Suzanne L. Undap
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Limbah hasil produksi budidaya ikan sistem karamba jaring tancap di Desa Eris, Talikuran dan Kaima Kabupaten Minahasa Asmirawati Zai; Diane J. Kusen; Suzanne L. Undap; Novie P.L. Pangemanan
e-Journal BUDIDAYA PERAIRAN Vol. 11 No. 1 (2023)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/bdp.11.1.2023.43451

Abstract

This study aimed to obtain the amount of organic waste, nitrogen and phosphorus that wasted to  lake and measuring water quality parameters, temperature, dissolved oxygen (DO), acidity (pH) and dissolved solids (TDS) in the area of fixed net cages at Lake Tondano in the villages of Eris, Talikuran and Kaima. This research was carried out in Lake Tondano, Eris, Talikuran and Kaima villages . The time of the study was carried out from March to July 2022. This study used     a descriptive exploration method. Data obtained included primary and secondary data. Primary data otained from interview results and parameter measurements of the water quality in the field (in situ). Secondary data obtained through various resources such as journals and the results of previous studies related to the topic under study. The data of organic waste, nitrogen, and phosphorus were analyzed descriptively using Schmittou method. The results of analyzing the parameters quality of water was presented in the form of tables and graphs then compared with the class of water quality standards in Government Regulation Number 22, 2021 regarding the Implementation of Environmental Protection and Management. The results showed that the amount of organic waste in Eris Village was 874.74 tons/year, Talikuran village 170.52 tons/year, and kaima village 105.80 tons/year, the amount of nitrogen waste in Eris village is 49.86 tons/year, Talikuran village 9.67 tons/year, and kaima village 6.00 tons/year, the amount of phosphorus waste in Eris Village is 17.24 tons/year, Talikuran Village 3.35 tons/year and Kaima Village 2.08 tons/year. The temperature in Eris Village is in the range of 27.4-29.5 °C, Talikuran Village is 26.5-30.3 °C and   Kaima Village is 26.6-30 °C, DO in Eris Village is 5.25-6, 74 mg/L, Talikuran Village 3.76-6.69 mg/L and Kaima Village 4.86-7.18 mg/L, pH in Eris Village was in the range of 7.2-7.9, Talikuran Village 7.1-7.8 and Kaima Village 7,3-7,8, TDS in Eris Village is in the range of 0.104-0.114 g/L, Talikuran Village is 0.117-0.160 g/L and Kaima Village is 0.104-0.114 g/L. The measured water quality parameter data still meets the water quality standard value.
Cardinal Fish Otolith Biometrics Banggai Pterapogon kauderni Koumans, 1933 In the Front Waters of Dudepo TPI Dudepo, South Bolaang Mongondow Regency and in the Lembeh Strait, Bitung City Hellen Melani; Ari B. Rondonuwu; Joudy R.R Sangari; Fransine B. Manginsela; Silvester B. Pratasik; Suzanne L. Undap
Jurnal Ilmiah PLATAX Vol. 11 No. 1 (2023): ISSUE JANUARY-JUNE 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i1.44002

