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All Journal JOURNAL OF COASTAL DEVELOPMENT Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Journal of Aquaculture Management and Technology JAM : Jurnal Aplikasi Manajemen Omni-Akuatika Sains Akuakultur Tropis : Indonesian Journal of Tropical Aquaculture Scripta Biologica
Alfabetian Harjuno Condro Haditomo
Departemen Akuakultur, Fakultas Perikanan Dan Ilmu Kelautan Universitas Diponegoro
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Education Environmental Science Other

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Production Performance of Gracilaria verrucosa using Verticulture Method with Various Wide Planting Area in Karimunjawa Titik Susilowati; Agus Nadlir; Alfabetian Harjuno Condro Haditomo; Seto Windarto; Dicky Harwanto; Kurnia Adi
Journal Omni-Akuatika Vol 15, No 1 (2019): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (398.972 KB) | DOI: 10.20884/1.oa.2019.15.1.671

Abstract

Gracilaria verrucosa is one type of seaweed that can be developed into a high-value product. Market demand for agar reaches 21.8% per year, but only 13.1% can be met. This is due to the low level of production of G. verrucosa in Indonesia. Utilization of G. verrucosa is still relying on aquaculture from the farm, which causes low production. Cultivation of seaweed with verticulture methods can increase the production of G. verrucosa. Karimunjawa is a potential area for seaweed cultivation. The aim of this study is to determine the effect of different density areas on the growth and production of G. Verrucosa and to determine the best density area for its production in Karimunjawa. This research used G. verrucosa wrapped in a mesh size of 0.5cm with a weight of 50g per pack. Each verticulture strap contains 4 packs and each treatment consists of 9 straps. The treatment was in the form of differences in the planting area of 25x25cm2 (A), 50x50cm2 (B) and 75x75cm2 (C). The results showed significant differences (P <0.01) between each treatment. The 75x75cm2 area has the best yield on absolute growth, relative growth rate (RGR) and specific growth rate (SGR) of 83.10 ± 4.12g; 3.96 ± 0.20% / day and 2.33 ± 0.07% / day. The best results of G. verrucosa production obtained at an area of 50x50cm2 (5.32 ± 0.26 kg / m2).
GROWTH OF SEAWEED Gracilaria verrucosa CULTURED ON DIFFERENT INITIAL WEIGHT WITH LONGLINE METHODS IN KARIMUNJAWA WATERS TITIK SUSILOWATI; DICKY HARWANTO; CHONDRORESMI BANOR FAWWAZ; ALFABETIAN HARJUNO CONDRO HADITOMO; SARJITO SARJITO
Scripta Biologica Vol 6, No 4 (2019)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1019.551 KB) | DOI: 10.20884/1.sb.2018.5.4.1120

Abstract

One factor that can optimize seaweed production is determining the initial weight of planting. However, planting seaweed in open waters is very vulnerable to aggregation from herbivorous fish. This study aims to determine the best initial weight for the growth of G. verrucosa, which is cultivated in net cage by the longline method. Net cages, made of nylon, are applied as protection for G. verrucosa from aggregation of herbivorous fish. This research was conducted in Karimunjawa waters, Jepara Regency, Central Java, for 42 days. The experimental design used was Randomized Block Design (RBD), with three treatments and four replications each. The treatment was different initial planting weights of 25, 50, and 75 g. The observed variables included culture techniques, relative growth rates, specific growth rates, and water quality. The analysis showed that the different initial weight was very significant (P <0.01) on the growth of G. verrucosa. Treatment with an initial weight of 25 g gave the best relative growth rate (2.07±0.25%.d-1), and the best specific growth rate (1.48±0.13%.d-1). Furthermore, this study was able to prove that the use of a net planting cage on a seaweed hanger can avoid aggregation of herbivorous fish, which is indicated by the growth of G. verrucosa.
PENGARUH SALINITAS YANG BERBEDA TERHADAP PROFIL DARAH IKAN NILA (Oreochromis niloticus) Fahmi Royan; Sri Rejeki; Alfabetian Harjuno Condro Haditomo
Journal of Aquaculture Management and Technology Vol 3. No 2 (2014): Journal of Aquaculture Management and Technology
Publisher : Journal of Aquaculture Management and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (524.519 KB)

