scholarly journals Penambahan mineral kalsium dari cangkang kepiting bakau (Scylla serrata) pada pakan terhadap pertumbuhan dan kelangsungan hidup udang galah (Macrobrachium rosenbergii)

DEPIK ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 185-192
Author(s):  
Fajar Fajri ◽  
Azwar Thaib ◽  
Lia Handayani
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Macrobrachium Rosenbergii ◽  
Freshwater Prawn ◽  
Scylla Serrata ◽  
Mud Crab ◽  
Calcium Supplements ◽  
Calcium Addition ◽  
Calcium Source ◽  
Fisheries Waste

Abstract. Mud crab shell is one of the most fisheries waste can be utilized as calcium source because it contains lots of calcium carbonat. Utilizing of crab shells flour in fed is important applied as calcium supplements to freshwater prawn. The purpose of this research is to knows the effects of calcium addition from mud crab shells on fed to increase the growth rate, survival rate and moulting frequency freshwater prawn. The research has been done during 70 days in fisheris Laboratory, Abulyatama University. Result of the research shows that two percents calcium addition on fed give higher growth rate value, survival rate value and moulting frequency value than other treatments and were not added calcium on fed. The average of freshwater prawn growth rate are treatment A (0% CaO)= 1.20 g, B (1% CaO) = 1.41 g, C (2% CaO) = 1.92 g, D (3% CaO) = 1.77 g. The average of freshwater prawn survival rate result shown by treatment A = 75 %, B = 91,1 %, C = 91,1 %, and D = 89 %. The moulting frequency value results shown by treatment A = 1,06 ; B = 1,22; C = 1,57 and D = 1,34. Keywords : Calcium, Freshwater Prawn, Macrobranchium rosenbergii, Moulting Abstrak. Cangkang kepiting bakau merupakan salah satu limbah perikanan yang dapat dimanfaatkan sebagai sumber kalsium karena cangkang kepiting mengandung kalsium karbonat tinggi. Pemanfaatan tepung cangkang kepiting pada pakan adalah sebagai suplemen. Tujuan dari penelitian ini untuk mengetahui pengaruh penambahan mineral kalsium dari cangkang kepiting bakau pada pakan untuk meningkatkan laju pertumbuhan, kelangsungan hidup dan frekuensi molting udang galah. Penelitian ini dilakukan selama 70 hari di laboratorium perikanan, Universitas Abulyatama. Hasil dari penelitian menunjukkan bahwa penambahan 2 % kalsium pada pakan memberikan hasil tertinggi untuk laju pertumbuhan, kelangsungan hiidup dan frekuensi molting udang galah dibanding perlakuan lain. Nilai rata-rata pertumbuhan udang galah tiap perlakuan adalah sebagai A (0% CaO) = 1,20 gr, B (1% CaO) = 1.41 gr, C (2% CaO) = 1.92 gr dan D (3% CaO) = 1,77 gr. Sedangkang nilai rata-rata kelangsungan hidup udang galah adalah A = 75 %, B = 91,1 %, C =91,1 % dan D = 89 %. Nilai ata-rata frekuensi molting udang galah selama pemeliharaan pada tiap perlakuan adalah A = 1,06 kali/ekor, B = 1,22 kali/ekor, C = 1,57 kali/ekor dan D = 1,34 kali/ekor. Kata kunci: Kalsium, Macrobranchium rosenbergii, Moulting, Udang Galah

scholarly journals Perbandingan frekuensi molting Lobster air tawar (Cherax quadricarinatus) yang diberi pakan komersil dan nanokalsium yang berasal dari cangkang tiram (Crassostrea gigas)

DEPIK ◽  
2018 ◽  
Vol 7 (1) ◽  
pp. 42-46
Author(s):  
Lia Handayani ◽  
Faisal Syahputra
Keyword(s):  
Growth Rate ◽  
Solid Waste ◽  
Crassostrea Gigas ◽  
Oyster Shell ◽  
Cherax Quadricarinatus ◽  
Calcium Supplements ◽  
Calcium Addition ◽  
Calcium Source ◽  
Survival And Growth ◽  
Effect On Growth