Abstract

This study aims to determine the biometric comparison of otoliths of Banggai cardinal fish based on gender and to determine the comparison of otolith biometrics at two locations in the Waters Front of TPI Dudepo Kab. South Bolaang Mongondow and in the Lembeh Strait, Bitung City. Data collection in the field using the roaming survey method. Fishing is done by snorkelling, catching a minimum of 50 individuals representing each size class using Chang net/Sibu fishing gear. The differences in otoliths in male and female sexes have seven different otolith characters in otolith length (OL), otolith width (OW), otolith area (OA) and otolith perimeter (OP), roundness (Rnd), ellipticity (Ell) and aspect ratio (Ar), and three characters that do not show significant differences, namely form factor (Ff), circularity (Cir), rectangularity (Rec). The differences in otoliths based on location in front of the Dudepo TPI and in the Lembeh Strait have seven different otolith characters in otolith length (OL), otolith width (OW), otolith area (OA) and otolith perimeter (OP), roundness (Rnd), ellipticity (Ell). and aspect ratio (Ar), and three characters that do not show significant differences, namely form factor (Ff), circularity (Cir), rectangularity (Rec). Keywords: Biometrics, cardinal proud fish, comparison Abstrak Penelitian ini bertujuan untuk mengetahui perbandingkan biometrik otolit ikan kardinal banggai berdasarkan jenis kelamin dan mengetahui perbandingan biometrik otolit pada dua lokasi di Perairan Depan TPI Dudepo Kab. Bolaang Mongondow Selatan dan di Selat Lembeh Kota Bitung. Pengambilan data di lapangan menggunakan metode survei jelajah. Penangkapan ikan dilakukan dengan penyelaman snorkling, penangkapan minimal 50 individu yang mewakili setiap kelas ukuran dengan alat tangkap Chang net/Sibu. Perbedaan otolit pada jenis kelamin jantan dan jenis kelamin betina memiliki tujuh perbedaan karakter otolit pada panjang otolit (OL), lebar otolit (OW), area otolit (OA) dan perimeter otolit (OP), roundness (Rnd), ellipticity (Ell) dan aspect ratio (Ar), dan tiga karakter yang tidak menunjukkan perbedaan yang signifikan, yaitu form factor (Ff), circularity (Cir), rectangularity (Rec). Perbedaan otolit berdasarkan lokasi di depan TPI Dudepo dan di Selat Lembeh memiliki tujuh perbedaan karakter otolit pada panjang otolit (OL), lebar otolit (OW), area otolit (OA) dan perimeter otolit (OP), roundness (Rnd), ellipticity (Ell) dan aspect ratio (Ar), dan tiga karakter yang tidak menunjukkan perbedaan yang signifikan, yaitu form factor (Ff), circularity (Cir), rectangularity (Rec). Kata kunci: Biometrik, ikan banggai kardinal, perbandingan
Isolation and amplification of 16S rRNA gen of Associated Microbial isolates in Red Algae Kappaphycus alvarezii from Belang, Southeast Minahasa Regency, North Sulawesi Letha L. Wantania; Stenly Wullur; Elvi L. Ginting; Desy M. H. Mantiri; Suzanne L. Undap; Deiske A. Sumilat; Grevo S. Gerung
Jurnal Ilmiah PLATAX Vol. 7 No. 1 (2019): ISSUE JANUARY-JUNE 2019
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.7.1.2019.22808

Abstract

This study aims to obtain isolates and amplify the associative bacterial 16SrRNA gene in K. alvarezii algae. The K. alvarezii algae was collected from seaweed cultivation area in Belang, Southeast Minahasa, North Sulawesi. Associative bacteria were sampled from K. alvarezii algae, grown in Nutrient Agar and separated based on their morphological characteristics.  Each isolates were extracted their DNA genome and.the16S rRNA gene of each isolate was amplified using PCR.  Eight associative bacterial from K. alvarezii algae were successfully isolated based on morphological characteristics which were dominated by round shape, smooth edges, convex elevation, and white color of the isolates. The results of genomic DNA extraction from each of these isolates were successfully used as templates to amplify the 16s rRNA gene.Key word: Bacteria, Kappaphycus alvarezii, Taxsonomy, 16S rRNAABSTRAKPenelitian ini bertujuan untuk mendapatkan isolat dan mengamplifikasi gen 16SrRNA bakteri asosiatif pada alga K. alvarezii. Metode penelitian diawali dengan pengambilan sampel alga K. alvarezii di lokasi pembudidayaan rumput laut di desa Belang, Minahasa Tenggara, Sulawesi Utara. Selanjutnya, bakteri asosiatif pada alga K. alvarezii tersebut ditumbuhkan dalam media Nutrient Agar, isolat yang tumbuh kemudian dipisahkan berdasarkan karakteristik morfologinya. dan gen 16S rRNA masing-masing isolat diamplifikasi menggunakn PCR.  Delapan isolat bakteri asosiatif pada alga K. alvarezii berhasil diisolasi dengan karakteristik morfologi berbeda yang didominasi dengan bentuk round, tepian smooth, elevasi convex, dan warna putih. Hasil ekstraksi DNA genom dari masing-masing isolat tersebut berhasil digunakan sebagai template untuk mengamplifikasi gen 16s rRNA.Kata Kunci: Bakteri, Kappaphycus alvarezii, Taksonomi, 16S rRNA
Water quality management for aquaculture at Lake Tutud, North Sulawesi Suzanne L. Undap; Reiny A. Tumbol
Jurnal Ilmiah PLATAX Vol. 4 No. 2 (2016): EDISI JULI-DESEMBER 2016
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.4.2.2016.15225

