Penetapan Kebutuhan Harian Pakan Ikan Rucah untuk Penggemukan Kepiting Bakau Scylla paramamosain di Keramba Jaring Dasar

2016 ◽  
Vol 1 (1) ◽  
pp. 75
Author(s):  
Sandi Permadi ◽  
Sri Juwana
Keyword(s):  
Body Weight ◽  
Survival Rate ◽  
Scientific Information ◽  
The Body ◽  
Scylla Paramamosain ◽  
Fish Feed ◽  
Mangrove Crab ◽  
Trash Fish ◽  
Mangrove Crabs ◽  
Net Cages

<strong>Determination of Daily Requirement of Trash Fish Feed to Fatten The Mangrove Crab Scylla paramamosain in Bottom Net Cages.</strong> Mangrove crab fattening is part of the crab farming activities that attracts the interests of the farmers due to its relatively short period, i.e. 14–21 days per cycle. Trash fish is a natural feed for Mangrove crabs that is easily available at an affordable price. Scientific information on the daily requirement of trash fish feed to fatten the Mangrove crabs is still scarce. The accessable scientific information on the amount of daily feeding is still limited to the rearing of the crabs. Hence, the scientific study on the daily requirement of trash fish feed for crab fattening needs to be done. Probolinggo is one of the producing districts for Mangrove crabs and is a potential area for development of crab aquaculture. Therefore, Probolinggo was chosen as the site of this research. Crab samples utilized had a carapace width of 8–13 cm and a weight of 115–500 g. Crabs were reared in bottom net cages measuring 5 x 5 m2 with a density of 16 crabs/cage and the sex ratio of 1: 1. The study consisted of 4 treatments with 3 repetitions. The daily feeding percentages given were 10, 15, 20, and 25% of the body weight of the crabs. The parameters observed during the 13 days of experiment were growth, survival rate, and the percentage of already fatter crabs. The results showed that the daily feed ration of trash fish, as much as 10% dan 15% of the body weight of the crab, gave the best yield for crab fattening. The survival rate obtained was 70% of the initial density of 0.64 crabs/m2, with a total weight gain of 14% during the study. <br /><br />

scholarly journals The Identification Of Morphometric Characteristics And Fattenning Of Mud Crabs (Scylla spp.) In Para Island, Tatoareng District, Sangihe Islands Regency, North Sulawesi Province

2018 ◽  
Vol 7 (1) ◽  
pp. 42
Author(s):  
Aditya Sasamu ◽  
Winda M. Mingkid ◽  
Revol D. Monijung
Keyword(s):  
Body Weight ◽  
The Body ◽  
Scylla Serrata ◽  
Morphometric Characteristics ◽  
Morphometric Characters ◽  
North Sulawesi ◽  
Trash Fish ◽  
Mangrove Crabs ◽  
Mud Crabs

The purpose of this study was to identify the morphometric characters of mangrove crabs Scylla spp. and to grow them on the island of Para Sangihe Islands Regency, North Sulawesi Province. There were 2 types of crabs found during crab’s collection. However, the most abundant one was Scylla serrata while the olivacea is only one tail. The results of this study indicate that mangrove crabs that were kept for 2 weeks feed on trash fish three times a day experience growth. Based on the results of the study, it can be concluded that: the type of crab found on Pulau Para, Tatoareng District, Sangihe Islands Regency, North Sulawesi Province were mostly S. serrata (34 tails) and one tail of S. olivacea. The fattening of mangrove crabs showed results on the body weight and carapace length.Further research on mangrove crabs needs to be done on different aspects such as preferable food and time of the abundancy.Keywords: Crab, Scylla spp., identification, fattening. ABSTRAK       Tujuan dari penelitian ini adalah untuk mengidentifikasi karakter morfometrik kepiting bakau Scylla spp dan cara penggemukannya di Pulau Para Kabupaten Kepulauan Sangihe Provinsi Sulawesi Utara. Dua jenis kepiting bakau ditemukan saat pengumpulan data, namun yang ditemukan paling banyak adalah Scylla serrata, sedangkan S. olivacea hanya 1 ekor saja.Hasil penelitian ini menunjukan bahwa kepiting bakau yang dipelihara selama 2 minggu dengan diberi pakan ikan rucah sebanyak tiga kali sehari mengalami pertumbuhan. Berdasarkan hasil penelitian dapat disimpulkan bahwa: jenis kepiting yang ditemukan di Pulau Para Kecamatan Tatoareng Kabupaten Kepulauan Sangihe Provinsi Sulawesi Utara adalah Scylla serrata (34 ekor) dan S. olivacea (1 ekor). Penggemukan kepiting bakau dengan pakan ikan rucah tiga kali sehari menunjukan adanya pertumbuhan berat badan dan panjang lebar karapas.     Penelitian lanjutan tentang kepiting bakau perlu dilakukan untuk melihat berbagai aspek seperti makanan kesukaan dan waktu kelimpahanya.Kata kunci : Kepiting, Scylla spp, identifikasi, penggemukan.

