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

2015 ◽  
Vol 14 (2) ◽  
pp. 159 ◽  
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

<p class="NoParagraphStyle" align="center"><strong>ABSTRACT</strong></p><p class="NoParagraphStyle" align="center"> </p><p class="NoParagraphStyle">The growth rate between male and female red tilapia <em>Oreochromis</em> 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.</p><p class="NoParagraphStyle"> </p><p class="NoParagraphStyle">Keywords: 17α-methyltestosterone, sex reversal, red tilapia, temperature</p><p class="NoParagraphStyle"> </p><p class="NoParagraphStyle"> </p><p class="NoParagraphStyle" align="center"><strong>ABSTRAK</strong></p><p class="NoParagraphStyle"> </p><p class="NoParagraphStyle">Ikan nila merah <em>Oreochromis</em> 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.</p><p class="NoParagraphStyle"> </p><p>Kata kunci: 17α-metiltestosteron, alih kelamin, ikan nila merah, suhu</p>

scholarly journals Effect of Fermented Lamtoro Leaf (Leucaena leucocephala) Meal on Growth Rate of Giant Gourami Fingerlings (Osphronemus gouramy)

2020 ◽  
pp. 1-8
Author(s):  
Choirun Nissa Ramadhani ◽  
Yuli Andriani ◽  
Ibnu Bangkit Bioshina Suryadi ◽  
Kiki Haetami
Keyword(s):  
Growth Rate ◽  
Nutrient Content ◽  
Fish Growth ◽  
Feed Conversion ◽  
Daily Growth ◽  
Leaf Meal ◽  
Crude Fiber Content ◽  
Commercial Feed ◽  
Feed Control ◽  
Test Fish

This research aims to determine the percentage of the addition of fermented lamtoro leaf on fish growth rate of gourami fingerlings. The test fish used was gourami that amounted to 320 tails with a length of 4-6 cm from Farming Development Gurame and Nilem – Singaparna, Tasikmalaya. The container used in this research was an aquarium with a total of 16 pieces with a size of 40 × 30 × 30 cm3. The density of gourami fingerlings during the research was 20 fish-tails/aquarium with long maintenance of 40 days. The feed given is 5% of the fish body biomass. The research was conducted on 8 November 2019 until 14 February 2020 at the Fisheries Laboratory, Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran, Indonesia. This research used experimental method with Completely Random Design (CRD), which consists of four treatments and four times the repeated feeding of commercial feed (control), the leaf meal of lamtoro fermentation result 10%, 15%, and 20%. Based on the results of the research, fermentation of lamtoro leaves can improve nutrient content after fermentation, seen from the presence of increased protein content from 21.88% to 26.11% and decrease in crude fiber content from 46.33% to 20.85%. The addition of lamtoro leaf meal fermentation results up to 15% in commercial feed resulting in a daily growth rate of 1.90%, feed conversion ratio of 2.05 and the survival rate of 70%.

scholarly journals Pertumbuhan dan konsumsi pakan ikan lele (Clarias sp.) yang diberi pakan berbahan baku lokal

DEPIK ◽  
2015 ◽  
Vol 4 (1) ◽  
Author(s):  
Zaenal Abidin ◽  
Muhammad Junaidi ◽  
Paryono . ◽  
Nunik Cokrowati ◽  
Salnida Yuniarti
Keyword(s):  
Growth Rate ◽  
Rice Bran ◽  
Fish Meal ◽  
Feed Consumption ◽  
Corn Meal ◽  
Feed Conversion ◽  
Daily Growth Rate ◽  
Daily Growth ◽  
Commercial Feed