Abstract

Southeast Minahasa Regency has potential natural resources, one of them related aquculture in Lake Tutud. Considering the conditions and opportunities for the development of aquaculture in Lake Tutud, improvement efforts and increase the potential for fish production needs to be done. Some of the factors that caused the current problems include declining water level of Lake Tutud drastically in recent years caused by the death of most of spring water coming into the lake causing sedimentation, high content of sulfur from the irrigation run off. All of these problems can be a barrier to tilapia fish culture, so it is necessary to periodically measure the water quality in Lake Tutud in order to improve and enhance the quality of the water before it is used for culture efforts. Referring to the current economic conditions of the community around Lake Tutud of Tombatu 3 Village include community leaders and the fish farmers are also public observers who are interested in this program, through the Program Implementation of science and technology for the Community (IbM) of PNBP UNSRAT given counseling, training and mentoring such as water quality management technology. The methods used in the implementation of science and technology program are education, training, discussion and mentoring. Materials used were proper method of producing fish seeds, the stages of the production process, the use immunostimulatory in fish feed for fish disease management, maintain and improve water quality. With the Community Service Program through the application of science and technology, it is expected that there will be a transferred in science and technology in water quality management of Tutud lake so hopefully their business development, creation of business opportunity, income generation and welfare of the people in this Tombatu 3 village. The results revealed that the implementation of this community service activity in the form of the application of science and technology are: lecture activities, training, discussion and question and answer, including the lake water quality measurements that have been going well with good response of the fish farmers indicated by the presence of participants as much as 80%, show that a). increased production of tilapia fish farmers through water quality management can be implemented, b). tilapia fish farming is feasible and can provide profit if done properly, so it can be an alternative in an effort to help the reduction of unemployment and poverty. Interaction with the community on this community service activity, it is found that there were many people who still do not understand much about the overall material included engineering, water quality management and proper fish feed and feeding method. One of the barriers was the language, so it is necessary for the lectures and trainers to use the local language. It can be recommended in the future to keep on doing this kind of community service considering the inherent of the knowledge and application of water quality management is still a new thing and has a business prospective opportunities in the Tombatu 3 village. Keywords: water quality, community, management. Abstrak Kabupaten Minahasa Tenggara mempunyai potensi sumber daya alam yang banyak salah satunya yang berkaitan dengan bidang Perikanan budi daya air tawar adalah Danau Tutud. Memperhatikan kondisi dan peluang pengembangan pembudidayaan ikan di Danau Tutud maka upaya perbaikan dan peningkatan potensi produksi ikan perlu dilakukan. Budi daya ikan khususnya di Danau Tutud adalah pembudidayaan pembesaran ikan nila di Keramba Jaring Tanjap (KJT). Dalam usaha pengembangan budi daya ikan