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All Journal Journal of Innovation and Applied Technology JFMR (Journal of Fisheries and Marine Research) Jurnal Perikanan Universitas Gadjah Mada Journal of Aquaculture and Fish Health Tomini Journal of Aquatic Science Journal of Fisheries & Marine

Muhammad Fakhri

Department Of Aquaculture, Faculty Of Fisheries And Marine Science, Universitas Brawijaya. Malang. Indonesia

Author-ID : 8413451

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Engineering Environmental Science Immunology & microbiology

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PENGARUH SALINITAS TERHADAP PERTUMBUHAN, BIOMASSA DAN KLOROFIL-a DUNALIELLA SP. Muhammad Fakhri; Arning Wilujeng Ekawati
JFMR (Journal of Fisheries and Marine Research) Vol 4, No 3 (2020): JFMR VOL 4 NO 3
Publisher : JFMR (Journal of Fisheries and Marine Research)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2020.004.03.12

Dunaliella sp. merupakan mikroalga hijau yang kaya beta karoten dan klorofil, bersifat euryhaline, dan telah banyak dimanfaatkan untuk budidaya ikan dan udang. Salah satu strategi yang dilakukan untuk meningkatkan produktivas mikroalga adalah dengan melakukan optimasi kondisi lingkungan. Salinitas merupakan factor esensial yang mempengaruhi pertumbuhan dan kandungan biokimia Dunaliella. Tujuan penelitian ini adalah untuk menjelaskan pengaruh salinitas yang berbeda dan menentukan salinitas terbaik untuk pertumbuhan, produksi biomassa, dan klorofil-a Dunaliella sp. salinitas yang berbeda yaitu 5 ppt, 15 ppt, 25 ppt, dan 35 ppt digunakan pada penelitian ini. Hasil dari penelitian ini menunjukkan bahwa salinitas yang berbeda berpengaruh terhadap pertumbuhan, produksi biomassa, dan klorofil-a Dunaliella sp. (p<0,05). Salinitas terbaik untuk pertumbuhan, produksi biomassa dan klorofil-a Dunaliella sp. diperoleh pada salinitas 15 ppt yang menghasilkan konsentrasi sel maksimum sebesar 19,86 x 106 sel mL-1, biomassa 0,52 g l-1, dan klorofil-a 11,26 mg/l. Laju pertumbuhan yang tinggi berhubungan dengan biomassa dan kandungan klorofil-a Dunaliella sp. Dapat disimpulkan bahwa salinitas yang berbeda memberikan pengaruh signifikan terhadap pertumbuhan, produksi biomassa, dan klorofil-a Dunaliella sp. Disarankan menggunakan salinitas 15 ppt untuk menghasilkan pertumbuhan, produksi biomassa dan klorofil-a yang optimal.

UTILIZATION OF ARTEMIA IN THE LAMINING OF CAT FISH, Clarias sp. IN KARANG BESUKI URBAN VILLAGE Agoes Soeprijanto; Pratama Deffi Samuel; Muhammad Fakhri
Journal of Innovation and Applied Technology Vol 3, No 2 (2017)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Brawijaya

AbstractThe main problem in catfish hatchery is low productivity and survival rate (SR). The aim of this work was to evaluate the application of artemia in catfish hatchery. Artemia was administered to 100,000 catfish larvae for 3 days with the total of 602 gr. The results showed that 70,000 catfish juveniles with size of 2-3 cm were obtained under artemia application. The survival rate of this study was 70%. It can concluded that probiotic application was able to improve the survival rate and the feed conversion ratio in catfish culture.

APPLICATION OF PROBIOTIC IN THE NURSERY AND GROW-OUT OF (Clarias gariepinus) IN THE PANDANWANGI VILLAGE Muhammad Fakhri; Muhammad Rasyid Fadholi; Pratama Diffi Samuel
Journal of Innovation and Applied Technology Vol 2, No 2 (2016)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Brawijaya

Catfish (Clarias gariepinus) is one of the most cultured fish in Indonesia. The main problem in catfish culture is low productivity and high feed conversion ratio (FCR). The purpose of this activity was to evaluate the application of probiotic in catfish culture. For nursery, catfish juveniles with size of 2-3 cm was cultured for 40 days while fish with size of 7-9 cm was cultivated for 85 days in grow-out tank. All tanks were treated by probiotic during one culture cycle. Probiotic was directly given to the water and administered by feed. The results showed that survival rates of nursery and grow-out tanks were 90 and 92%, respectively. The FCR value in the grow-out was 0.8. It can concluded that probiotic application was able to improve the survival rate and the feed conversion ratio in catfish culture.

