scholarly journals A production economic analysis of different stocking density and fry size combinations of milkfish, Chanos chanos , farming in Taiwan

2021 ◽  
Author(s):  
Yi‐Chung Lee ◽  
Yung‐Hsiang Lu ◽  
Jie‐Min Lee ◽  
Christian Schafferer ◽  
Chun‐Yuan Yeh ◽  
...  
Keyword(s):  
Economic Analysis ◽  
Stocking Density ◽  
Chanos Chanos ◽  
Production Economic

scholarly journals Histological Observation Of Milkfish Organs With Stunting Phenomenon

2021 ◽  
Vol 9 (1) ◽  
pp. 1
Author(s):  
Muhammad Aris ◽  
Sudirto Malan
Keyword(s):  
Nutritional Value ◽  
Slow Growth ◽  
Stocking Density ◽  
Normal Growth ◽  
Farming Systems ◽  
Gill Tissue ◽  
Fish Farming ◽  
Chanos Chanos ◽  
Cultivation System ◽  
Live Bait

Milkfish (Chanos chanos) is an important economic fish. Milkfish is widely consumed because it has high nutritional value. Milkfish is also used as live bait for fishing. In the milkfish cultivation system, increasing production is a very important factor. One of the efforts to increase production in fish farming systems is the application of high stocking density. Constraints to the application of the high stocking density cause the growth of milkfish to be non-uniform, some of them even experience stunting, which is a condition in which the fish experience slow growth. This study aims to observe the condition of the milkfish tissue with normal growth and stunted fish. Milkfish (Chanos chanos) used are fish that have been reared for 6 months. Fish organs that were sampled for observation were stunted and normal (non-stunting) fish. The organs observed were the gills, muscles, and intestines. The results showed that stunted milkfish (Chanos chanos) affected the condition of the gill tissue, muscles, and intestines. The gills are edema and necrosis. Muscles undergo edema, degeneration of muscle fibers, and necrosis. The intestine experiences necrosis or cell death.Keywords: Milkfish; Stunting; Histology.AbstrakIkan Bandeng (Chanos chanos) merupakan ikan bernilai ekonomis penting. Ikan Bandeng banyak dikonsumsi karena mempunyai nilai gizi yang tinggi. Ikan bandeng juga dimanfaatkan sebagai umpan hidup untuk penangkapan ikan. Pada sistem budidaya ikan Bandeng peningkatan produksi menjadi faktor yang sangat penting. Salah satu upaya peningkatan produksi pada sistem budidaya ikan adalah dengan aplikasi padat tebar yang tinggi. Kendala penerapan padat penebaran yang tinggi menyebabkan pertumbuhan ikan Bandeng tidak seragam, bahkan beberapa diantaranya mengalami stunting yang merupakan suatu kondisi dimana ikan mengalami lambatnya pertumbuhan. Penelitian ini, bertujuan untuk mengamati kondisi jaringan ikan bandeng dengan pertumbuhan normal dan ikan yang mengalami stunting. Ikan Bandeng (Chanos chanos) yang digunakan adalah ikan yang telah dipelihara selama 6 bulan. Organ ikan yang menjadi sampel pengamatan adalah ikan yang mengalami stunting dan normal (non-stunting). Organ yang diamati adalah insang, otot, dan usus. Hasil penelitian menunjukan ikan Bandeng (Chanos chanos) yang mengalami stunting mempengaruhi kondisi jaringan insang, otot dan usus. Insang mengalami edema dan necrosis. Otot mengamali edema, degenerasi serabut otot, dan necrosis. Usus mengalami necrosis atau kematian sel.Kata kunci: Ikan Bandeng, Stunting, Histologi

Penyuluhan Teknologi Pembenihan Ikan Bandeng Untuk Mendorong Kemandirian Produksi Benih Ikan Bandeng Di Kabupaten Bima Provinsi Nusa Tenggara Barat