scholarly journals THE EFFECT OF DENSITY TO THE SURVIVAL RATE, GROWTH AND BIOCHEMICAL COMPOSITION OF FEMALE MANGROVE CRAB (SCYLLA OLIVACEA) CULTIVATED WITH SILVOFISHERY SYSTEM

2020 ◽  
Vol 8 (6) ◽  
pp. 20-25
Author(s):  
Muhammad Yusri Karim ◽  
Khairul Amri ◽  
Hasni Yulianti Azis ◽  
Nurfadilah ◽  
Alimuddin ◽  
...  
Keyword(s):  
Survival Rate ◽  
Biochemical Composition ◽  
Block Design ◽  
The Body ◽  
Mangrove Area ◽  
South Sulawesi ◽  
Mangrove Crab ◽  
Randomized Block Design ◽  
The Difference ◽  
Mangrove Crabs

Mangrove crab silvofishery system is one of the potential aquaculture activities to be developed because it is supported by the availability of extensive mangrove areas. This research was carried out in the Mangrove Area of Mandalle Village, Pangkep Regency, South Sulawesi. The study was aimed to determine the best density of survival, growth, and chemical composition of the body of female mangrove crabs (Scylla olivacea) maintained by the silvofishery system. The research container used a step cage made of bamboo measuring 2.25 m2 wide. Tested animals used were female mangrove crabs measuring 155 ± 1.0 g which were kept for 40 days. The study was designed using a randomized block design consisting of four density treatments with three replications each. The four densities were: 5,10, 15 and 20 crabs/cage. The results of the analysis of variance showed that the difference in density has a very significant effect (p <0.01) on the survival, growth and biochemical composition of the female body of mangrove crabs. The best survival, growth, and biochemical composition produced the best density of 5 and 10 individuals, while the lowest density was 20 individuals.  

scholarly journals Morphometri Kepiting Soka yang Dipelihara pada Tambak Tradisional di Desa Mojo, Kecamatan Ulujami, Kabupaten Pemalang

2017 ◽  
Vol 6 (2) ◽  
pp. 122
Author(s):  
Sunaryo Sunaryo ◽  
Ali Djunaedi ◽  
Adi Santoso
Keyword(s):  
Body Weight ◽  
Carapace Length ◽  
The Body ◽  
Raw Material ◽  
Scylla Serrata ◽  
Mangrove Crab ◽  
Soft Shell ◽  
Before And After ◽  
Mangrove Crabs ◽  
Food Needs

