Rochmady
Coastal And Isle Research Group, College Of Wuna Agriculture, Raha Pusat Studi Pesisir Dan Pulau-Pulau Kecil, Sekolah Tinggi Pertanian Wuna, Jl. Letjend. Gatot Subroto Km.7 Lasalepa Raha 93654

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Analisis parameter oseanografi melalui pendekatan sistem informasi manajemen berbasis web (Sebaran suhu permukaan laut, klorofil-a dan tinggi permukaan laut) Rochmady Rochmady
Agrikan: Jurnal Agribisnis Perikanan Vol 8, No 1 (2015)
Publisher : Sangia Research Media and Publishing LLC

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.agrikan.8.1.1-7

Abstract

Penelitian dilakukan bertujuan untuk menganalisis anomali parameter oseanografi yang meliputi suhu permukaan laut (SPL), sebaran klorofil-a dan tinggi permukaan laut selama musim timur (April-Juni 2007) dan musim barat (Nopember 2007-Januari 2008) di perairan Selat Buton sebagian Laut Banda dengan posisi geografis 120o-125oBT dan 1o-8oLS. Hasil penelitian menunjukkan bahwa berdasarkan peta suhu permukaan laut (SPL) pada musim timur terjadi penurunan derajat suhu permukaan laut dari bulan April menuju bulan Juni. Penurunan derajat SPL pada bulan Juni tersebut diduga mengakibatkan terjadinya upwelling. Namun demikian, peristiwa upwelling tersebut tidak terjadi pada musim barat. Berdasarkan peta sebaran khlorofil-a terlihat bahwa konsentrasi khlorofil-a semakin meningkat dari bulan April hingga menuju bulan Juni 2007. Hal ini mengindikasikan terjadinya peristiwa upwelling pada musim timur. Sementara itu, berdasarkan peta sebaran tinggi permukaan laut (TML) terlihat bahwa karakteristik tahunan tinggi permukaan laut mengalami penurunan pada musim timur dan sebaliknya mengalami peningkatan pada musim barat. Berdasarkan ketiga parameter oseanografi tersebut diketahui bahwa potensi penangkapan ikan terjadi pada musim timur dan berangsur-angsur menurun pada musim barat. Hal ini disebabkan terjadinya penurunan derajat SPL dan konsentrasi khlorofil-a serta menurunnya tinggi permukaan laut pada musim timur yang kaya akan nutrien dan berangsur-angsur mengalami penurunan pada musim barat.
Nisbah kelamin dan ukuran pertama matang gonad kerang lumpur (Anodontia edentula, Linnaeus 1758) di pesisir Lambiku, Kecamatan Napabalano Kabupaten Muna Rochmady Rochmady; Sharifuddin Bin Andy Omar; Lodewyck S Tandipayuk
Agrikan: Jurnal Agribisnis Perikanan Vol 6, No 1 (2013)
Publisher : Sangia Research Media and Publishing LLC

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.agrikan.6.1.1-9

Abstract

Penelitian dilakukan di pesisir Lambiku dengan tujuan untuk menganalisis nisbah kelamin dan ukuran pertama matang gonad kerang lumpur. Data dianalisis untuk mengetahui nisbah kelamin dan ukuran pertama matang gonad kerang lumpur Pulau Tobea dengan menggunakan analisis chisquare (χ2) dan Metode Spearmen-Karber (Udupa, 1986). Hasil analisis nisbah kelamin dengan menggunakan chi-square berdasarkan stasiun pengambilan sampel, waktu pengambilan dan tingkat kematangan gonad (TKG) menunjukkan nisbah kelamin jantan kerang lumpur cenderung sebanding dengan jenis kelamin betina. Hal ini ditunjukkan dengan nilai chi-square hitung=chi-square tabel baik berdasarkan waktu pengambilan sampel (0,6770), berdasarkan tingkat kematangan gonad (TKG) (2,7462), berdasarkan stasiun pengamatan (3,3673). Ukuran pertama matang gonad kerang lumpur, jenis kelamin jantan mencapai ukuran rata-rata panjang cangkang sebesar 55,03 mm, pada kisaran panjang cangkang sebesar 54,47-55,60 mm. Untuk jenis kelamin betina mencapai ukuran pertama matang gonad dengan rata-rata panjang cangkang sebesar 54,93 mm, pada kisaran panjang cangkang sebesar 54,48-55,38 mm. Kerang lumpur di pesisir Lambiku, ukuran pertama matang gonad sebenarnya untuk jenis kelamin jantan mencapai ukuran panjang cangkang sebesar 50,2 mm dan jenis kelamin betina mencapai ukuran panjang cangkang sebesar 51,0 mm.
The level of viability of milkfish (Chanos chanos) in transportation containers with different temperatures Fendi; Sarfiani; Karyawati; Rochmady; Abdul Rakhfid
Akuatikisle: Jurnal Akuakultur, Pesisir dan Pulau-Pulau Kecil Vol 2, No 2 (2018)
Publisher : Sekolah Tinggi Ilmu Pertanian Wuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.akuatikisle.2.2.61-65