air tawar harus diimbangi dengan pengelolaan kualitas air danau dan penanganan penyakit ikan yang baik. Oleh sebab itu aspek-aspek yang menjadi factor pembatas dalam hal peningkatan produksi perlu dicari jalan keluarnya yang baik. Beberapa faktor yang menjadi masalah yang dihadapi saat ini antara lain adalah menyusutnya secara drastis permukaan air Danau Tutud dalam beberapa tahun belakangan ini akibat dari matinya sebagian besar mata air yang masuk ke danau sehingga mengalami sedimentasi, selain itu kandungan sulfur atau belerang cukup tinggi dari air irigasi yang berasal dari danau yang mana akan dapat menjadi hambatan usaha pembenihan ikan nila, sehinggan diperlukan adanya pengukuran kualitas air Danau Tutud untuk dapat memperbaiki dan meningkatkan kualitas air sebelum dipergunakan untuk usaha budi daya. Mengacu pada kondisi tersebut maka untuk masyarakat sekitar Danau Tutud di Desa Tombatu 3 antara lain para tokoh masyarakat dan para pembudidaya ikan juga masyarakat pemerhati yang tertarik pada program ini, melalui Program Penerapan Ipteks bagi Masyarakat (IbM) dari PNBP UNSRAT diberikan penyuluhan, pelatihan dan pendampingan berupa teknologi pengelolaan kualitas air. Metode yang digunakan dalam Program Penerapan Ipteks ini adalah penyuluhan, pelatihan, diskusi dan pendampingan. Materi kegiatan pengabdian penerapan Ipteks ini meliputi cara memproduksi benih ikan yang benar dan baik, tahapan-tahapan proses produksi pakan ikan yang diberi imunostimulan untuk penanganan penyakit ikan, tahapan tahapan untuk memelihara dan meningkatkan kualitas air. Dengan Program Pengabdian Kepada Masyarakat melalui penerapan Ipteks ini diharapkan dapat ditransfer ilmu dan teknologi pengelolaan kualitas air Danau Tutud sehingga diharapkan adanya pengembangan usaha, penciptaan peluang berusaha, peningkatan pendapatan dan kesejahteraan masyarakat di Desa Tombatu 3 ini. Hasil pelaksanaan kegiatan pengabdian kepada masyarakat dalam bentuk penerapan ipteks ini adalah: kegiatan ceramah, pelatihan, diskusi dan tanya jawab, termasuk dengan pengukuran kualitas air Danau Tutud telah berjalan dengan baik respon kehadiran peserta sebanyak 80%. Dari hasil pelatihan, diskusi tanya jawab dan prakek dilapangan menunjukkan bahwa a). peningkatan produksi pembudidaya ikan nila melalui pengelolaan kualitas air ini dapat dilaksanakan, b). pembudidayaan ikan nila ini layak dan dapat memberikan profit bila dilaksanakan dengan baik dan benar, sehingga dapat menjadi alternatif lapangan usaha baru untuk membantu program pengentasan penggangguran dan penanggulangan kemiskinan. Dari hasil interaksi dengan masyarakat pada kegiatan pengabdian ini diketahui bahwa banyak masyarakat yang masih belum banyak mengerti tentang keseluruhan materi termasuk pada materi teknik dan proses pengelolaan kualitas air dan pakan ikan yang baik dan benar, salah satu kendala adalah bahasa, sehingga perlu ceramah dan pelatihan yang menggunakan bahasa setempat. Untuk selanjutnya dapat direkomendasikan agar terus digalakkan dan dilakukan pembinaan yang melekat mengingat pengetahuan dan penerapan pengelolaan kualitas air ini masih merupakan hal yang baru dan merupakan peluang usaha yang prospektif di Desa Tombatu 3. Keywords: Kualitas Perairan, Komunitas, Manajemen.
Application of probiotic bacteria isolated from catfish (Clarias batrachus) intestine to enhance growth performance and resistance of carp (Cyprinus carpio) against Aeromonas hydrophila Febi S.D. Saragih; Henky Manoppo; Suzanne L. Undap; Edwin L. A. Ngangi; Sammy N. J. Longdong; Diane J. Kusen
Jurnal Ilmiah PLATAX Vol. 7 No. 2 (2019): ISSUE JULY - DECEMBER 2019
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.7.2.2019.23724