Kepiting bakau (Scylla  serrata  Forsskål, 1775) merupakan salah satu sumber daya hayati laut yang dipergunakan sebagai bahan baku untuk memproduksi kepiting soka. Organisme ini mempunyai nilai ekonomis penting dan banyak dibudidayakan oleh petani tradisional untuk memenuhi kebutuhan pangan baik di pasar lokal maupun ekspor. Dikeluarkannya Keputusan Menteri No 1 Tahun 2015 membuat banyak pembudidaya maupun pengekspor Kepiting Bakau mengalami banyak kerugian karena kepiting soka yang diproduksi kebanyakan tidak memenuhi syarat ukuran yang sesuai dengan ketetapan Pemerintah. Oleh karena itu untuk mengatasi permasalahan tersebut perlu dilakukan pendekatan melalui penelitian perubahan morphometri Kepiting Bakau sebelum dan setelah moulting. Penelitian ini bertujuan untuk mengetahui hubungan panjang/lebar dan berat Kepiting Bakau pada saat sebelum dan setelah moulting yang dipelihara pada lingkungan budidaya di kawasan pertambakan di Desa Mojo, Kecamatan Ulujami, Kabupaten Pemalang. Penelitian ini menggunakan Kepiting Bakau (S. serrata Forsskål, 1775), berat 80 - 150 g, dipelihara pada bok plastik (30 x 20 x 25 cm) secara seluler, padat penebaran 15 ekor per m2. Penelitian ini menggunakan metode studi kasus. Parameter penelitian ditujukan pada pengukuran morphometri tubuh Kepiting Bakau sebelum dan setelah moulting, yaitu panjang dan lebar carapace serta berat. Parameter morphometrik bagian tubuh kepiting, meliputi: hubungan panjang carapace dan pertambahan panjang carapace, hubungan lebar carapace dan pertambahan lebar carapace, hubungan berat dan pertambahan berat tubuh kepiting bakau dianalisis menggunakan analisis regresi (Sudjana, 1982). Ukuran panjang carapace, lebar carapace dan berat kepiting bakau sebelum moulting satu sama lain menunjukkan adanya pola korelasi linier positif. Pola korelasi yang sama ditunjukkan juga pada hubungan antara ukuran panjang carapace, lebar carapace dan berat Kepiting Bakau sebelum moulting dengan pertambahan panjang carapace, lebar carapace dan berat Kepiting Bakau setelah moulting. Pertumbuhan panjang carapace, lebar carapace dan berat kepiting bakau pada saat moulting masing – masing secara berurutan dicapai sebesar 12,26 % ± SD 5,57 %, 13, 65 % ± SD 3,59 %, 23,46 % ± SD 10,934 %. Dengan diketahuinya parameter tersebut dapat dipergunakan sebagai parameter penentu pemilihan ukuran Kepiting Bakau sebagai bahan baku produksi kepiting soka yang sesuai dengan ketetapan peraturan pemerintah.  Mangrove crabs (Scylla serrata Forsskål, 1775) is one of the biological resources of the sea, that is used as raw material for soft shell crab production. This organism have economically important value and has been widely cultivated by traditional farmers to meet food needs in both the local and export markets. Assigned KepMen No 1 Tahun 2015 made more mangrove crab culturer and exporter were loss in bussines because the producing soft shell crab was not apropriate with the gorverment regulation. Therefore to solve this problem was importantly done the approach through the research about the change of morphometric of mangrove crab before and after moulting.This research was aimed to know the correlation between carapace length, carapace wide and weight of mangrove crab before and after moulting thats reared in the environment culture of brackishwaterpond area in Mojo Village, Ulujami District, Pemalang Regency. This research used mangrove crab (S. serrata Forsskål, 1775), the body weight size of 80-150 g, individually kept in plastic boxes (30 x 20 x 25 cm), 15 pieces per m2 density. Research was carried out using case study method. The research parameters were aimed on the meassuring of the mangrove crab morphometric before and after moulting, such as: carapace  length, carapace wide and body weight.  Morphometric parameters of mangrove crab body, include the rellation of carapace lenght and body weight, carapace wide and body weight, carapace lenght and carapace wide were analyzed with regression metode (Sudjana, 1982). Carapace  length, carapace wide and body weight before moulting one anothers showed a regression of linier positive model. The same correlation model were showed on the correlation between carapace lenght, carapace wide and body weight of mangrove crab before moulting with the addition of carapace  length, carapace wide and body weight of mangrove crab after moulting, each following order, are: 12,26 % ± SD 5,57 %, 13, 65 % ± SD 3,59 %, 23,46 % ± SD 10,934 %. This parameter could be used as defining parameter to choose the size of mangrove crab as raw material for soft shell crab production that appropriate to the goverment regulation. 

scholarly journals PERTUMBUHAN LARVA DAN PRODUKSI BENIH IKAN KERAPU BEBEK Cromileptes altivelis Valenciennes, 1828 HASIL BUDIDAYA TURUNAN KE-3

2018 ◽  
Vol 10 (3) ◽  
pp. 589-600
Author(s):  
Regina Melianawati ◽  
Ni Wayan Widya Astuti ◽  
. Tridjoko
Keyword(s):  
Body Weight ◽  
Survival Rate ◽  
Seed Production ◽  
Larval Growth ◽  
The Body ◽  
Third Generation ◽  
Larval Body ◽  
Spine Length ◽  
The Third ◽  
Total Length