Oyster shell can be used as alternative calcium source. Utilizing of oyster shell into nano calcium flour can be used to decrease solid waste. The usage of nano calcium flour in feed is important applied as calcium supplements with cherax quadricarinatus. The purpose of this research is to study the effect of nano calcium addition on feeds to increase moulting frequency, survival and growth rate of freshwater lobster. This research has been done during 60 days in fisheries Laboratory, Abulyatama University. Two percents nano calcium addition on feeds gives significant effect on growth rate and very significant effect to moulting frequency of freshwater lobster. Which has moulting frequency 2.71. Where the treatment was not added nano calcium has moulted frequency 1.29. But, nano calcium addition on foods did not affect survival rate.Cangkang tiram dapat digunakan sebagai alternatif sumber kalsium. Pemanfaatan cangkang tiram menjadi serbuk nanokalsium dapat mengurangi limbah padat. Penggunaan serbuk nanokalsium pada pakan penting dilakukan sebagai suplemen kalsium untuk lobster air tawar. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan nanokalsium pada pakan terhadap pertumbuhan, frekuensi molting dan kelangsungan hidup Lobster Air Tawar (LAT). Penelitian ini dilakukan selama 60 hari di laboratorium perikanan, Universitas Abulyatama. Data dianalisa menggunakan uji T (perbandingan) antara lobster yang diberi pakan nanokalsium dan tanpa penambahan nanokalsium. Nanokalsium yang ditambahkan ke dalam pakan sebanyak 2% berpengaruh nyata terhadap pertumbuhan lobster air tawar (thitung ttabel), dan berpengaruh sangat nyata terhadap jumlah molting dengan frekuensi molting 2,71 kali/ekor terhadap lobster yang diberi pakan nano CaO, sedangkan yang diberi pakan komersil hanya 1,29 kali/ekor. Namun, tidak berpengaruh terhadap tingkat kelangsungan hidup (thitung ttabel).

scholarly journals Pakan Melayang (Bouyancy Feed) Pengganti Egg Custard Untuk Meningkatkan Keseragaman Ukuran Dan Survival Rate Larva Udang Galah (Macrobrachium rosenbergii de Man)

2015 ◽  
Vol 1 (1) ◽  
pp. 51
Author(s):  
Satria Satria ◽  
Rice Novrizah
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Vitamin C ◽  
Consumption Rate ◽  
Macrobrachium Rosenbergii ◽  
Freshwater Prawn ◽  
Giant Freshwater Prawn ◽  
Size Growth ◽  
Biological Aspects ◽  
De Man

Wacana pakan bouyancy pada pemeliharaan larva udang galah muncul karena dugaan untuk meratakan keberadaan pakan di kolom air dan memudahkan larva dalam menangkap pakan sehingga meningkatkan keseragaman ukuran larva pada D10 keatas, menekan laju kanibalisme, mempercepat grow rate dan meningkatkan survival rate. Percobaan ini dilakukan di bak di dalam hapa mini berukuran 100x100x50 cm selama 30 hari; menggunakan larva udang galah D7. Kepadatan tebar 200-300 ekor/L. Pakan bouyancy diberikan 3 kali/hari dengan takaran antara 10-30% bobot biomassa. Percobaan diulang 2 kali. Kajian pemberian pakan bouyancy dilakukan menggunakan bahan pakan berupa susu 150 gr, terigu 150 gr, telur 8 butir, minyak cumi 10 gr, cumi-cumi 150 gr, yeast 5 gr vit C 0,5 gr dan pewarna makanan. Untuk mengoptimalkan daya apung ekstrusi pakan dilakukan secara sederhana dengan menggunakan mixer dan reaksi dari yeast dan gula menghasilkan gas ke pori-pori pakan. Beberapa parameter yang diamati sebagai bahan konsiderasi dari aspek biologis antara lain daya apung pakan, keseragaman ukuran larva, laju pertumbuhan, umur larva, survival rate dan laju konsumsi. Dari hasil percobaan diperoleh daya apung pakan dikolom air bertahan paling lama satu jam. Keseragaman ukuran larva pada D10 keatas sebesar 70%, laju pertumbuhan tercepat diperoleh pada D14 dengan ukuran 10 mm (7%), umur larva yang tercepat masuk stadia Post Larva terjadi pada stadia D20 (5%) dan survival rate sebesar 40% yang dihasilkan selama masa pemeliharaan. Kata Kunci: Larva Udang Galah, Pakan Bouyancy dan Ekstrusi The discourse of bouyancy feed in the breeding of giant freshwater prawn larva appears to distribute evenly the feed in the water column and to ease the larva in catching the feed to improve uniformity of larva size from D10 to up, pressing its cannibalism, improving its grow rate and survival rate. This research was conducted in fairish micronet 100x100x50 cm for 30 days; using Larva Giant freshwater prawn larva (D7). The density of disperse was 200-300 larva/L. Bouyancy feed was given 3 times/day by measuring around 10-30% weight of biomass. It was repeated 2 times. Bouyancy feed was made of several materials, they are: 150 gr of milk, 150 gr of wheat, 8 pieces of egg, 10 ml of Squid oil, 150 gr Squid, 5 gr yeast, 0,5 gr of Vitamin C and food coloured. To optimize the exstrution of feed, it is conducted simply by using mixer and reaction of sugar and yeast yielded gas to pore the feed. Some parameters observed as biological aspects such as buoyancy feed, uniformity of larva size growth rate, age of larva, survival rate and consumption rate. The result showed that the buoyancy feed could survive for one hour. The uniformity of larva size at D10 to up was gained about 70%, the fastest growth rate was obtained at D14 at the size of 10 mm ( 7%), the fastest larvea age entering Post Larva stage occurred at stage D20 ( 5%). Survival rate gained during the treatment was 40%. Keywords: Giant freshwater prawn larva, bouyancy feed and ekstrution