Abstract

The transportation of milkfish (Chanos chanos) is an important factor determining the survival of milkfish (Chanos chanos). The hatchery is not always close to the location of the aquaculture pond, so the treatment in transportation using land and sea vehicles to arrive at the aquaculture site/pond. This study aims to determine the effect of different temperatures in milkfish (Chanos chanos) transportation to obtain a good temperature in milkfish (Chanos chanos) transportation. The research method uses a completely randomized design (CRD) with three treatments and three replications. The treatments given were treatment A (temperature 15oC), treatment B (temperature 18oC), and treatment C (temperature 21oC). While the time taken for each treatment is 14 hours. The results showed that the survival of milkfish (Chanos chanos) were in the range of 90.04% (treatment A), 95.04% (treatment B), and 88.67% (treatment C), where the highest survival in treatment B is 95.04%.
Probiotic aplication for growth and survival rate of vaname shrimp Litopenaeus vannamei with different density Abdul Rakhfid; Wa Ode Halida; Rochmady; Fendi
Akuatikisle: Jurnal Akuakultur, Pesisir dan Pulau-Pulau Kecil Vol 2, No 2 (2018)
Publisher : Sekolah Tinggi Ilmu Pertanian Wuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.akuatikisle.2.2.41-48

Abstract

The study aimed to determine the growth and survival of Litopenaeus vannamei shrimp with the application of probiotics to different stocking densities.  The study was conducted from May to June 2018 at the Balai Benih Ikan Pantai (BBIP) Ghonebalano, Duruka District, Muna Regency, using a Completely Randomized Design (CRD) with three levels of solid stocking treatment namely treatment A is 18 individu per container, treatment B is 24  individu per container and treatment C is 30  individu per container with three replications.  Data analysis using Variance Analysis (ANOVA) at the confidence level of 95% (α 0.05).  The results showed that the highest daily growth was obtained at 24 individual densities of 5.88% per day, compared to 18 individual densities of 5.86% per day and 30 individual densities of 5.74% per day.  The highest absolute growth is obtained at 24 individual density of 2.43 g per individu, then 18 individual density of 2.15 g per individual, and the lowest at 30 individual density of 2.02 g per individual.  Survival at a density of 18 individual and a density of 24 individual at 88.89%, while a 30-ind density of 86.67%.  Analysis of variance (α 0.05) showed that the application of probiotics to different stocking densities had no significant effect on the daily growth rate of vannamei shrimp (p<0.939), absolute growth of vannamei shrimp (p<0.080), and survival of vannamei shrimp (p<0.744).
Pengaruh pemberian pupuk anorganik (NPK+Silikat) dengan dosis berbeda terhadap kepadatan Skeletonema costatum pada pembenihan udang windu Fitriani; Fendi; Rochmady
Akuatikisle: Jurnal Akuakultur, Pesisir dan Pulau-Pulau Kecil Vol 1, No 1 (2017)
Publisher : Sekolah Tinggi Ilmu Pertanian Wuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.akuatikisle.1.1.11-18

Abstract

Skeletonema costatum one type of phytoplankton commonly cultivated in the shrimp hatchery (Penaeus monodon Fabr.). Plankton S. costatum has a high nutrient content, small size is used as a natural feed of tiger shrimp larvae, especially in the zoea to mysis stadia. The aim of this research is to know the effect of inorganic fertilizer (NPK+Silicate) with dosage of 5 ppm, 15 ppm and 20 ppm to the density of S. costatum on tiger shrimp. The study was conducted for 2 weeks in July 2011 at UPTD Balai Benih Ikan Pantai Muna, Ghonebalano village, Duruka district, Muna regency, Southeast Sulawesi. The experiment used a 3-liter volume on stoples, a salinity water of 20 ppm. The study used Completely Randomized Design (RAL) with NPK and Silicate treated fertilizer with 5 ppm, 10 ppm (control), 15 ppm and 20 ppm with 3 replications. The initial density of S. costatum was 10,000 cells mL-1 per unit. The data were analyzed by ANOVA using IBM SPSS Statistic 22. The results showed that inorganic fertilizer application (NPK+Silicate) with different dose gave a very real effect on the density of S. costatum cells. Treatment of 15 ppm fertilizer dosage was significantly different with control and other treatment, average cell density was 121,000 cells mL-1. Based on cell growth, the 15 ppm fertilizer dosage has the best growth with an average cell increase of 1,2705 cells mL-1 day-1.
The growth of seaweed (Eucheuma cottoni) at different fertilizing doses in the waters of the village of Ghonebalano, Duruka District, Muna Regency, Indonesia Fendi; La Lili; Abdul Rakhfid; Rochmady
Akuatikisle: Jurnal Akuakultur, Pesisir dan Pulau-Pulau Kecil Vol 3, No 1 (2019)
Publisher : Sekolah Tinggi Ilmu Pertanian Wuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.akuatikisle.3.1.17-22