ABSTRAKKetersediaan induk dalam suatu usaha pembenihan memiliki peran yang sangat penting. Namun demikian, ketersediaan induk yang berasal dari alam sangat terbatas jumlahnya, sehingga perlu dilakukan penyediaan calon induk yang berasal dari hasil budidaya. Ikan kerapu bebek Cromileptes altivelis Valenciennes, 1828 turunan pertama (F-1) dan turunan kedua (F-2) sudah dapat diproduksi dari hasil budidaya, namun benih turunan ketiga (F-3) belum dapat diperoleh. Penelitian ini bertujuan untuk mendapatkan karakteristik morfologis dan pertumbuhan larva ikan kerapu bebek F-3 sebagai calon induk F-3, serta tingkat keberhasilan produksi benihnya. Pemeliharaan larva dilakukan dalam hatchery hingga larva menjadi benih. Parameter yang diamati meliputi panjang total dan panjang duri sirip larva, berat tubuh larva serta sintasan dan jumlah produksi benih. Hasil penelitian menunjukkan bahwa panjang total larva umur 5, 15, 25 dan 35 hari, masing-masing adalah 3,20±0,07; 4,42±1,11; 8,35±1,12 dan 12,51±3,23 mm. Duri sirip mulai terukur pada larva umur 15 hari. Berat larva umur 30 hari adalah 0,11±0,04 g. Pola pertumbuhan panjang total dan berat tubuh larva adalah eksponensial, sedangkan pola pertumbuhan duri siripnya adalah linier. Masa pemeliharaan larva hingga menjadi benih adalah ± 40 hari. Jumlah benih ikan kerapu bebek F-3 yang diproduksi dalam satu kali siklus pemeliharaan berkisar 440 hingga 2.300 ekor dari 50 ekor induk dan 3 kali siklus pemijahan dengan tingkat kelangsungan hidup 1,30% hingga 8,80%. Hasil penelitian ini mengindikasikan bahwa ikan kerapu bebek F-3 dapat diproduksi dari hasil budidaya seperti halnya pada F-1 dan F-2. ABSTRACTBroodstocks are the most important part of humpback grouper culture, but their availability in nature are limited. Therefore, it is necessary to produce broodstock candidates from culture. The first (F-1) and the second (F-2) generation of humpback grouper have already been produced but the third generation (F-3) production is still on the way. This study was conducted to find out morphological characteristic of the third generation (F-3) of humpback grouper larvae as the candidate of the third generation of broodstock, larval growth and the success rate of seed production. Larvae rearing was done in hatchery until larvae metamorphosed to be seeds. Observed variables including larval total length and spine length, larval body weight, survival rate and the juvenile productions. The study result showed the total length of 5, 15, 25 and 35 days old larvae were 3.20±0.07; 4.42±1.11; 8.35±1.12 and 12.51±3.23 mm, respectively. The spine began measured on 15 days old larvae. The body weight of 30 days old larvae was 0.11±0.04 g. The growth pattern of larval total length and body weight were exponential, while the growth of spine was linear. Rearing period from larvae to juveniles was 40 days. Number of F-3 seed production of humpback grouper produced from once rearing cycle range between 440 and 2,300 fish and the survival rate range from 1.30% up to 8.80%. Therefore, this study could indicate that seed of F-3 humpback grouper can be produced as those of F-1 and F-2.

scholarly journals Hatchability, Growth Performance, Feed Efficiency, and Survival of Normal Feathered Local, Sasso-rir and Their F1-cross Chickens Under on-station Management Condition in Southern Ethiopia

2021 ◽  
Author(s):  
shewangizaw woltamo wolde ◽  
Tadele Mirkena ◽  
Aberra Melesse ◽  
Tadelle Dessie ◽  
Solomon Abegaz
Keyword(s):  
Body Weight ◽  
Survival Rate ◽  
Growth Performance ◽  
Feed Efficiency ◽  
Body Weight Gain ◽  
The Body ◽  
Southern Ethiopia ◽  
Feed Conversion ◽  
Egg Hatchability ◽  
F1 Cross