Abstract

Ikan nila dapat dibudidayakan ditambak bahkan dilaut melalui proses adaptasi. Ikan nila yang sukses beradaptasi dengan air asin dikenal dengan ikan nila salin.  Ikan nila bersifat eurihaline sehingga dapat hidup pada kisaran salinitas antara 0-35 %0 per mil. Penelitian ini bertujuan untuk mengetahui profil darah ikan nila dalam beraklimasi pada salinitas yang berbeda. Ikan uji yang digunakan adalah ikan nila dengan panjang 13,18±0,94 cm sebanyak 150 ekor. Penelitian ini menggunakan analisa metode eksperimen dan pengolahan data secara deskriptif, mengunakan 5 perlakuan dan 3 ulangan, yaitu perlakuan A (35 ppt), B (25 ppt), C (15 ppt), D (5 ppt), dan E (0 ppt). Ikan dipelihara, dan diambil darahnya selama 7 hari. Pengumpulan data selama penelitian meliputi profil darah (hematokrit, hemoglobin, eritrosit, leukosit, dan glukosa darah), kelulushidupan, dan kualitas air. Hasil yang diperoleh dari penelitian ini yaitu hematokrit terendah 18% pada hari kedua perlakuan B dan tertinggi 25,33% pada hari keenam perlakuan E. Kadar hemoglobin terendah 3,1 g/dl pada hari ketujuh perlakuan C dan tertinggi 5,2 g/dl pada hari keenam perlakuan B. Total eritrosit terendah 1,62x106 sel/mm3 pada hari ketujuh perlakuan E dan tertinggi 4,71 x106 sel/mm3 pada hari keempat perlakuan B. Total leukosit terendah 0,36x104 sel/mm3 pada hari ketujuh perlakuan C dan tertinggi 3,14 x104 sel/mm3 pada hari kelima perlakuan C. Kadar glukusa darah terendah 44 mg/l pada hari keenam perlakuan B dan tertinggi 292 mg/l pada hari kedua perlakuan B. Kesimpulan dari penelitian ini yaitu pada hari pertama perlakuan A (35 ppt) mengalami stres yang paling tinggi dapat dilihat dari hasil glukosa darah dan ikan mengalami kematian keseluruhan pada hari pertama. Pada hari kedua stres meningakat dari hari pertama pada setiap perlakuan kecuali E (0 ppt) dan tertinggi pada perlakuan B (25 ppt). Pada hari berikutnya stres pada ikan pasca perubahan salinitas mengalami penurunan. Tilapia as a eurihaline fish can  live in the sanility range of 0-35 %0. The aims of this research were to determine the tilapia blood profiles at diffrent salinities. 150 Tilapia were used with a length of 13,18±0,94 cm. The research was done experientally with 5 treatment and eacs treatment was replicated 3 times, the treatment were : A treatment (35 ppt), B (25 ppt), C (15 ppt), D (5 ppt), and E(0 ppt). The tilapia maintained for 7 days and the blood was taken in the first until the last day. Data collection during the study includes profiles of blood (Hematocrit, Haemoglobin, Erythrocyte, Leukocyte, Blood glucose) survival, and the water quality. The data were analysed. The result from the research shows of stess that the lowest hematocrit is 18% in the second day at  treatment B and the highest 25,33% in the sixth day at treatment E. The lowest hemoglobin level was is 3,1 g/dl in the seventh day at treatment C and the highest 5,2 g/dl in the sixth day at treatment B. The lowest totall Red blood cell 1,62x106 cell/mm3 in the seventh day at treatment E and the highest 4,71x106 cell/mm3 in fourth day at treatment B. The lowest totall White Blood Cell 0,36x104 sel/mm3 in the seventh day at treatment C, the highest 3,14x104 cell/mm3 in the fifth day at treatment C. The lowest  level of blood glucose 44mg/l in the sixth day at treatment B and the highest 292 mg/l in the second days at treatment B. The conclusion from this research that in the first day treatment A (35 ppt) showed the highest stress levels can be looked at blood glucose and tilapia dead totally in the first day. On the second day, stress increased in the each treatment expect treatment E (0ppt) and the highest in the treatment B (25 ppt). In the next day tilapia stress decreased in the treatment changes.
EFEK PERENDAMAN DALAM EKSTRAK LIDAH BUAYA (Aloe vera) TERHADAP INFEKSI Aeromonas hydrophila, PROFIL DARAH, PERTUMBUHAN, DAN KELANGSUNGAN HIDUP IKAN MAS (Cyprinus carpio) Hasna, Salma Khoironnida; Sarjito, Sarjito; Haditomo, Alfabetian Harjuno Condro; Nurhayati, Dewi; Desrina, Desrina; Prayitno, Slamet Budi
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 20, No 2 (2024): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.20.2.74-84