PROBIOTIC APPLICATION IN THE NURSERY AND REARING OF Clarias sp. IN THE TUMPANG SUBDISTRICT Muhammad Fakhri
Journal of Innovation and Applied Technology Vol 3, No 1 (2017)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Brawijaya

The main problem in catfish culture is high mortality and high feed conversion ratio (FCR). The aim of this study was to know the application of probiotic in catfish culture. For nursery, catfish juveniles with size of 2-3 cm was cultivated for 40 days while fish with size of 7-9 cm was cultured for 85 days in grow-out tank. All tanks were administered by probiotic during one culture cycle. Probiotic was directly given to the water and administered by feed. The results showed that survival rates of nursery and grow-out tanks were 95% and 95,8%, respectively. The FCR in the grow-out was 0.76. It can concluded that probiotic application was able to improve the survival rate and the feed conversion ratio in catfish culture.

Improvement Of Feed Utilization And Survival Rate Of Clarias Gariepinus Using Probiotic And Fermented Feed In Cemorokandang District Muhammad Fakhri; Arning Wilujeng Ekawati
Journal of Innovation and Applied Technology Vol 5, No 2 (2019)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jiat.2020.005.02.1

The common problem faced by catfish culturing in Cemorokandang District is high feed costs, low survival rate and high feed conversion ratio. The purpose of this acivity was to solve the problems faced by the farmers of catfish culture. The method of this activity was to transfer a knowledge and appropriate technology to farmers through Participatory Rural Appraisal and Participatory Technology Development. The activities that have been carried out in catfish culture are: (1) socialization, training and mentoring of probiotic production, (2) socialization, training and mentoring of fermented feed production using soy flour and wheat bran (3) construction of 2 m diameter of tarpaulin tanks , (4) provision of catfish seeds 7 cm, (5) the application of fermented feed and probiotic, and (6) monitoring and evaluation.

LIMBAH BANDENG (Chanos chanos Forsskal) SEBAGAI SUMBER PROTEIN PENGGANTI TEPUNG IKAN DALAM PAKAN UDANG GALAH (Macrobracium rosenbergii de Man) Arning Wilujeng Ekawati; Muhammad Fakhri; Joko Abdillah; Wiwit Nor Indahsari
Journal of Aquaculture and Fish Health Vol. 8 No. 3 (2019): JAFH vol. 8 no. 3 September 2019
Publisher : Department of Aquaculture

Tujuan penelitian ini untuk menentukan jumlah terbaik pemanfaatan tepung limbah bandeng (Chanos chanos) sebagai sumber protein pengganti tepung ikan dalam pakan udang galah (M. rosenbergii de Man). Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan 5 perlakuan dan 3 ulangan. Pakan yang digunakan sebagai perlakuan adalah pakan iso protein 35% dan iso energi 3,40 kkal/g dengan perbedaan subtitusi protein tepung limbah bandeng terhadap tepung ikan, yaitu: (A) 0%; (B) 25%; (C) 50%; (D) 75%; dan (E) 100%. Parameter yang diamati dan dianalisis terdiri dari: kelulushidupan, laju pertumbuhan spesifik, rasio konversi pakan, rasio efisiensi protein, dan retensi protein pada udang galah (M. rosenbergii de Man). Hasil penelitian menunjukkan bahwa pemanfaatan tepung limbah bandeng sebagai sumber protein hewani pengganti tepung ikan dengan persentase yang berbeda dalam formula pakan tidak berpengaruh nyata terhadap semua parameter yang diamati pada udang galah (M. rosenbergii de Man). Berdasarkan hasil penelitian dapat disimpulkan bahwa pemanfaatan tepung limbah bandeng dapat menggantikan tepung ikan sebagai sumber protein dalam pakan udang galah (M. rosenbergii de Man) hingga 100%.