Abstract The Normal Feathered local chicken (LL), Sasso-RIR (SRSR) and their F1-cross (LSR) chickens were hatched to evaluated for egg hatchability, growth performance, feed efficiency and survival rate. After 14-days of brooding, 150 chicks of each genotype were randomly selected and further replicated in to five pens in a deep litter grower house consisting of 30 chicks each in a completely randomized design, and evaluated for a period of 16-weeks. Hatchability of fertile eggs was highest for LL (80.0 %), intermediate for LSR (68.6%) and lowest for SRSR (55.9%) chickens. The body weight (BW) of chicks at 2-weeks of age was 80.0, 76.3 and 61.5 g/bird for SRSR, LSR, and LL, respectively, the latter being the lowest (p<0.05). The respective BW at 8-weeks of age was 732, 587 and 451 g while at 18-weeks it was 1877, 1379 and 1070 g/bird and different from each other (p<0.05). During 3- to 8-weeks and 9- to 18-weeks growth periods, the LL chickens were inferior (p< 0.05) in feed intake (29.7 and 66.9 g/d/bird) whereas the SRSR chickens were superior (p< 0.05) in body weight gain (15.5 and 16.3 g/d/bird) and feed conversion ratio (2.67 and 5.35 g feed/ g gain), respectively. The mortality rate of chicken was not affected by genotypes. It can be concluded that the exotic blood of Sasso-RIR chicken had played a significant role in upgrading the growth rate and market weight of the local Normal Feathered chicken without adverse effect on hatchability, feed efficiency, and survival rate.

Forage based fattening of male buffalo calves (Bubalus bubalis) under farmers’ managed condition in Dang district, Nepal

2009 ◽  
Vol 2009 ◽  
pp. 54-54
Author(s):  
N R Devkota ◽  
S Ghimire
Keyword(s):  
Body Weight ◽  
Cost Effectiveness ◽  
Scientific Information ◽  
Bubalus Bubalis ◽  
The Body ◽  
Buffalo Calves ◽  
Different Ages ◽  
The Cost

Buffaloes (Bubalus bubalis) are an important component of livestock in Nepal. Its population has been estimated as 4,204,886 in 2005/06 (MOAC, 2006). Buffalo calves are seldom raised for meat in Nepal (Rana et al., 2000). In cases where they are raised, they are confined until six to eight months of age, as their dams will not give milk without them (Rana et al., 2000). Scientific information on fattening of male buffalo calves is scanty. A field based study was conducted to access the body weight of male buffalo calves raised under forage based and forage based plus limited concentrate supply at different ages, to determine the cost effectiveness of fattening technology under farmers’ managed condition.

Growth of lambs receiving a supplementary milk replacer or reared traditionally in a flock of Polish Heath sheep

2018 ◽  
Vol 14 (1) ◽  
pp. 9-19
Author(s):  
Witold Rant ◽  
Marta Luisa Augustin ◽  
Aurelia Radzik-Rant ◽  
Emil Orłowski ◽  
Magdalena Bednarczyk ◽  
...  
Keyword(s):  
Growth Rate ◽  
Body Weight ◽  
Survival Rate ◽  
Body Weight Gain ◽  
The Body ◽  
Milk Replacer ◽  
Average Birth Weight ◽  
Lower Body Weight ◽  
Similar Body ◽  
Supplementary Feed

The aim of the study was to compare the body weight gain and survival rate of lambs receiving a milk replacer as supplementary feed with lambs reared traditionally. The research was conducted in a flock of Polish Heath sheep. Of 244 lambs born, 42 lambs from multiple births were given supplementary feed. The lambs received the milk replacer until the 35th day of rearing. Body weight was monitored at birth and on days 28, 56 and 100 of life. Reproductive parameters and survival rate of lambs were derived from breeding documentation. There were no significant differences in the survival rate of lambs in the two groups, which was above 80%. The average birth weight of lambs reared traditionally and of those receiving the milk replacer was similar. During the entire rearing period, the lambs that required supplementary feeding grew more slowly. Twin lambs receiving the supplement and twin lambs reared traditionally had similar body weight and daily gains up to the 56th day of life, but the twin lambs receiving supplementary feed had a significantly lower body weight at day 100 and growth rate during the entire rearing period. The growth rate of triplets fed supplementary milk replacer was not significantly different from that of triplets reared traditionally in any period of the study.