Abstract

Bakteri Aeromonas hydrophila adalah patogen penyebab penyakit Motile Aeromonas Septicemia (MAS) pada ikan mas dan umum dijumpai di Indonesia. Pengendalian bakteri ini dilakukan dengan menggunakan bahan kimia dan antibiotik yang dikhawatirkan dapat membahayakan lingkungan budidaya dan konsumen yang mengonsumsi ikan tersebut. Oleh karena itu, diperlukan bahan alami yang ramah lingkungan, dapat menghambat pertumbuhan bakteri, serta efektif menyembuhkan penyakit MAS. Lidah buaya (Aloe vera) adalah salah satu bahan alami yang dapat digunakan sebagai obat ikan karena memiliki aktivitas antibakteri yang mampu mengobati ikan mas dari infeksi A. hydrophila. Penelitian ini bertujuan untuk mengetahui efek ekstrak lidah buaya sebagai antibakteri, serta pengaruhnya terhadap status kesehatan ikan mas yang terinfeksi A. hydrophila. Efek antimikroba ditentukan secara in vitro dengan metoda cakram dan dilanjutkan dengan bioassay (empat perlakuan dan tiga kali ulangan) dengan merendam ikan mas yang sudah diinfeksi A. hydrophila dalam ekstrak lidah buaya dengan dosis sebagai berikut, perendaman ikan 0 ppm (A), 250 ppm (B), 500 ppm (C), dan 750 ppm (D). Data yang dikumpulkan meliputi ukuran zona hambat, gejala klinis, jumlah A. hydrophila, profil darah, bobot mutlak, SGR, kelulushidupan, dan kualitas air. Ekstrak lidah buaya menghasilkan diameter zona hambat berkisar antara 7,33-11,02 mm. Perendaman dengan ekstrak lidah buaya berpengaruh nyata terhadap jumlah bakteri, profil darah, pertumbuhan, namun tidak berpengaruh nyata terhadap kelulushidupan ikan mas. Perlakuan D (dosis ekstrak lidah buaya 750 ppm) memberikan hasil terbaik dari semua parameter yang diukur. Aeromonas hydrophila is common carp pathogen that cause Motile Aeromonas Septicemia (MAS) disease and commonly found in Indonesia. Control of this bacteria is carried out using chemicals and it is worried that they can harm aquaculture environment and consumers who consume the fish. Therefore, it is required natural ingredients that are environmentally friendly, can inhibit bacterial growth, and effectively cure MAS. Aloe vera is one of the natural ingredients that can be used as fish medicine because it has antibacterial activity which is expected to be able to treat carp from A. hydrophila infection. This study aims to determine the effect of aloe vera extract as an antibacterial, and its effect on the health status of common carp that attacked by A. hydrophila. The antimicrobial effect was determined in vitro using disc method and continued by bioassay (four treatments and three replications) by immersing carp that infected by A. hydrophila in aloe vera extract with immersion doses of 0 ppm (A), 250 ppm (B), 500 ppm (C), and 750 ppm (D). The data collected included the size of inhibition zone, clinical symptoms, number of bacteria, blood profile, absolute weight value, SGR, SR, and water quality. Aloe vera extract produces inhibition zone diameters from 7,33-11,02 mm. Immersion in aloe vera extract had significant effect on the number of bacteria, blood profile, growth, but had no significant effect on the survival rate of common carp. Treatment D (dose of aloe vera extract 750 ppm) gave the best results from all parameters measured.
ANALYZING MEDIATION EFFECT OF COMPETITIVE ADVANTAGE ON FIRM PERFORMANCE AS MEASURED BY TOTAL QUALITY MANAGEMENT AND SUPPLY CHAIN MANAGEMENT Ramlawati, Ramlawati; Murniati, Sitti; Haditomo, Alfabetian Harjuno Condro; Mambuhu, Nurmawati; Indriakati, Andi Jenni; Fitriana, Fitriana
Jurnal Aplikasi Manajemen Vol. 20 No. 1 (2022)
Publisher : Universitas Brawijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jam.2022.020.01.07

Abstract

The objective of this research is to examine 4 (four) variables, respectively total quality management, supply chain management, competitive advantage, and firm performance. The research type is quantitative. Statistic data were analyzed using SmartPLS version 3.0. The subject of research was book writers at Optima Publikasi Literasi Makassar. The research was done in Optima Publikasi Literasi Makassar, which published and printed books. The research population comprised of book writers at Optima Publikasi Literasi Makassar, which as of November 2020 was counted for 334. Slovin Equation was used on the population, which produced 77 respondents as a research sample. Primary data were collected through a questionnaire. The results showed that better total quality management has an optimization effect on competitive advantage. Better supply chain management delivers a high competitive advantage. Better total quality management has an optimization effect on firm performance. Better supply chain management optimizes firm performance. High competitive advantage has optimization effect on firm performance by improving innovative capacity and increasing competitiveness. Better total quality management optimizes firm performance through competitive advantage by improving firm aspects relating to quality control and competitiveness. Better supply chain management optimizes firm performance through high competitive advantage. Better total quality management has implications for increasing the competitiveness and performance of the company.
THE INFLUENCE OF WORKLOAD AND COMPETENCY ON ORGANIZATIONAL PERFORMANCE WITH ORGANIZATIONAL CULTURE MEDIATION Sitorus, Sunday Ade; Suwitho, Suwitho; Haditomo, Alfabetian Harjuno Condro; Nurfaidah, Resti; Ramlawati, Ramlawati; Hendarto, Totok; Hermawati, Adya
Jurnal Aplikasi Manajemen Vol. 20 No. 2 (2022)
Publisher : Universitas Brawijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jam.2022.020.02.08

