmawati

Keyword(s):

Growth Rate ◽

Oreochromis Niloticus ◽

Daily Growth Rate ◽

Daily Growth ◽

Absolute Weight ◽

Random Design ◽

Dose Control ◽

Leaf Powder ◽

Survival And Growth

The use of phytopharmaca is not well known to all tilapia farmers, especially in Gresik Regencywhich is partly cultivation of Oreochromis niloticus tilapia fish.Demand for tilapia in the marketis quite high as the number of restaurants that make tilapia as one of the menu.Cinnamomumburmanii, cinnamon leaf powder is dried and crushed and easy enough to make it effectivelycheaper than chemicals that are expensive enough to improve the survival and growth oftilapia.This study aims to determine the best dosage of the addition of Cinnamomum burmanii,cinnamon leaf powder.The method used was complete random design (CRD) with treatment ofdose of cinnamon leaf dose (control), 0.25%, 0.5%, 1%/kg of feed per treatment consisted of 3replications.Parameters observed for survival, absolute weight and daily growth rate. The resultsof this study showed that the best dosage of cinnamon leaf powder had a significant effect onsurvival, absolute weight and daily growth rate of tilapia.The best dosage is the addition ofcinnamon leaf powder for survival, absolute weight and daily growth rate at a dose of 0.25%/kgof feed.

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The Effect of Different Thyroxine Hormone (T4) Concentration on The Growth, Survival, and Pigment Development of Pink Zebra Fish Larvae (Brachydanio reiro)

Omni-Akuatika ◽

10.20884/1.oa.2018.14.2.538 ◽

2018 ◽

Vol 14 (2) ◽

Author(s):

Arifianto Heraedi ◽

Slamet Budi Prayitno ◽

Tristiana Yuniarti

Keyword(s):

Growth Rate ◽

Survival Rate ◽

Specific Growth Rate ◽

Specific Growth ◽

Fish Larvae ◽

Average Length ◽

Average Weight ◽

Zebra Fish ◽

Total Length ◽

Absolute Growth

The thyroxin hormone plays an important role in the process of metabolism, yolk sac absorbsion, and growth of fish. The aims of this research were to observe the effect of various concentration of thyroxin (T4) on the absolute growth weight, total length, survival rate, and pigment development of pink zebra fish larvae (Brachydanio reiro ) after being reared 42 days. The pink zebra fish larvae at 4 day age with the average weight of 0,002 – 0,003g and average length of ± 3.10 – 3.43 mm were immersed at various concentration of T4 for 24 hours. Prior the treatment fish larvae were dipped into 1 ppt salinity for 2 minutes then transferred into 1 Liter, 1ppt saline and various T4 in plastic bags. The thyroxin concentrations were A (0 mg / L); B (0.05 mg / L); C (0.10 mg / L) and D (0.15 mg / L) respectively. The stocking density was 40 fish/L. After that they were transferred into aquariums and reared for 42 days. Completely Randomized Design (RAL) with four treatments and three replications were used. The variables observed were absolute and specific growth, total length, survival rate and hue degree. The results showed that the thyroxin hormone had significant effect on absolute growth weight, total length and specific growth rate. The dosage 0.1 mg/L was the best treatment on absolute growth, total length, and specific growth rate. Whilee the survival rate showed no significant differences across the treatments. Treatment C also demonstrated the best ppigment development (14.60 + 0.36º hue) compared to others.

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