scholarly journals Penambahan nano CaO limbah cangkang kijing (Pilsbryocncha exilis) pada media bersalinitas untuk pertumbuhan ikan nila (Oreochromis niloticus)

2020 ◽  
Vol 7 (1) ◽  
pp. 1
Author(s):  
Asmaini Asmaini ◽  
Lia Handayani ◽  
Nurhayati Nurhayati
Keyword(s):  
Survival Rate ◽  
Osmotic Pressure ◽  
T Test ◽  
The Body ◽  
Average Weight ◽  
Fish Length ◽  
Fish Feed ◽  
Mussel Shell ◽  
Weight Growth ◽  
Fish Weight

Salinitas diperairan dapat menimbulkan tekanan osmosis yang berbeda dengan tekanan osmosis dalam tubuh organisme perairan. Ion Ca2+ merupakan salah satu ion yang terkandung dalam kadar salinitas yang menentukan tekanan osmosis. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penambahan nano kalsium cangkang kijing (NCCK) pada pakan dan lingkungan dalam pemeliharaan media bersalinitas 4 ppt. Penelitian ini dilakukan selama 40 hari dilaboratorium perikanan, Universitas Abulyatama. Berat rata-rata ikan pada awal penelitian yaitu 1,82 gram dengan jumlah ikan 648 ekor dengan menggunakan 9 akuarium yaitu 72 ekor/akuarium. Data dianalisis menggunakan uji T (perbandingan) antara ikan nila tanpa penambahan NCCK pada pakan dan lingkungan (A) dengan penambahan NCCK sebanyak 2% pada pakan (B) dan penambahan NCCK sebanyak 40 mg/L pada lingkungan (C). Hasil yang diperoleh antara perbandingan A dan B adalah berpengaruh nyata terhadap pertumbuhan berat namun berpengaruh terhadap pertumbuhan panjang dan kelangsungan hidup. Untuk uji T antara perlakuan A dan C berpengaruh nyata terhadap pertumbuhan panjang dan kelangsungan hidup, namun tidak berpengaruh terhadap pertumbuhan berat. Sedangkan untuk uji T antara perlakuan B dan C berpengaruh nyata terhadap kelangsungan hidup namun tidak berpengaruh terhadap pertumbuhan berat dan panjang. Kalsium mempunyai peran penting dalam proses osmoregulasi pada ikan, dengan adanya penambahan kalsium dapat mempercepat osmoregulasi. Hasil uji kadar kalsium (Ca2+) dengan proses kalsinasi menggunakan metode AAS (Atomic Absortion Spectrophotometer) adalah 77,15%.Kata kunci: cangkang kijing; nano CaO; osmoregulasi; salinitas Water salinity can cause osmotic pressure which is different from the osmotic pressure that occurs in the body of the aquatic organisms. The Ca2+ ion is one of the ions contains in salinity which can initiate the osmotic pressure. This study aims to find out the effect of nano calcium addition from the mussel shell (NCCK) in the fish feed and the environment in the 4 ppt salinity media. This research was done for 40 days in a fishery laboratory, Abulyatama University. The average weight of fish at the study was 1.82 grams, with the number of fish 648 using 9 aquariums that is 72 fish/aquarium. The data were analyzed using the t-test (comparison) between (A) tilapia without the addition of NCCK in the fish feed and environment, (B) tilapia with the 2% addition of NCCK in the fish feed, (C) tilapia with the 40mg/L addition of NCCK in the environment (C). The result obtained from the ratio of A and B shows a significant effect on fish weight growth. However, this result did not affect the fish length and survival rate. Moreover, the result from the t-test between A and C also shows a significant effect on the length and survival rate. Nevertheless, this result did not affect fish weight growth. Further, the t-test between B and C shows a significant effect on the survival rate but did not have any effect on the fish growth both in weight and length. Calcium has an essential role in the osmoregulation process in fish, with the addition of calcium can accelerate osmoregulation. The result of the Calcium (Ca2+) test with the calcination process using the Atomic Absorption Spectrophotometer (AAS) method was 77.15%.Keywords:  mussel shell; nano CaO; osmoregulation; salinity

scholarly journals DIFFERENT PERCENTAGE OF WATER EXCHANGE ON GROWTH OF CORAL TROUT GROUPER FINGERLING (Plectropomus leopardus)