Abstract

The study was conducted aiming to test different fertilizer doses on the optimal growth rate of Eucheuma cottonii seaweed. The study was conducted from July to August 2016 in the waters of Ghonebalano Village, Duruka District, Muna Regency, Southeast Sulawesi. The study used NPK fertilizer with the composition of the element nitrogen (N) 15%, phosphate (P2O5) 15%, and potassium (K2O) 15%. The study used a Randomized Block Design (RBD) with 3 (three) levels of fertilizer doses and 3 (three) groups so that the number of experimental units was 9 (nine) units. While the treatments tested in the study were treatment A (without fertilizer/control), treatment B (fertilizer dose 1 g/L), and treatment C (fertilizer dose 2 g/L). The results showed that the difference in fertilizer dose significantly affected the growth rate of Eucheuma cottonii seaweed. A dosage of 2 g/L of fertilizer gives the best rate of growth of Eucheuma cottonii seaweed while the water quality at the study site shows that it is still in the optimal range for the growth of Eucheuma cottonii seaweed.
Pengaruh pemupukan dan padat penebaran terhadap tingkat kelangsungan hidup dan pertumbuhan post larva udang vaname (Litopenaues vannamei) Ernawati; Rochmady
Akuatikisle: Jurnal Akuakultur, Pesisir dan Pulau-Pulau Kecil Vol 1, No 1 (2017)
Publisher : Sekolah Tinggi Ilmu Pertanian Wuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.akuatikisle.1.1.1-10

Abstract

The aim of this research is to know the effect of fertilization and density on survival rate and the absolute growth of post-larvae of shrimp vanname (Litopenaeus vannamei). The study was conducted from 18 August to 5 September 2013 at Oensuli ponds, Kabangka, Muna Regency, Indonesia. The research used animal test of vaname shrimp stadium PL6, a fertilizer of Urea and TSP. The study used styrofoam container, 75 cm long, 37 cm wide, and 27 cm high. Research using Factorial RAL, fertilization and density used three levels, three replications, so that the experiment of 27 units. The fertilizer treatment consisted of no-fertilizer (Control), combination Urea 0.5 g/TSP 0.7 g (P2), combination Urea 0.7 g/TSP 0.9 g (P3). The density treatment consists of density 9 ind/container (Control), density 14 ind/container (KP2) and density 19 ind/container (KP3). Parameters observed survival rate (SR) and absolute growth (G). Data analysis using ANOVA (a0,05) with IBM SPSS Statistic 22. The results showed that fertilization and stocking density had a significant effect on survival and post larvae growth of vaname shrimp. The optimum use of 0.7 g/TSP 0.9 g urea per container. The optimum fertilizer composition of growth was Urea 0.5 g/TSP 0.7 g per container. The best survival rate through a combination of Urea 0.7 g/TSP 0.9 g, density 9 ind per container, equivalent Urea 26 kg/TSP 33 kg density 333.000 ind per ha. The best growth through a combination of Urea 0.5 g/TSP 0.7 g, density 9 ind per container or Urea 19 kg/TSP 26 kg, density 333.000 ind per ha.
Survival rate and growth of juvenile vannamei shrimp (Litopenaeus vannamei) in different media water salinity Abdul Rakhfid; Erna; Rochmady; Fendi; Muhammad Zayani Ihu; Karyawati
Akuatikisle: Jurnal Akuakultur, Pesisir dan Pulau-Pulau Kecil Vol 3, No 1 (2019)
Publisher : Sekolah Tinggi Ilmu Pertanian Wuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.akuatikisle.3.1.23-29