Abstract

The objective of this research is to analyze the effect of Workload on Organizational Culture, Competence on Organizational Culture, Workload on Organizational Performance, Competence on Organizational Performance, Organizational Culture on Organizational Performance, Workload on Organizational Performance mediated by Organizational Culture, and Competence on Organizational Performance with the mediation of Organizational Culture. The quantitative approach was used in which the survey was conducted with the questionnaire. Data were collected in the form of an ordinal Likert scale. The analytical model used in this research was Path Analysis. The research population included the employees of KPP Pratama Kriyorejo. Results showed that workload and competence had a significant effect on organizational performance, workload and competence did not significantly affect organizational culture, but workload and competence had a significant effect on organizational performance with the mediation of organizational culture.
ANALYZING THE ROLE OF ORGANIZATIONAL COMMITMENT AND JOB SATISFACTION IN MINIMIZING TURNOVER INTENTION Hermawati, Adya; Sambung, Roby; Ramlawati; Iswati; Haditomo, Alfabetian Harjuno Condro; Hendarto, Totok
Jurnal Aplikasi Manajemen Vol. 20 No. 3 (2022)
Publisher : Universitas Brawijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jam.2022.020.03.01

Abstract

As an organization, hospitals should always make efforts to improve the performance of their employees because those employees will help the hospitals to attain their vision, mission, and goals. This research aims to analyze the effect of organizational climate on turnover intention in mediating organizational commitment and job satisfaction. The research type is a cross-sectional study with a quantitative approach. Data collection is done in one-time observation through a survey involving questionnaires. Items of the questionnaire are arranged on the Ordinal Likert Scale. The data analysis instrument is Variance Based Structural Equation Modelling (SEM), or Second-Order Partial Least Square Program (Smart PLS Version 2.0). The research subject or analysis unit is all employees at Mother-Child Health Hospital of Rembang. Population (N) of research includes all hospital employees, a total of 218 individuals. The employees are divided into clinical staff involved in health care services and non-clinical staff who are definitely not included in the clinical group. The sampling technique is random sampling which takes only some population members to represent the population. There are 70 individuals selected from the workgroup to act as respondents. Then, several conclusions are obtained from the analysis and results of the hypothesis test. A good organizational climate can strengthen organizational commitment. Regarding this position, it is suggested that Mother-Child Health Hospital of Rembang maintain and improve its organizational climate.
Co-Authors - Desrina, - Achmad Siddiq Bayusetiaji, Achmad Siddiq Adya Hermawati Agus Nadlir Angela Mariana Lusiastuti Ardulanisa, Ridha Astuti, Agustin Putri Kusuma CHONDRORESMI BANOR FAWWAZ D esrina Desrina Desrina Dewi Nurhayati Diana Chilmawati Dicky Harwanto Ditha Cahyaningrum Ditha Febriana Dewanti Nineung Fahmi Royan Fajar Basuki Fitriana Fitriana Hardyta Noviar Rahma Hasna, Salma Khoironnida Indriakati, Andi Jenni Iswati Kurnia Adi Laksono Trisnantoro Lilik Setiyaningsih Mambuhu, Nurmawati Milza Apriliani, Milza Monica Nanda Murniati, Sitti Nida Qolbi Salma Rochani Pricilia, Shella Rahmi Gusti Darma Ramlawati Ramlawati Ramlawati Raynol Simorangkir Rensiga Rintan Bunga Sari Resti Nurfaidah Roby Sambung Rosa Amalia S arjito Sarah, Humidah Sarjito - Sarjito, - - Sekar Mentari Putri, Sekar Mentari Seto Windarto Setyani, Rina Slamet Budi Prayitno Sri Rejeki Sulisyaningrum Sulisyaningrum Sunday Ade Sitorus Suwitho, Suwitho Titik Susilowati Totok Hendarto Wardhani, Catleya Kusuma WIDANARNI WIDANARNI