2010 ◽  
Vol 2 (2) ◽  
Author(s):  
Titiek Aslianti
Keyword(s):  
Body Weight ◽  
Survival Rate ◽  
Water Exchange ◽  
Feeding Frequency ◽  
Growth And Survival ◽  
Coral Trout ◽  
Survival And Growth ◽  
Plectropomus Leopardus ◽  
The One ◽  
Net Cages

Coral trout grouper (Plectropomus leopardus) is the prospective aquaculture commodities with a high demand. Fingerling culture is the one of shortly rearing time methods for grow out in net-cages in order to produce continuously. Two hundred fishes with initial total length 16.6±0.5 cm and 72.2±7.6 g of body weight were stocked in each of three of concrete tanks of 4m3 seawater. Water replace as a treatment was applied i.e. A (200%/day), B (300%/day) and C (400%/day).respectively. Feeding frequency of pellet was done twice a day of about 3 - 5% of body weight. Survival and growth of fishes were monitored during two-month period. The result showed that the different percentage of water replace had a significant role in increasing the growth and survival rate of the fishes. Water replaced of 400% daily (treatment C) gave the best survival rate (97%) and growth performance (TL 21.61±0,54 cm; BW 156.84±1.05 g). In contrast, the treatment B (300%/day) and A (200%/day) resulted in a lower survival and growth , i.e. (SR 95.5%; TL 19.51±0.52 cm; BW 140.96±0.08 g) and A (SR 93%; TL 19.08±0.30 cm; BW 132.2±2.65 g)., respectively.Keywords: Coral trout grouper, growth, survival rate, water exchange

scholarly journals RADE-OFFS DAN COST OF PLASTICITY SIFAT PERTUMBUHAN DAN REPRODUKSI PADA PERSILANGAN UDANG GALAH (Macrobrachium rosenbergii) DALAM SALINITAS BERBEDA

2016 ◽  
Vol 1 (1) ◽  
pp. 13
Author(s):  
Wartono Hadie ◽  
Irin Iriana Kusmini ◽  
Lies Emmawati Hadie
Keyword(s):  
Body Weight ◽  
Survival Rate ◽  
Macrobrachium Rosenbergii ◽  
The Body ◽  
Cross Breeding ◽  
Trade Offs ◽  
Growth And Reproduction

Penelitian dilakukan untuk mengevaluasi pengaruh salinitas pada karakter pertumbuhan dan reproduksi dalam bentuk trade-offs dan cost of plasticity. Benih udang galah dengan bobot 0,01 ± 0,012 g dipelihara pada tiga level salinitas 0‰, 10‰, dan 15‰ dengan tiga ulangan. Sembilan persilangan diperoleh dari perkawinan antar dan dalam strain. Hasil penelitian menunjukkan bahwa pada salinitas 10‰, udang memperlambat pertumbuhan sebesar 16,4% dan pada salinitas 15‰ memperlambat pertumbuhan 34,5%. Trade-offs terjadi dengan menurunkan fekunditas sebesar 0,47% pada salinitas 10‰, dan sebesar 18,73% pada salinitas 15‰. Sintasan udang mengalami penurunan sebesar 33,04% pada salainitas 10‰, dan 41,99% pada salinitas 15‰. Pertumbuhan udang terbaik terjadi pada salinitas 0‰ dengan rataan bobot mencapai 25,16 g, sintasan sebesar 63,17%, dan fekunditas berjumlah 23.384 butir telur.Research aimed to evaluated the effects of growth and reproduction trait in salinity expressed on the trade-offs and cost of plasticity. Giant prawn juvenile 0.01 ± 0.012 g of body weight were reared at three different salinities level i.e. 0‰, 10‰, and 15‰ with three replications. Nine crosses strain were obtained from cross breeding between and within strain. Result of research indicated that salinity of 10‰, prawn slower the growth equal to 16.4% and at salinity of 15‰ slower the growth up to 34.5%. Trade-offs happened by decreasing fecundity equal to 0.47% and 18.73% at salinity 10‰ and 15‰ respectively. Decreased of survival rate were 33.04% and 41.99% at salinity 10‰ and 15‰ respectively. The best performance is that salinity of 0‰ are 25.16 g, 63.17%, and 23,384 eggs for the body weight, survival rate, and fecundity respectively.

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