Abstract

Shrimp commodities in Indonesia have been cultivated, either traditionally, traditionally plus, semi intensive, or intensively. One type of shrimp that is constantly strived to increase its production is the shrimp vaname (Litopenaneus vannamei). The environmental conditions of pond waters are closely related to pond water quality. One of the water quality parameters affecting the survival and growth of vaname shrimp is salinity. The study was conducted from May to June 2018 at the Fish Seed Hall (BBIP) Ghonebalano, Ghonebalano Village, Duruka District, Muna Regency. This study aims to determine the effect of water salinity on different media on the survival and growth of vaname shrimp. The study used a Completely Randomized Design with four treatments and three replications. Treatment A salinity 20 ppt, B treatment salinity 25 ppt, C treatment salinity 30 ppt and treatment D salinity 35 ppt. The results showed that the treatment had significant effect on the survival of the animals in the 95% confidence level where the survival in sequence, the treatment of A 87.50%, the treatment of B 83.33%, the C treatment 80.56% and the treatment D 69.44% . The treatment also had a significant effect on the growth of test animal at 95% confidence level. Successive growth was, treatment A 2.01 g, treatment B 1.91 g, treatment C 1,71 g and treatment D 1.51 g.
Growth and survival of post larvae of tiger shrimp (Penaeus monodon Fabr.) through the administration of probiotics with different doses Ali Usman; Rochmady
Akuatikisle: Jurnal Akuakultur, Pesisir dan Pulau-Pulau Kecil Vol 1, No 1 (2017)
Publisher : Sekolah Tinggi Ilmu Pertanian Wuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.akuatikisle.1.1.19-26

Abstract

One of the factors that affect the growth of tiger shrimp is the quality of feed. Nutrient content in feed such as protein, carbohydrate and fat, generally used as a parameter of feed quality. Feed consumed by shrimp is not all digested, one of which depends on the enzymatic ability of the shrimp digestive tract. The use of probiotic bacteria in addition to having the ability to reduce colonies, inhibit the growth of pathogenic bacteria, and neutralize water quality, probiotic bacteria can help digestibility of the intestine. The aim of this research is to know the growth and survival of post larvae of shrimp (Penaeus monodon Fabr.) Through the provision of probiotics with different doses. The research was conducted at Balai Fish Fishing Hall of Muna Regency, Southeast Sulawesi, Indonesia. Post larva shrimp tiger (PL-20) of 120 tails, maintained for 28 days. The tested treatment was probiotic dose 5 ml (treatment A), dose 10 ml treatment B), dose 15 ml (treatment C), and without probiotics (control). Probiotics are given every 7 days on water maintenance media using a pipette (0.5-20 ml scale). Weighing results showed relatively high post-larva shrimp larvae growth of 400.00% (treatment B); 291.67% (treatment C); of 233.33% (treatment A) and equal to 58.33% (Control). Variation analysis result showed that giving of probiotic with different dose gave real effect (P<0,01) to relative growth of postlarva prawn weights (P. monodon Fabr.). Provision of probiotics has no significant effect on postlarva tiger prawn survival rate (P. monodon Fabr.). The survival rate of post larvae of tiger shrimp during the study was in the range 66.67-83.33%.
The use of probiotic for growth and survival of milkfish (Chanos chanos Forskal) Abdul Rakhfid; Wa Ode Nanny Kulsum; Fendi; Mosriula; Muhammad Bakri; Karyawati; Alimin; Rochmady
Akuatikisle: Jurnal Akuakultur, Pesisir dan Pulau-Pulau Kecil Vol 4, No 2 (2020)
Publisher : Sekolah Tinggi Ilmu Pertanian Wuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.akuatikisle.4.2.83-89

Abstract

Milkfish cultivation in Muna Regency has not yet developed optimally, allegedly due to poor water circulation. Internal solution that can be done is the use of probiotics in water maintenance media. The aim of this study was to determine the effect of adding proiotics to media water with different doses on the growth and survival of milkfish (Chanos chanos Forskal), carried out in May to June 2019 at the Gonangkalo Beach Fish Seed Center (BBIP), Gonebalano, Duruka District, Muna Regency. The study used a complete randomized design (CRD) with three probiotics namely A 10 mL treatment per container, 20 mL treatment B per container and 30 mL C treatment per container. Data were analyzed using Variance Analysis (ANOVA) at 95% confidence level (α 0.05). The results showed that the highest daily growth rate was obtained in Treatment B at 5.84±0.16% per day followed by Treatment A at 5.71±0.23% per day and Treatment C at 5.42±0.10% per day. The highest absolute growth of milkfish was obtained in Treatment B at 8.24±0.28 g per individual and the lowest was in Treatment C at 7.95±0.0.33 g per individual, Continuation in Treatment A and B 83.33±5,77%, while in Treatment C 80.00±10.00%. Analysis of variance (α 0.05) showed that the use of probiotics with different doses significantly affected absolute growth (p>0.011) but did not significantly affect the daily growth rate (p<0.063) and survival (p<0.850) of milkfish