<p><strong><em>Abstract. </em></strong><em>Fish meal, corn, and rice bran are feed ingredient which easily obtained. Different of quality and amount of each ingredients in fish feed result a various respons on fish.  </em><em>The ai</em><em>m of this study were </em><em>to determine respon of growth and feed consumption of walking cat fish (Clarias sp.) which fed feed made of fish meal, rice bran, and corn. The e</em><em>xperimental diets containing fish meal, corn </em><em>meal, and rice bran meal, respectively A. 70;10:19,5.; B. 60;25;14,5 C=60,19,75:19,75; D=60:9,5:30, and the other diets, E and F, were commersial diets. Daily growth rate, feed consumption, feed eficiency, and feed conversion ratio showed significant differences </em><em>(p&gt;0,05) among the treatments. In general, feed consumption rate, daily growth rate, feed efficiency, and feed conversion rate were best obtained on commercial feed, while feed made from local ingredients showed lower performance than commercial feed. The low quality of feed local ingredients were caused by used low quality of local ingredients which caused the level minimum of fibre and ash were high in 17,9% and 23,5%, respectively. The utilization of Local fish meal 60-70%, corn meal 9,5-19,75%, and rice bran meal 14,5-30% in fish diet did not result better growth performance than commercial diet, however the best formulation for local ingredients of fish meal, corn meal, rice bran meal were 60%; 19,75%; 19,75% and 60%; 9,5%;30 % respectively </em></p><p><strong><em>Keywords</em></strong><em> : Corn </em><em>meal; diets; feed consumption; </em><em>fish meal; growth; </em><em>rice bran; </em><em>walking catfish (Clarias sp.</em>)</p><p><strong>Abstrak.  </strong>Tepung ikan, jagung dan dedak padi adalah merupakan bahan baku yang mudah diperoleh dan dapat digunakan sebagai bahan baku pakan ikan, meskipun demikian perbedaan kualitas setiap jenis bahan baku dan jumlah pengggunaan setiap bahan baku dalam pakan dapat menghasilkan respon yang berbeda terhadap ikan. Penelitian ini bertujuan untuk mengetahui respon pertumbuhan dan konsumsi pakan ikan lele (<em>Clarias</em> sp.) yang diberikan pakan berbahan tepung ikan, tepung dedak padi, dan tepung jagung. Pakan uji yang dicobakan adalah pakan dengan komposisi tepung ikan: tepung jagung, dan: tepung dedak yang berbeda yaitu masing-masing A=70:10:19,5; B=60:25:14,5; C=60:19,75:19,75; D=60:9,5:30, serta dua pakan komersial yaitu E dan F Hasil penelitian menunjukkan bahwa pakan dengan komposisi bahan baku yang berbeda berpengaruh (<em>p&lt;0,05</em>) terhadap laju pertumbuhan harian, tingkat konsumsi pakan, efisiensi pakan dan rasio konversi pakan. Tingkat konsumsi pakan, laju pertumbuhan harian, efisiensi pakan dan rasio konversi pakan yang terbaik diperoleh pada pakan komersial sedangkan pakan yang berbahan baku lokal menunjukkan tampilan yang lebih rendah dibandingkan pakan komersial. Rendahnya kualitas pakan berbahan baku lokal diduga disebabkan oleh bahan baku lokal  yang digunakan memiliki kualitas yang rendah sehingga menghasilkan pakan dengan kandungan serat kasar dan abu yang tinggi masing-masing minimal 17,9% dan 23,5%. Penggunaan bahan baku local yaitu tepung ikan 60-70%, tepung jagung 9,5-19,75% dan dedak 14,5 – 30% belum dapat menghasilkan tampilan pertumbuhan yang lebih baik dibandingkan dengan pakan komersial, meskipun demikian formulasi terbaik  pakan berbahan baku lokal diperolah pada komposisi tepung ikan; jagung; dedak adalah 60%; 19,75%; 19,75% dan 60%; 9,5%;30 %.</p><p><strong>Kata kunci</strong>    : Ikan lele (<em>Clarias sp</em>.); konsumsi pakan; pakan; pertumbuhan; tepung dedak; tepung ikan; tepung jagung</p>

scholarly journals PERTUMBUHAN BENIH IKAN BAUNG (Hemibagrus nemurus) HASIL DOMESTIKASI PADA LOKASI DENGAN KETINGGIAN BERBEDA