scholarly journals Comparison of the Growth Potential of Macrobrachium rosenbergii in Mono and Polyculture Conditions in Earthen Culture Ponds of Jammu, India

2019 ◽  
Vol 19 (3&4) ◽  
pp. 112
Author(s):  
Sanjeev Kumar Karlopia ◽  
Yahya Bakhtiyar ◽  
Seema Langer
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Macrobrachium Rosenbergii ◽  
Growth Potential ◽  
Growth And Survival ◽  
Indian Major Carps ◽  
Freshwater Ponds ◽  
Mean Size ◽  
Average Size ◽  
Major Carps

The study was conducted to assess the growth and survival of <em>Macrobrachium rosenbergii</em> in earthen culture ponds in order to know about the growth potential of <em>M. rosenbergii</em> in mono as well as polyculture conditions in Jammu. Polyculture experiments of prawn with some selected carps Indian Major Carps (<em>Cirrhinus mrigala</em> and <em>Labeo rohita</em>) and Exotic Carps (<em>Cyprinus carpio</em>) were undertaken in 3 freshwater ponds for duration of 4 months. Under the monoculture conditions, prawns attained an average size of 10.40 ± 0.17 cm weighing 23.84 ± 0.32 g in 4 months and the survival rate was found to be more than 75%. The growth rate of prawns was found to increase steadily during the first half (upto mid-October) after which a decline in the growth rate was evident as the mean temperature reached below 18°C. In the polyculture ponds the prawns attained an average size of 10.10 ± 0.03 cm weighing 18.39 ± 0.89g (without<em> C. carpio</em>) and 8.4 ± 0.36 cm weighing 15.23 ± 0.36 g (with <em>C. carpio</em>) in 4 months and their survival rate was less than 70%. Prawns being benthic feeders utilized the leftover food (of the fishes) that settled at the bottom, therefore, saving the feed cost. It was observed that mean size of the fish attained in the polyculture practice was almost similar to that obtained in the monoculture. The ideal prawn polyculture should be practiced with fast growing compatible carps such as Rohu and grass carp. Bottom feeder carps such as Mrigal (<em>C. mrigala</em>) should be avoided in prawn polyculture practice as they compete with prawns in feeding.

scholarly journals Effect of periodic fasting on growth and feed efficiency in Giant Freshwater Prawn (Macrobrachium rosenbergii, de Man 1879)

2019 ◽  
Vol 2 (2) ◽  
pp. 53
Author(s):  
Waskito Dwi Utomo ◽  
Riza Rahman Hakim ◽  
Ganjar Adhywirawan Sutarjo
Keyword(s):  
Growth Rate ◽  
Feed Efficiency ◽  
Macrobrachium Rosenbergii ◽  
Freshwater Prawn ◽  
High Price ◽  
Daily Growth Rate ◽  
Daily Growth ◽  
Absolute Weight ◽  
Weight Growth ◽  
De Man