2020 ◽  
Vol 2 (2) ◽  
pp. 124-132
Author(s):  
Alis Mukhlis ◽  
Nadirah Karimatul Ilmi ◽  
Sanca Rahmatullah ◽  
Anita Prihatini Ilyas ◽  
Awan Dermawan
Keyword(s):  
Brackish Water ◽  
Economic Value ◽  
Stocking Density ◽  
Public Understanding ◽  
Study Program ◽  
Chanos Chanos ◽  
Bay Area ◽  
Vocational Program ◽  
Brackish Water Fish

Milkfish (Chanos chanos Forskal) is one of the high economic value of brackish water fish and it has become the main commodity of brackish water fisheries for Bima Regency. Bima Bay was the center of milkfish production in Bima Regency with a pond area of around 1,612.16 Ha. Fishponds were spread in 3 (three) districts, namely Bolo sub-district covering 759.95 Ha, Woha sub-district covering 765.82 Ha, and Palibelo sub-district covering 86.39 Ha. As many as 11.41% of the total area of ponds used for milkfish enlargement throughout the year, while 88.59% used for milkfish enlargement and salt production alternately. The area of a pond was about 0.25-0.65 Ha using a stocking density of 4.000-6.000 milkfish fry/pond. The number of seeds needed for the Bima bay area was around 27.4 million per year. Even though milkfish hatchery technology has developed, the technology is not yet understood by milkfish farmers. Therefore, extension activities need to be carried out with the aim of increasing public understanding of seedling and quality of seedlings produced so that the independence of seed production in the future can be realized. Aquaculture Study Program of Vocational Program at Bima Regency of Mataram University conducted a counseling activity in Bima Regency in September 2019 with the theme is Milkfish Hatchery (Chanos chanos Forskal) Household Scale, Opportunities and Problems. It was attended by about 40 target communities, namely Milkfish Farmers in the Bima Bay area. Based on communication during counseling, there needs to be a demonstration plot for Milkfish Hatchery in Bima Regency as a place for training and learning related communities

scholarly journals RNA/DNA ratio in milkfish (Chanos Chanos) larvae reared at different stocking densities

2019 ◽  
Vol 3 (1) ◽  
pp. 13-17
Author(s):  
Rukisah Saleh ◽  
Sitti Raehanah Muhamad Shaleh ◽  
Saleem Mustafa ◽  
Sujjat Al-Azad
Keyword(s):  
Culture System ◽  
Fish Larvae ◽  
Stocking Density ◽  
Limiting Factor ◽  
Maturity Stage ◽  
Stocking Rate ◽  
Induce Stress ◽  
Adult Fish ◽  
Chanos Chanos ◽  
Aquaculture System

Stocking density can induce stress in fish in an aquaculture system if not handled properly, and the chronic stress may lead to mortality. Several studies have reported that the capability to deal with a range of stocking densities differs among fish species and maturity stage. Hence, fish larvae may have different resilience to stress from the adult fish. Milkfish larvae were reared in hatchery for 50 days using a recirculating culture system at four different stocking densities (8,12,16 and 20 larvae/liter). The growth performance was not significantly different (P>0.05) except at stocking density of 20 larvae/liter. The highest survival rate (88.04%) was recorded in the system with 8 larvae/liter while the lowest (55.44%) in the culture tank where stocking rate was 20 larvae/liter. The stocking density also influenced the RNA / DNA ratio of the milkfish larvae. The RNA/DNA ratio showed a pattern that was identical with that of sigmoid growth where stocking rate of 8, 12, and 16 larvae/liter gained weight until 30 days of rearing. Highest RNA/DNA ratio was recorded at 16 larvae/liter (2.85±0.004), while the lowest was at 20 larvae/liter (2.25±0.217). Food availability might play a limiting factor that leads to the lower RNA/DNA ratio of larvae reared at a high density due to competition.