2018 ◽  
Vol 13 (2) ◽  
pp. 59
Author(s):  
Jojo Subagja ◽  
Vitas Atmadi Prakoso ◽  
Otong Zenal Arifin ◽  
Yanto Suparyanto ◽  
Endang Haris Suhud
Keyword(s):  
Growth Rate ◽  
Water Temperature ◽  
Sea Level ◽  
Fish Species ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Fish Growth ◽  
Feed Conversion ◽  
Daily Growth ◽  
Low Altitude

Ikan baung (Hemibagrus nemurus) merupakan salah satu ikan asli yang terdapat di Indonesia. Ikan ini memiliki harga lebih tinggi dibandingkan beberapa jenis ikan lainnya yang telah populer di kalangan konsumen. Saat ini, ikan ini sedang pada program domestikasi dimana informasi mengenai lokasi yang sesuai untuk pemeliharaan ikan baung belum banyak dipelajari. Penelitian ini bertujuan untuk mengevaluasi pertumbuhan benih ikan baung pada dua lokasi pemeliharaan dengan ketinggian yang berbeda. Penelitian dilakukan pada lokasi dengan ketinggian rendah (< 200 m dpl) di daerah Cijengkol dan lokasi dengan ketinggian sedang (200-400 m dpl) di daerah Maleber, Jawa Barat. Benih ikan baung hasil domestikasi (bobot: 21,62 ± 0,57 g) ditebar pada tiga buah jaring masing-masing berukuran 2 m x 2 m x 1 m dengan padat tebar 15 ekor/m3 di kolam berukuran 40 m x 20 m yang terletak pada masing-masing lokasi pengujian. Ikan diberi makan dengan pakan komersial (30% protein) sebanyak 5% biomassa per hari dengan frekuensi pemberian pakan dua kali sehari selama 180 hari masa pemeliharaan. Kualitas air yang diamati meliputi suhu, oksigen terlarut, dan pH. Parameter yang diukur yaitu pertambahan panjang, pertambahan bobot, laju pertumbuhan spesifik, rata-rata pertumbuhan harian, pertambahan biomassa, rasio konversi pakan, dan sintasan. Hasil penelitian menunjukkan bahwa benih ikan baung yang dipelihara pada ketinggian < 200 m dpl menunjukkan pertambahan bobot dan biomassa yang lebih baik (30,93 ± 2,29 g dan 7,44 ± 0,79 kg) dibandingkan jika dipelihara pada ketinggian 200-400 m dpl (22,32 ± 1,26 g dan 5,97 ± 0,65 kg) (P<0,05). Rasio konversi pakan pada ikan baung yang dipelihara pada dataran rendah lebih rendah (2,37) dibandingkan jika dipelihara pada dataran sedang (2,68). Suhu air pada ketinggian < 200 m dpl lebih tinggi dibandingkan pada ketinggian 200-400 m dpl (P<0,05). Benih ikan baung tumbuh lebih optimal jika dipelihara di daerah dataran rendah, karena pada daerah tersebut memiliki suhu lebih tinggi yang dapat memengaruhi laju pertumbuhan.Asian redtail catfish (Hemibagrus nemurus) is one of Indonesia’s native fish species. This species has a higher commercial value compared to some other fish species already popular among consumers. The fish is currently under a domestication program which information regarding the suitable rearing location has yet to be established. This research was aimed to study the growth of Asian redtail catfish fingerlings reared in two different-altitude locations. The evaluate was conducted at low-altitude location (< 200 m above sea level) in Cijengkol area and mid-altitude location (200-400 m above sea level) in Maleber area, West Java. In each location, the fingerlings of domesticated Asian redtail catfish (weight: 21.62 ± 0.57 g) were stocked in three net cages sized 2 m x 2 m x 1 m in a pond (40 m x 20 m) with a stocking density of 15 fish/m3 per net cage. The fingerlings were fed with commercial feed (30% protein) of 5% fish biomass per day with feeding frequency twice a day for the period of 180 days. The water quality parameters observed were temperature, dissolved oxygen, and pH. The measured experimental parameters were length gain, weight gain, specific growth rate, average daily growth, biomass gain, feed conversion ratio, and survival rate. The results showed that the fish reared at <200 m above sea level had better weight and biomass gains (30.93 ± 2.29 g and 7.44 ± 0.79 kg) than that of the fish reared at 200-400 m above sea level (22.32 ± 1.26 g and 5.97 ± 0.65 kg) (P<0.05). The feed conversion ratio of fingerlings reared at the low-altitude location was lower (2.37) than those of the mid-altitude location (2.68).The water temperature at < 200 m above sea level was significantly higher than that of 200-400 m above sea level (P<0.05). The growth of Asian redtail catfish fingerlings is more optimal in lowland areas due to higher water temperature accelerating the fish growth rate.