Abstract

The objective of research was to isolate probiotic bacteria from catfish intestine and to examine its effects on the growth and resistance of carp against Aeromonas hydrophila.  The probiotic isolated from intestine was grown on MRS agar.  Fish used in this research was juvenile of carp with an average weight of 5.5 g obtained from Freshwater Aquaculture Board at Tatelu Village, North Sulawesi Province.  Before running the experiment, the juveniles were adapted for one weeks in 15 glass aquaria at a density of 15 individuals each.  After acclimatization, the fish were fed diet supplemented with probiotic at different concentrations namely 1x109 , 1x108 , 1x107,  1x106 cfu/mL for three weeks. The fish were fed two times a dayat 08.00 am and 17.00 pm with a dose of 5% of body weight per day. At the end of feeding, the fish were challenged with A. hydrophila.  Data collected included average growth rate, absolute growth, feed efficiency, and food conversion ratio.  Research results found that the addition of probiotic into feed was  able to increase growth and feed efficiency and reduce food conversion ratio as well (p<0.01). The best growth, feed efficiency and food conversion ratio were obtained in fish fed diet added with probiotic bacteria at 1x108 cfu/mL.  The highest survival rate was also observed in fish probiotic diet containing 1x108 cfu/mL.  As conclusion, probiotic bacteria isolated from catfish intestine was potential to improve growth, feed efficiency, reduce food conversion ratio and increase resistance of fish against bacterial pathogen.Keywords: probiotic, carp, Aeromonas hydrophila, feed efficiency, food conversion ratioABSTRAKPenelitian ini bertujuan untuk mengisolasi bakteri probiotik dari usus ikan lele dan menguji pengaruh pemberian probiotik dari usus ikan lele terhadap pertumbuhan dan resistensi ikan mas terhadap infeksi Aeromonas hydrophilla. Sumber probiotik diisolasi dari usus ikan lele menggunakan media MRS (de Man Rogosa Sharpe) dan bakteri Aeromonas hydrophilla ditumbuhkan pada media TSA (Tryptic Soy Agar). ikan uji diambil dari Balai Budidaya Air Tawar Tatelu , Provinsi Sulawesi Utara . ikan diaklimatisasi selama seminggu dalam 15 akuarium dengan kepadatan 15 ekor/akuarium dan berat awal rata-rata 5,5 g. Setelah diaklimatisasi ikan diberi pakan yang ditambahkan bakteri probiotik sebagai perlakuan dengan konsentrasi berbeda yaitu 1x109 , 1x108 , 1x107,  1x106 cfu/mL selama empat minggu sebanyak 5% /berat tubuh/hari dengan frekuensi pemberian pakan dua kali sehari yaitu jam 08.00 pagi dan jam 17.00 sore. Setelah diberi perlakuan maka diuji tantang dengan bakteri Aeromonas hydrophilla.  Data yang dikumpulkan terdiri dari laju pertumbuhan harian, pertumbuhan mutlak, efesiensi pakan, konversi pakan dan uji tantang terhadap bakteri patogen. Hasil penelitian mendapatkan bahwa penambahan bakteri probiotik dalam pakan mampu meningkatkan pertumbuhan, efesiensi pakan dan menurunkan konversi pakan (p<0.01). Pertumbuhan, efesiensi pakan dan konversi pakan yang terbaik dicapai pada ikan yang diberi pakan dengan penambahan bakteri probiotik 1x108 cfu/mL.  Kelangsungan hidup ikan mas yang diuji tantang dengan bakteri patogen yang paling tinggi dicapai pada ikan yang diberi pakan 1x108 cfu/mL. Sebagai kesimpulan bahwa bakteri probiotik yang diisolasi dari usus ikan lele berpotensi meningkatkan pertumbuhan, efesiensi pakan, menurunkan konversi pakan serta meningkatkan sistem kekebalan tubuh pada ikan mas.Kata Kunci : Probiotik, Ikan Mas, Aeromonas hydrophilla, Pertumbuhan, Efesiensi Pakan, Konversi Pakan
A Study On Biological Parameters Of Aquaculture Area In Bahoi Village Northern Minahasa Regency, North Sulawesi Rano H. Hontong; Suzanne L. Undap; Henneke Pangkey
Jurnal Ilmiah PLATAX Vol. 7 No. 2 (2019): ISSUE JULY - DECEMBER 2019
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.7.2.2019.26021