Results from Production Economic Analysis

1955 ◽  
Vol 37 (2) ◽  
pp. 206 ◽  
Author(s):  
Glenn L. Johnson
Keyword(s):  
Economic Analysis ◽  
Production Economic

scholarly journals Rearing of Milkfish, Chanos Chanos, in Net Cages at Sea at Various Stocking Densities

2007 ◽  
Vol 1 (2) ◽  
pp. 53
Author(s):  
Kusman Sumawidjaja ◽  
T. Yusdiana ◽  
Irzal Effendi ◽  
, Dharmadi
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Key Words ◽  
Stocking Density ◽  
Stocking Rate ◽  
Chanos Chanos ◽  
Feeding Efficiency ◽  
Final Length ◽  
Net Cage ◽  
Net Cages

<p>ABSTRACT</p><p>Stocking rate of milkfish, <em>Chanos chanos</em>, from 75 to 225 fish/m<sup>3 </sup> or from 1,33 to 3,98 kg/m<sup>3 </sup> did not affect the growth rate, survival rate, feeding efficiency, and final length and weight of fish, each at 2,32%/day, 81,8%, 63,8%, and 185,2 mm and 64,0 g respectively. Final biomass (Y) increased from 3,66 to 12,05 kg/m<sup>3</sup> with the increase of stocking rate (X) with Y = 0,056 X-0,45 (p&lt;0,05).</p><p>Key words :   Milkfish<em>, Chanos chanos</em>, floating net cage, stocking density.</p><p> </p><p>ABSTRAK</p><p>Padat penebaran ikan bandeng, <em>Chanos chanos</em>, dari 75 hingga 225 ekor/m<sup>3</sup> atau dari 1,33 hingga 3,98 kg/m<sup>3</sup> tidak mempengaruhi laju pertumbuhan, kelangsungan hidup, efisiensi pemberian pakan serta panjang dan bobot ikan akhir, masing-masing dengan rata-rata 2,32%/hari, 81,8%, 63,8%, 185,2 mm dan 64,0 g. Biomasa akhir (Y) meningkat dari 3,66 hingga 12,05 kg/m<sup>3</sup> dengan meningkatnya padat penebaran (X) dengan persamaan Y = 0,056 X -0,45 (p&lt;0,05).</p><p>Kata kunci :  Ikan bandeng, <em>Chanos chanos</em>, keramba jaring apung, padat penebaran</p>

scholarly journals Community-Based Cobia, Rachycentron canadum (Linnaeus, 1766) Culture in Open Sea Cages at Olaikuda, Pamban Island, India: An Economic Analysis of Technology Transfer Initiative

2021 ◽  
Vol 34 (2) ◽  
Author(s):  
G. RAJAPRABHU ◽  
◽  
R. KIRUBAGARAN ◽  
C. SURESHKUMAR ◽  
J. SANTHANAKUMAR ◽  
...  
Keyword(s):  
Economic Analysis ◽  
Stocking Density ◽  
Average Weight ◽  
Cage Culture ◽  
Daily Growth ◽  
Rachycentron Canadum ◽  
Alternative Livelihood ◽  
Open Sea ◽  
Sea Cage ◽  
International Border

The Olaikuda Village of Pamban Island was chosen to demonstrate and transfer the open sea cage culture technology of cobia by the National Institute of Ocean Technology (NIOT). Olaikuda is a fishing hamlet with 1,000 traditional fishers who are primarily involved in trap fishing. An attempt was made to supplement their income under the societal development initiative of the NIOT. With the active participation of the local fishers of Olaikuda, 3,000 hatcheryproduced cobia, Rachycentron canadum (Linnaeus, 1766) fingerlings were stocked equally in two cages with a stocking density of 4.7 fingerlings.m-3 . The cobia stocked in sea cages were reared with the locally available low-value fishes for 8 months. The sea farmed cobia attained an average weight of 3.3 kg resulting in an average daily growth rate of 13.5 g with a survival rate of 75 %. The fish were harvested on the 245th day of culture, which yielded 7,000 kg of marketable size cobia fish (1st cage 3,687 kg and 2nd cage 3,313 kg with an FCR of 1:5.5). The harvested fish were sold at the farm gate price of USD4.42 kg-1 , fetched USD30911.84. The economic analysis revealed a profit margin of USD1.26 kg-1 . The parameters such as cost of production, productivity, profitability, socio-economic impacts of native fishers were analysed during the study. The result of this farmer-driven attempt is encouraging the farmers across the coastal states to do cage culture farming in a big way. Similar efforts in more organised massive programs will create new jobs and reduce the fishing pressure on the natural sea stocks and considered a viable alternative livelihood for the fishers’ community affected by the declining natural fishery resources and international border issues.

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