There are obstacles in the aquaculture business that is still often facedbyfarmers, one of the challengesisthe high price of commercial feed. Feed as an energy source for growth is a reasonably high-cost component in production that reaches 40-89 %. In the control of food for efficiency, it could be done by the fasting method. This research was aimedtoanalyze the effect of periodic fastedofgiant prawn (Macrobrachium rosenbergii de Man, 1879) against growth and feed efficiency. This research was conducted at IBAP Installation, Probolinggo District - East Java Province. The experimental method used completely randomized design with five treatments and three replications, such as; P0: feeding without fasting (as control), P1: a-day fasted, a-day feeding, P2: a-day fasted, two-days feeding, P3: a-day fasted, three-day feeding, P4: a-day fasted, four-days feeding, P5: a-day fasted, five-day feeding. The results showed that periodic fasted of M. rosenbergii no significant effect on the daily growth rate, absolute weight growth, and feed efficiency. However, by looking at the rate of growth, thisfasting methodcouldbe used as an alternative to saving feed. The P5 showed the most effective in increasing daily growth rate, absolute weight growth, and effectiveness of giant prawn feeding. The strategy of periodic fasted to increase the production of giant prawns should consider the other supporting factors such as ideal water quality (pH, temperature, and DO), proper stocking density, and feeding periods on schedule.

scholarly journals Study of the growth and survival parameters of Macrobrachium rosenbergii shrimp depending on the type of feed used

2021 ◽  
Vol 273 ◽  
pp. 03008
Author(s):  
Evgeny Tikhonov ◽  
Valentin Bazykin ◽  
Igor Grigorev ◽  
Sergey Solovyov ◽  
Elena Radkevich
Keyword(s):  
Water Quality ◽  
Fatty Acids ◽  
Growth Rate ◽  
Survival Rate ◽  
Suspended Solids ◽  
Daphnia Pulex ◽  
Macrobrachium Rosenbergii ◽  
Implementation Plan ◽  
Growth And Survival ◽  
Study Implementation

The aim of the study is to determine the effect of the feed type (Daphnia pulex-based feed and Dajana nano gran brand) on the water quality (presence of microorganisms and suspended solids) and on the growth and survival of Macrobrachium rosenbergii shrimp larvae. The study implementation plan involved 4 groups of shrimps placed under the same conditions, which were evaluated for 14 weeks through periodic observations and biometrics. The data obtained recorded significant differences between the groups where the best growth and survival results were obtained in organisms that received Dajana nano gran feed, regardless of water quality. In addition, the values of protein in shrimp meat up to 45% and different amounts of fatty acids were obtained. It was determined that the Daphnia pulex-based feed showed lower results in the growth rate and survival rate of Macrobrachium rosenbergii shrimp.

Quantitative genetic parameters for body traits at different ages in a cultured stock of giant freshwater prawn (Macrobrachium rosenbergii) selected for fast growth

2014 ◽  
Vol 65 (3) ◽  
pp. 198 ◽  
Author(s):  
Dinh Hung ◽  
Nguyen Hong Nguyen ◽  
David A. Hurwood ◽  
Peter B. Mather
Keyword(s):  
Growth Rate ◽  
Genetic Correlations ◽  
Macrobrachium Rosenbergii ◽  
High Growth ◽  
High Growth Rate ◽  
Fast Growth ◽  
Freshwater Prawn ◽  
Giant Freshwater Prawn ◽  
Different Ages ◽  
Variance And Covariance Components

The aim of the current study was to estimate heritabilities and correlations for body traits at different ages (Weeks 10 and 18 after stocking) in a giant freshwater prawn (Macrobrachium rosenbergii) population selected for fast growth rate in Vietnam. The dataset consisted of 4650 body records (2432 and 2218 records collected at Weeks 10 and 18, respectively) in the full pedigree comprising a total of 18 387 records. Variance and covariance components were estimated using restricted maximum likelihood fitting a multi-trait animal model. Estimates of heritability for body traits (bodyweight, body length, cephalothorax length, abdominal length, cephalothorax width and abdominal width) were moderate and ranged from 0.06 to 0.11 and from 0.11 to 0.22 at Weeks 10 and 18, respectively. Body-trait heritabilities estimated at Week 10 were not significantly lower than at Week 18. Genetic correlations between body traits within age and genetic correlations for body traits between ages were generally high. Our results suggested that selection for high growth rate in GFP can be undertaken successfully before full market size has been reached.

scholarly journals Reproductive and growth performances in female giant freshwater prawn following inhibition of gonadal maturation using dopamine and medroxyprogesterone hormone

2020 ◽  
Vol 19 (1) ◽  
pp. 10-18
Author(s):  
Megawati Wijaya ◽  
Agus Oman Sudrajat ◽  
Imron
Keyword(s):  
Growth Rate ◽  
Gonad Development ◽  
Macrobrachium Rosenbergii ◽  
Somatic Growth ◽  
Freshwater Prawn ◽  
Economic Losses ◽  
Mature Stage ◽  
Gonadal Maturation ◽  
Giant Freshwater Prawn ◽  
Gonadal Maturity