Abstract

The aims were to know the biological parameters, identify and analysis of plankton density and diversity in aquaculture area of Bahoi Village. The plankton were sampled from July to September, 2018. The study was carried out monthly in 2 stations by using plankton net. The results showed that the most types of plankton in the waters of Bahoi village were the phytoplankton Bacillariophyceae class with (63 genera) while the type of zooplankton dominated by the genus Acartia sp. Crustaceae class. The highest density of plankton is found at Station 2 (outside the cultivation area) at noon time with a density of 3.18 ind/L, the lowest density is at Station 2 with the morning retrieval time of 1.64 ind/L. Index value of diversity (H '), which is 2.5-2.9, shows the waters of Bahoi village including the medium fertility category and diversity of the moderate plankton. The water quality conditions at the time of overall study can be said to be good and plankton can grow and develop.Keywords : Biological parameters, Plankton, Water quality, Bahoi VillageABSTRAKTujuan penelitian ini adalah untuk mengetahui parameter biologi dan mengidentifikasi jenis-jenis plankton serta menganalisis kepadatan dan keanekaragaman plankton di lokasi budidaya Desa Bahoi.  Sampel plankton diambil sejak bulan Juli sampai September 2018. Pengambilan sampel plankton dengan planktonnet selama tiga bulan pada dua stasiun yang telah ditentukan. Hasil penelitian menunjukkan bahwa jenis plankton terbanyak yang ada di perairan Desa Bahoi adalah fitoplankton kelas Bacillariophyceae dengan (63 genera) sedangkan untuk jenis zooplankton didominasi oleh genus acartia sp kelas Crustaceae. Kepadatan tertinggi plankton terdapat pada stasiun 2 (di luar area budidaya) 3,18 ind/l, kepadatan yang terrendah terdapat pada stasiun 2 dengan waktu pengambilan pagi hari sebesar 1,64 ind/l. Nilai indeks keanekaragaman (H’) yaitu 2.5-2.9, menunjukkan bahwa perairan Desa Bahoi termasuk dalam kategori kesuburan sedang dan keanekaragaman jenis plankton yang sedang. Kondisi kualitas air pada saat penelitian secara keseluruhan dapat dikatakan baik dan plankton dapat bertumbuh dan berkembang.Kata kunci : Parameter Biologi, Plankton, Kualitas Air, Desa Bahoi
Tingkat prevalensi dan intensitas ektoparasit pada benih ikan Nila (Oreochromis niloticus) Prislawati Paputungan; Reni L. Kreckhoff; Reiny A. Tumbol; Ockstan J. Kalesaran; Juliaan Ch. Watung; Suzanne L. Undap
e-Journal BUDIDAYA PERAIRAN Vol. 11 No. 2 (2023): April - Desember
Publisher : Universitas Sam Ratulangi

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Abstract

This study aims to inventory the types of parasites that exist in the Center for Development and Development of Tateli Fish Farming (BP2HPI) Tateli. This research was conducted in April-July 2023 at BP2HPI, Tateli as the location for sampling 30 tilapia (Oreochromis niloticus) seeds randomly in 3 nursery ponds, and then brought to the Laboratory of Aquaculture Technology FPIK Unsrat for parasite observations. Before examining the fish parasites, the sample is put into a bucket filled with water and given aeration so that the fish are still alive during the inspection. In this research activity, several water quality parameters were also measured, namely temperature, pH, and DO in situ. The procedure for examining ectoparasites refers to the procedure according to Kabata (1985). Parasite examination begins with observing the outside of the body, and taking notes if abnormal signs are found such as swelling, bleeding, the presence of black or white spots on the surface of the body, or changes in body color, then the presence of parasites is examined using a microscope with 400x magnification. The examination found 2 types of parasites that infect the seeds of tilapia (Oreochromis niloticus) at the Center for Development and Control of Fish Pests and Diseases (BP2HPI), Tateli are Ttrichodina sp and Gyrodactylus sp. The prevalence of parasites that attack tilapia seeds as a whole reaches 100% which is divided into 90% Trichodina sp and 10%, Gyrodactylus sp. Keywords: parasitic infestation, fish disease, water quality, aquaculture
Fluktuasi parameter kualitas air dan perkembangan flok pada budidaya ikan Nila (Oreochromis niloticus) dengan sistem bioflok di BPBAT Talelu Franklin R. Safsafubun; Suzanne L. Undap; Indra R.N. Salindeho; Novie P.L. Pangemanan; Juliaan Ch. Watung; Henneke Pangkey
e-Journal BUDIDAYA PERAIRAN Vol. 11 No. 2 (2023): April - Desember
Publisher : Universitas Sam Ratulangi