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

2021 ◽  
Vol 11 (5) ◽  
pp. 16-22
Author(s):  
Lanan Wassy SOROMOU ◽  
Berthin THEA ◽  
Yamoussa BANGOURA ◽  
Aboubacar Mabinty CAMARA ◽  
Samba MAGASSOUBA ◽  
...  
Keyword(s):  
Growth Rate ◽  
Oreochromis Niloticus ◽  
Specific Growth ◽  
Hormonal Treatment ◽  
Sex Reversal ◽  
Average Weight ◽  
Male Population ◽  
Daily Growth ◽  
Republic Of Guinea ◽  
Males And Females

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.

scholarly journals The Effect of Difference Culture Media Maggot Black Soldier Fly Hermetia illucens (Linnaeus, 1758) (Diptera: Stratiomyidae) on the Growth of Striped Catfish Seeds Pangasianodon hypophthalmus (Sauvage, 1878) (Pangasiidae)

2021 ◽  
pp. 32-42
Author(s):  
Kiki Haetami ◽  
Yayat Dhahiyat ◽  
Ibnu Bangkit Bioshina Suryadi ◽  
Bagja Satria Zulkarnaen
Keyword(s):  
Growth Rate ◽  
Feed Efficiency ◽  
Culture Media ◽  
Mixed Media ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Feed Conversion ◽  
Daily Growth ◽  
Commercial Feed ◽  
Striped Catfish

The purpose of this study was to determine the type of maggot media that can produce the highest survival, growth, feed efficiency and lowest feed conversion ratio (FCR) to Striped catfish fingerling. This research was conducted during July 2020 – January 2021 at the Laboratory of Building 4, Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran. The research method was carried out experimentally using the Completely Randomized Design (CRD) method and four treatments. The treatment given is a combination of commercial feed and maggot with different media consisting of A (50% commercial feed + maggot with 50% mixed media), B (50% commercial feed + maggot with 50% fruit media), C (50% commercial feed + maggot with 50% layer media) and D (50% commercial feed + maggot with 50% bran media). The parameters observed were survival, daily weight growth rate, length, feed efficiency, food conversion ratio and water quality. . Giving a combination of 50% commercial feed and cultured maggot with mixed media of 50% gave the best daily growth rate, length growth and feed efficiency results, namely 1.23%, 0.99% and 62.79% and the lowest feed conversion ratio value. that is 1.67.

SUBSTITUSI FERMENTASI BUNGKIL KELAPA SAWIT DALAM PAKAN BUATAN TERHADAP PERTUMBUHAN DAN KELANGSUNGAN HIDUP BENIH IKAN GURAMI (OSPHRONEMUS GOURAMY)

2016 ◽  
Vol 4 (1) ◽  
Author(s):  
Farida . ◽  
Eka Indah Raharjo ◽  
Arnis Maylinda Sari
Keyword(s):  
Growth Rate ◽  
Palm Oil ◽  
Palm Kernel ◽  
Specific Weight ◽  
Feed Conversion ◽  
Daily Growth Rate ◽  
Daily Growth ◽  
Average Growth ◽  
Fermentation Residue ◽  
Average Average