ABSTRACT One of the main problem in giant river prawn (GFP) culture is early gonadal maturation in female resulting a reduced growth performance. This problem cause economic losses. When GFP at gonadal maturation, somatic growth will be inhibited because energy is used for reproduction. A factorial experimental design using two factors, namely dopamine and medroxyprogesterone, with each factor consist of three levels was applied. Three dopamine levels were 0, 10-5 mol/shrimp, and 10-10 mol/shrimp, while the medroxyprogesterone levels were 0, 75 mg/1.5 mL/bodyweight, and 150 mg/3 mL/bodyweight with a density 15 individual/tank. The utilization of dopamine and medroxyprogesterone in GFP (initial bodyweight : 11.27 ± 0.97 g) through injection at the third periopod was done three times at week 0, 2nd, and 4th with two weeks interval. The results showed that hormone inhibitor treatments affected both growth and reproductive performances in female GFP. The treated individuals showed a lower gonadal maturity indicator values and faster growth rate than control. Gonadal maturity, as shown by gonad histology, in all treatments were lower (previtelogenic and vitellogenic stages) than that in control which is in mature stage. Estradiol concentration premix dopamine 10-10 mol/shrimp and medroxyprogesterone 150 mg/3 mL/bodyweight treatments are lower than control. In conclusion, dopamine and medroxyprogesterone administration could suppres GSI and gonad development, and also increase growth rate. Keywords: Macrobrachium rosenbergii, dopamine, medroxyprogesterone, gonad development, growth.

scholarly journals Pengaruh ablasi mata terhadap kecepatan kematangan gonad kepiting bakau (Sylla serrata) betina

2014 ◽  
Vol 1 (1) ◽  
pp. 14
Author(s):  
Muhammad Robi ◽  
Erlangga Erlangga
Keyword(s):  
Survival Rate ◽  
Economic Value ◽  
Gonadal Development ◽  
Scylla Serrata ◽  
Mud Crab ◽  
Average Value ◽  
Gonadal Maturity ◽  
Mangrove Crab ◽  
Randomized Design ◽  
Completely Randomized Design

Kepiting bakau (Scylla serrata) merupakan jenis golongan Crustaceae   yang mengandung protein hewani yang cukup tinggi dan memiliki nilai ekonomis yang tinggi. Ablasi mata merupakan salah satu cara untuk menghilangkan hambatan perkembangan telur (gonad) pada kepiting bakau. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap (RAL) non factorial dengan 4 perlakuan dan 3 ulangan. Adapun perlakuan dalam penelitian ini adalah perlakuan A (ablasi satu pasang mata), perlakuan B (ablasi mata kiri), C (ablasi mata kanan), D (tanpa ablasi).   Hasil penelitian menunjukkan bahwa kecepatan kematangan gonad tertinggi pada perlakuan C (ablasi mata kanan) yaitu pertumbuhan gonad mencapai 21,53% dan terendah terjadi  D (tanpa ablasi)  pertumbuhan gonad hanya 14,8%. Analisa statistik dengan uji F menunjukan bahwa ablasi mata berpengaruh terhadap kecepatan kematangan gonad kepiting bakau. Pertambahan bobot tertinggi  terdapat pada perlakuan C (ablasi mata kanan) yaitu sebesar 2,67 gr kemudian disusul oleh D (tanpa ablasi)  sebesar 1,89 gr  dan terakhir  pada B (ablasi mata kiri) dengan nilai rata-rata sebesar 0,77 gr. Tingkat kelangsungan hidup terbaik terdapat pada perlakuan D (tanpa ablasi)   yaitu 100%, perlakuan B (ablasi mata kiri) 77,77%, perlakuan C (ablasi mata kanan) 66,66% dan kelansungan hidup terendah terjadi pada perlakuan A (ablasi satu pasang mata) 0%. Rata-rata kualitas air selama penelitian adalah suhu 27 0C dan Ph 7,65.Mangrove crab (Scylla serrata) have been classifying in Crustaceae clas that containing high animal protein and high economic value. Ablation of the eye is an solution to eliminate the egg development (gonads) barriers in the mangrove crab. The research design used a completely randomized design (CRD) non- factorial with 4 treatments and 3 replications. Treatment in this study were the treatment of A (ablation of the pairs of eyes), treatment B (left eye ablation), treatment C (right eye ablation), D (without ablation). The results showed that the highest rate of gonadal maturation was in treatment C (right eye ablation) where gonadal development growth reached 21.53 %, whereas the lowest was in treatment D (without ablation) where gonadal development growth was only 14.8 %. Statistical analysis by F test showed that ablation of the eye was affected the mud crab gonadal maturity. The Weight gain was found highest in the treatment C (right eye ablation) that reached 2.67 g and followed by treatment D (without ablation) 1.89 grams and the last in the treatment B (left eye ablation) with was an average value 0.77 grams. The higest survival rate was found in treatment D (without ablation) 100 %, treatment B (left eye ablation) 77.77 %, treatment C (right eye ablation) 66.66 % and the lowest survival rate was occurred in treatment A (ablation of the pairs of eyes) 0 %. The avarge values of water quality during the study showed that the temperature was reched 27 0C and pH was 7, 65.