Growth, Pigment and Protein Production of Spirulina platensis under different Ca(NO3)2 concentrations Muhammad Fakhri; Prive Widya Antika; Arning Wilujeng Ekawati; Nasrullah Bai Arifin
Journal of Aquaculture and Fish Health Vol. 9 No. 1 (2020): JAFH Vol. 9 no. 1 February 2020
Publisher : Department of Aquaculture

Spirulina platensis is a filamentous cyanobacterium that has been commerically used for fish feed and human food supplement. Low-cost production of Spirulina is needed when considering large-scale culture especially for industrial purposes. The aim of this study was to explain the effect of calcium nitrate (Ca(NO3)2) on growth, biomass, pigment, and protein production of S. platensis and to determine the best calcium nitrate concentration for Spirulina production.The microalgae was cultured at four calcium nitrate concentrations (1, 1.5, 2.0 and 2.5 g/L) with salinity of 15 ppt, constant light intensity of 4,000 lux and photoperiod of 24:0 light:dark cycles for 4 days. The results showed that different calcium nitrate concentrations remarkably affected the growth, biomass production, pigment and protein content of S. platensis (p<0.05). The highest specific growth rate of 0.721 day-1 and biomass concentration of 1.512 g/Lwere achieved at calcium nitrate concentration of 2.5 g/L. Moreover, the algae had the highest chlorophyll-a, carotenoid and protein content at 2.5 g L-1. Increasing calcium nitrate concentration from 1 to 2.5 g/L led to an increase in biomass, pigment and protein production of S. platensis. However, there was no significant difference between 2 and 2.5 g L-1 calcium nitrate concentrations. We suggest that 2-2.5 g/L Ca(NO3)2 concentration can be used profitably for S. platensis production.

Masculinization of Nile tilapia (Oreochromis niloticus) using 17α-methyl testosteron Yuni Widyawati; Muhammad Fakhri; Muhammad Dailami; Nasrullah Bai Arifin
Tomini Journal of Aquatic Science VOLUME 2 ISSUE 1, MAY 2021
Publisher : Gorontalo State University

The biological nature of tilapia which causes uncontrolled mating and has an impact on reducing the quality of the fish has become one of the problems in tilapia aquaculture production. 5 times faster than female tilapia. The production of male monosexual tilapia can be obtained in several ways, including the application of low doses of hormones. The purpose of this study was to determine the effectiveness of using low doses of 17α Methyl Testosterone (MT) in immersing tilapia larvae and to obtain superior quality male tilapia results. This study used tilapia larvae that were 1 week old and were stocked in a tank measuring 30x60cm with a dose of MT 1 mg / l, 3 mg / l and 5 mg / l with 3 replications and 1 control. stocking density of 250 birds per cage. Soaking is carried out for 8 hours. The results of immersion of tilapia larvae using MT at a dose of 3 mg / l until the 60th day showed the highest results with the proportion of 72% compared to the untreated dose, 1 mg / l and 5 mg / l. It can be ignored that the use of low doses of 17α Methyl testosterone can affect sex changes in tilapia larvae. The results showed that the dose of 5 mg / l was the best dose with the proportion of male genitalia at 97%.

KARAKTERISTIK PERTUMBUHAN Tetraselmis sp. DAN Nannochloropsis sp. Muhammad Fakhri; Nasrullah B. Arifin
Jurnal Perikanan Universitas Gadjah Mada Vol 18, No 1 (2016)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.10749

Pemantauan pertumbuhan mikroalga (Tetraselmis sp. dan Nannochloropsis sp.) merupakan salah satu faktor penting dalam budidaya ikan dan udang. Tujuan penelitian ini adalah untuk mengetahui karakteristik pertumbuhan Tetraselmis sp. dan Nannochloropsis sp. dengan mengukur kerapatan optik menggunakan metode spektrofotometri. Penyerapan 600 nm digunakan untuk kedua spesies. Hasil penelitian menunjukkan bahwa pertumbuhan maksimum dicapai pada hari ke 6 untuk kedua mikroalga dengan nilai OD masing-masing 1,734 ± 0,013 dan 1,329 ± 0,002 untuk Tetraselmis sp. dan Nannochloropsis sp.. Tetraselmis sp. memiliki tingkat pertumbuhan maksimum 0,74/hari dan waktu penggandaan 22,43 jam sedangkan Nannochloropsis sp. memiliki tingkat pertumbuhan maksimum 0,86/hari dan waktu penggandaan 19,25 jam. Penelitian ini menunjukkan bahwa absorbansi 600 nm cocok untuk mengetahui pertumbuhan mikroalga hijau dan metode spektrofotometri yang dapat digunakan secara efisien untuk memantau pertumbuhan mikroalga.