ABSTRAKPenelitian bertujuan untuk mengetahui penggunaan fermentasi bungkil kelapa sawit dalam pakan buatan.Penelitian menggunakan Rancangan Acak Lengkap (RAL) yang terdiri dari 4 perlakuan 3 ulangan.Susunan perlakuan adalah Perlakuan A : bungkil kelapa sawit 12%, Perlakuan B : fermentasi bungkil kelapa sawit 15%, Perlakuan C : fermentasi bungkil kelapa sawit 18%, Perlakuan D : fermentasi bungkil kelapa sawit 21%. Penelitian ini dilakukan selama 60 hari untuk mengetahui laju pertumbuhan spesifikberat, laju pertumbuhan harianpanjang, konversi pakan, kelangsungan hidup dan kualitas air sebagai penunjang.Hasil penelitian menunjukkan pemberian pakan buatan dengan fermentasi bungkil kelapa sawit menghasilkan respon yang baik terhadap pertumbuhan ikan gurami. Pemberian pakan buatan dengan fermentasi bungkil kelapa sawit 18% (perlakuan C), memberikan hasil terbaik dengan laju pertumbuhan dengan rata – rata laju pertumbuhan spesifik berat 1.502%, laju pertumbuhan harian panjang 4.06%, nilai konversi pakan rata – rata 3.48 dan kelangsungan hidup rata – rata 90%.Kata Kunci : Fermentasi Bungkil Kelapa Sawit, Ikan Gurami, Laju PertumbuhanThe study aims to determine the use of fermentation residue oil palm in artificial feed .Research using a completely randomized design ( CRD ), which consists of 4 treatment three replications.The composition of the treatment is the treatment  A : 12 % of palm oil cake , Treatment B : fermented palm oil cake 15 % , Treatment C : fermented palm oil cake 18 % , Treatment D : fermentation residue palm oil 21 %.This research was conducted for 60 days to determine the specific growth rate of heavy , long daily growth rate , feed conversion , survival and quality of water as a supporter.The results showed the artificial feeding with fermented palm cake to produce a good response to the growth of carp.Feeding artificially by fermentation cake palm oil 18 % ( treatment C ) , gives the best results with a growth rate with the average - average growth rate of the specific weight of 1.502 % daily growth rate long- 4:06 % , the value of feed conversion average - average 3:48 and median survival - average of 90 % .Keywords : Fermentation Palm Kernel Oil, Fish carp, Growth Rate

scholarly journals UTILIZATION OF MARINE FUNGAL Nodulisporium sp. KT29 METABOLITES TO IMPROVE THE PRODUCTION PERFORMANCE OF MARINE CULTURE OF WHITE SHRIMP

2017 ◽  
Vol 8 (2) ◽  
pp. 747
Author(s):  
Fazril Saputra ◽  
Dinamella Wahjuningrum ◽  
Kustiariyah Tarman ◽  
Irzal Effendi
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Production Performance ◽  
White Shrimp ◽  
Feed Conversion ◽  
Daily Growth Rate ◽  
Daily Growth ◽  
Marine Culture

<em>This study aimed to determine the best dose of administration of marine fungal <span style="text-decoration: underline;">Nodulisporium</span> sp. KT29 metabolites to improve the production performance of marine culture of white shrimp. The experimental animals used were white shrimp <span style="text-decoration: underline;">Litopenaeus</span> <span style="text-decoration: underline;">vannamei</span> post larvae 12, which were reared in the sea using floating net cages with a stocking density of 700 post larvae/net. Experimental design used was a completely randomized design consisting of 3 treatments with 3 replications; control without the administration of <span style="text-decoration: underline;">Nodulisporium</span> sp. KT29 metabolites, dietary of feed containing <span style="text-decoration: underline;">Nodulisporium</span> sp. KT29 metabolites at doses of 20 mL/kg of feed and 40 mL/kg of feed. The results showed that survival rate, absolute length growth, weight gain, daily growth rate and feed conversion ratio in treatment groups were better than the control (P&lt;0.05). The administration of marine fungal <span style="text-decoration: underline;">Nodulisporium</span> sp. KT29 metabolites at a dose of 20 mL/kg of feed could improve the production performance of white shrimp cultivated in the sea with survival rate, daily growth rate and feed conversion ratio: 66.61±6.94%, 20.18±0.39 %/day and 3.20±0.22, respectively.</em>

scholarly journals Production performance and physiology response of Anguilla bicolor bicolor rearing with a wet, damp and dry system