scholarly journals Farming of giant freshwater prawn (Macrobrachium rosenbergii) in Bagerhat, Bangladesh

2014 ◽  
Vol 2 (3) ◽  
pp. 187
Author(s):  
Shirin Akter ◽  
Md. Mer Mosharraf Hossain ◽  
Sanjoy Banerjee Bappa ◽  
Bipul Kumar Dey ◽  
Md. Farid Uz Zaman
Keyword(s):  
Survival Rate ◽  
Present Status ◽  
Macrobrachium Rosenbergii ◽  
Stocking Density ◽  
Appropriate Technology ◽  
Freshwater Prawn ◽  
Intensive Culture ◽  
Giant Freshwater Prawn ◽  
Extension Work ◽  
Education Levels

The study was carried out to know the present status of Macrobrachium rosenbergii culture in Bagerhat district, Bangladesh from March 2012 to January 2013. Education levels  of farmers were found as illiterate (12.3%), primary (36.19%), secondary (20%), SSC (13.33%), HSC (12.38%) and graduate (5.71%). M. rosenbergii culture was the primary and secondary occupation of 80% and 20% farmers respectively. Average stocking density and production in extensive, improved extensive and semi-intensive culture were 9609, 11502 and 22847 per ha and 193, 284 and 488 kg/ha/year respectively; rearing period ranges from 6-10 months and survival rate varied from 55 to 60%. In improved extensive and semi-intensive culture 82.86% and 71.43% farmers applied farm-made feed instead of company feeds respectively and 11.43% and 37.14% farmers used both feeds. 91.43%, 80% and 68.57% respondents responded on normal to high mortality in extensive, improved extensive and semi-intensive culture respectively. Lack of finance and appropriate technology, scarcity of quality PL, diseases and inadequate extension work were major problems of prawn culture.

scholarly journals PERTUMBUHAN KEPITING BAKAU Scylla olivacea DENGAN RASIO JANTAN-BETINA BERBEDA YANG DIPELIHARA PADA KAWASAN MANGROVE

2016 ◽  
Vol 18 (1) ◽  
pp. 1
Author(s):  
Muhammad Yusri Karim ◽  
Hasni Y. Azis ◽  
Muslimin Muslimin
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Mud Crab ◽  
Daily Growth Rate ◽  
Daily Growth ◽  
Male And Female ◽  
Randomized Design ◽  
Trash Fish ◽  
Absolute Growth ◽  
Length Width

Mudcrab fattening is potential to develop in mangrove areas. The aim of the present study was to determine the best ratio of male and female in fattening of mud crab in the mangrove area. Research was conducted in the mangrove areas of Pangkep Regency, South Sulawesi Province. Test animals used were mud crab S. olivacea male and female measuring weight of 250 ± 10 g and were stocked at a density of 10 animals/cage. The bamboo cages measuring length, width, and height of 1.0 x 1.0 x 1.0 m3 were placed in the mangrove areas. Feed used was trash fish at 10% of the biomass with the feeding frequency of two times a day ie morning (30%) and afternoon (70%). The study used a completely randomized design (CRD) consisting of 4 treatments and 3 replications. The ratio of male and female crabs were 7:3; 6:4; 5:5; 4:6 and 3:7 crabs/cage, respectively. Results of analysis of variance showed that the treatment with the different ratio of male and female was not significant (p> 0.05) on the survival rate of crab, but was highly significant (p <0.01) on the absolute and daily growth rate. The resulting survival rate ranges from 93.33 to 100%, absolute growth and the highest daily growth rate of crabs produced at a ratio of males and females (7:3) and (6:4) crabs/cage ie: 56.99 and 1.35; 56.25 g and 1.36%/day, while the lowest was in the ratio (3:7) crabs/cage ie: 28.97 g and 0.73%/day. 

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