Komunitas Fitoplankton Pada Sistem Budidaya Intensif Udang Vaname, Litopenaeus vannamei di Probolinggo, Jawa Timur [Phytoplankton Community at Intensive Cultivation System of White Shrimp, Litopenaeus vannamei in Pr Nasrullah Bai Arifin; Muhammad Fakhri; Ating Yuniarti; Anik Martinah Hariati
Jurnal Ilmiah Perikanan dan Kelautan Vol. 10 No. 1 (2018): Jurnal ilmiah perikanan dan kelautan
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v10i1.8542

AbstrakFitoplankton merupakan sumber pakan alami pada budidaya udang di tambak. Produktivitas fitoplankton dapat meningkat seiring dengan bertambahnya kandungan nutrien di tambak. Sisa metabolisme dan pakan merupakan sumber nutrien bagi pertumbuhan fitoplankton di tambak. Penelitian ini bertujuan untuk mengevaluasi produktivitas dan mengidentifikasi jenis fitoplankton pada sistem budidaya intensif udang vaname, Litopenaeus vannamei. Penelitian ini dilakukan pada tiga petak tambak budidaya intensif udang vaname di Probolinggo, Jawa Timur. Pengambilan sampel air tambak dilakukan pada hari ke-17 dan hari ke-87 masa budidaya masing-masing dua kali setiap petak. Empat parameter lingkungan yaitu total ammonia nitrogen (TAN), nitrat, orthophosphate, total padatan tersupensi (TSS), dan klorofil diukur pada setiap sampel air tambak. Selain itu, kami juga mengidentifikasi dan menghitung fitoplankton pada setiap sampel. Hasil penelitian ini menunjukkan bahwa produktivitas pada ke tiga tambak berkisar antara 22.893,83 kg/ha sampai 23.600,61 kg/ha dengan ukuran panen 12,74 g/ekor sampai 14,35 g/ekor. Selama masa budidaya, konsentrasi TAN, TSS, dan klorofil meningkat seiring dengan semakin lamanya masa budidaya. Sementara itu, rerata kandungan nitrat dan orthophosphate cenderung menurun seiring bertambahnya masa budidaya. Jenis fitoplankton yang teridentifikasi yaitu dalam genus Oocystis, Chlorella, Nannochloropsis, Chaetoceros, Stephanodiscus, Nitzschia, Coscinodiscus, Cyclotella, dan Ulothrix. Fitoplankton dari kelompok Chlorophyta merupakan jenis yang dominan pada tambak 1 dan 2, sedangkan tambak 3 didominasi oleh kelompok Diatom. Penelitian ini mengindikasikan bahwa keberadaan fitoplankton di tambak mendukung ketersediaan pakan alami dan lingkungan yang baik bagi budidaya udang. AbstractPhytoplankton is a source of natural feed for shrimp cultivation in the pond. Phytoplankton productivity increases by the increased nutrient content in the pond. Feed and metabolic waste is the sources of nutrient for phytoplankton growth. This study aimed to evaluate productivity and identify phytoplankton at intensive white leg shrimp, Litopenaeus vannamei cultivation system. This study was conducted at three intensive white shrimp located in Probolinggo, East Java. Samples were collected on the early and the late of culture period (day 17 and 87 after stocking). Four environmental parameters including total ammonia nitrogen (TAN), nitrate, orthophosphate, total suspended solids (TSS), and chlorophyll-a were measured. Identification and density of phytoplankton were also performed of each pond. The result showed that the productivity of three ponds was 22,893.83 kg/ha to 23,600.61 kg/ha with an average size of 12.74 g to 14.35 g. During culture period, the concentration of TAN, TSS, and chlorophyll-a tended to increase. Meanwhile, the average of both nitrate and orthophosphate tended to decline. Several phytoplankton identified in this study were in the genus of Oocystis, Chlorella, Nannochloropsis, Chaetoceros, Stephanodiscus, Nitzschia, Coscinodiscus, Cyclotella, and Ulothrix. Phytoplankton of the group Chlorophyta is predominance for pond 1 and 2, while pond 3 was dominated by phytoplankton in the group of Diatom/Baccillariophyta. This study indicated that the presence of phytoplankton in the pond provides natural feed and good environmental condition for shrimp cultivation.

Co-Authors Agoes Soeprijanto, Agoes Anik M. Hariati Arning Wilujeng Ekawati Ating Yuniarti Hariati, Anik Martinah Joko Abdillah Muhammad Dailami, Muhammad Muhammad Rasyid Fadholi Nasrullah B. Arifin Nasrullah Bai Arifin Nasrullah Bai Arifin Nasrullah Bai Arifin Nasrullah Bai Arifin Nasrullah Bai Arifin Pratama Deffi Samuel Pratama Diffi Samuel Prive Widya Antika Wiwit Nor Indahsari Yuni Widyawati

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