2020 ◽  
Vol 20 (2) ◽  
pp. 117
Author(s):  
Eko Harianto ◽  
Eddy Supriyono ◽  
Tatag Budiardi ◽  
Ridwan Affandi ◽  
Yani Hadiroseyani
Keyword(s):  
Growth Rate ◽  
Performance Studies ◽  
Body Height ◽  
High Water ◽  
The Body ◽  
Production Performance ◽  
Feed Conversion ◽  
Randomized Design ◽  
Commercial Feed ◽  
Absolute Growth

Aquaculture is is often constrained by the availability of water, both in quality and quantity. The aim of this study was to determine the optimum maintenance system of elver (Anguilla bicolor bicolor) on a wet, moist and dry system through production performance studies and physiological responses. The research was conducted from August to September 2018 at the Production Technic and Management of Aquaculture Laboratory, Department of Aquaculture, IPB University. A completely randomized design with 5 treatments and 3 replications was used in this study, namely treatment with high water wet system 0% of body height (A), high water wet system 50% of body height (B), high water wet system 100% of body height (C), moist system (D), and dry system (E). The body weight of elver was 18.80 ± 0.62 g which derived from fish cultivator in Bogor, West Java. Fish was fed 3 times per day at satiation with commercial feed which a protein content of 50%. Results showed that treatment C was the best result with survival rate of 100%, the specific growth rate of 0.45% day -1, the absolute growth rate of 0.07 g day 1 and feed conversion ratio of 6.57. The analysis of variance showed that the treatments showed the significant effect (P <0.05). The blood glucose value closest to the eel condition before treatment was found in the treatment C.

scholarly journals Effect of Different Routes of Vaccination against Aeromonas salmonicida on Rearing Indicators and Survival after an Experimental Challenge of Pikeperch (Sander lucioperca) in Controlled Rearing

Vaccines ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 476
Author(s):  
Patrycja Schulz ◽  
Elżbieta Terech-Majewska ◽  
Andrzej Krzysztof Siwicki ◽  
Barbara Kazuń ◽  
Krystyna Demska-Zakęś ◽  
...  
Keyword(s):  
Growth Rate ◽  
Experimental Infection ◽  
Challenge Test ◽  
Aeromonas Salmonicida ◽  
Feed Conversion ◽  
Daily Growth ◽  
Rate Condition ◽  
Recirculating Aquaculture ◽  
Recirculating Aquaculture Systems ◽  
Controlled Rearing

Bacterial diseases are a significant problem in the controlled rearing of fish. Furunculosis (Aeromonas sp.), flavobacteriosis (Flavobacterium sp.), and pseudomonadosis (Pseudomonas sp.) are currently the most frequently identified diseases in recirculating aquaculture systems of various fish species. Such a situation is also observed in pikeperch rearing. Due to the emerging difficulties of effective prophylaxis using commercial vaccines, interest in the use of autovaccinations is increasing, not only in ichthyopathology but also in other veterinary fields. Our research aimed to assess the effect of the vaccination method on the overall condition of the fish and survival after the experimental infection with Aeromonas salmonicida. Pikeperch were vaccinated by (1) bath, (2) a single i.p. injection, or (3) feed. The fish were measured and weighed on day 0 and after 28 and 56 days of the experiment. Specific growth rate, daily growth rate, condition factor, and feed conversion ratio were calculated. On days 7, 14, 21, and 28 of the experiment, ceruloplasmin and lysozyme levels were rated. In addition, a challenge test was performed. The obtained results showed that the method of vaccination is important and affects the growth of fish, the overall condition of fish, and survival after experimental infection.

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