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Abstract

This study aims to determine fluctuations in water quality parameters and flock development in tilapia (Oreochromis niloticus) aquaculture using the biofloc system. The water quality parameters studied were temperature, DO (Dissolved Oxygen), pH, ammonia (NH4), nitrite (NO2), and nitrate (NO3). The research was carried out at the Freshwater Aquaculture Fisheries Center (BPBAT) Tatelu, from May 2023 to June 2023, using the case study method. The average temperature during the study was 27.2oC, DO (5.05 mg/L) and pH (5.40). The average NH4 value was 0.58 mg/L. The results of this study indicated that ammonia began to increase from the first day and reached a peak on day 5 with a value of 0.77 mg/L. The average NO2 value was 1.12 mg/L, The results of this study indicated that the increase in NO2 occurred rapidly from day 5 and reached a peak on day 27 with a value of 1.92 mg/L, then began to decline. The average NO3 value was 25.21 mg/L, the NO3 value increased on the 12th day to a value of 35.1 mg/L, and this value began to stabilize even though there was a little pressure. The highest floc density was on the 34th day with a value of 34 ml/L, the lowest was on the 11th day with a value of 4 ml/L and the average floc density was 23 ml/L. Tilapia culture in the biofloc system had an absolute growth of 57.11 grams, a specific growth ratio of 1.5%, feed conversion (FCR) of 1.2, and survival of 97%. Keywords: Fish cultivation, Oreochromis niloticus, biofloc system
Analisis kandungan nitrogen dan fosfor pada sedimen Danau Tondano di area budidaya Toulimembet Yedieli Telaumbanua; Sipriana S. Tumembouw; Juliaan Ch. Watung; Suzanne L. Undap; Pankie L. Pangemanan; Sammy N.J. Longdong
e-Journal BUDIDAYA PERAIRAN Vol. 11 No. 2 (2023): April - Desember
Publisher : Universitas Sam Ratulangi

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Abstract

The aim of the research was to analyze the nitrogen and phosphorus content in sediments in the cultivation area of Toulimembet Village. This research method is "survey" determining sampling points "purposive sampling" taking into account that the research location is a fish cultivation area with a floating net system, and data is obtained using primary data and secondary data. Primary data collected were in situ measurements of water quality parameters (temperature, turbidity, TDS, pH, DO) in the Toulimembet Village cultivation area and sediment analysis (Nitrogen and Phosphorus) at the Manado Standardization Research Center Laboratory (BARISTAND). Secondary data was obtained from various sources such as journals and previous research reports. Based on research results in Toulimembet Village, Kakas District, Minahasa Regency, North Sulawesi Province, nitrogen (0.78-1.16%), phosphorus (0.04-0.08%), temperature (25.73-27.01°C), turbidity (4.03-4.90 NTU), TDS (0.160-0.164 g/l), pH (7.89-10.52), DO (7. 20-12.67 mg/L), ammonia (0.07 mg/L), phosphate (0.0030-0.0158 mg/L), nitrite (0.069-0.295 mg/L) are still suitable for cultivation activities. Keywords: Fish culture, water quality, floating net cage, eutrophication
Kajian kelayakan kualitas air untuk budidaya ikan sistim kurungan jaring tancap di Kelurahan Urongo Marini Duyoh; Novie P. L. Pangemanan; Diane J. Kusen; Ockstan J. Kalesaran; Suzanne L. Undap; Sipriana S. Tumembouw
e-Journal BUDIDAYA PERAIRAN Vol. 11 No. 2 (2023): April - Desember
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/bdp.v11i2.51791

Abstract

The fishery sector which has great profit prospects can still be developed by cultivating fish better by paying attention to the condition of the water quality. In fish farming, it is very important to study water quality conditions because water quality parameters are a limiting and life-supporting factor for the types of aquatic biota cultivated in a waters including tilapia (Oreochromis niloticus. This research was conducted to assess water quality, both physical, chemical, and aquatic biology of Lake Tondano to support the feasibility test activities of Lake Tondano waters for Cage Netting Cage cultivation media. The research method used was purposive sampling. Primary data comes from primary data which is the result of measurements of physico-chemical parameters of water quality directly in the field (in situ) and supported by secondary data on several physical and chemical parameters of Lake Tondano waters as well as data on water quality of the cultivation media with the Netting Cage system. The physical and chemical parameters of Lake Tondano waters at the three stations were analyzed using the suitability scoring method for the location of Tondano Lake waters to be used as a maintenance medium fish with a Stuck Net Containment system. The results of the study concluded that the physical and chemical quality of water in Urongo waters was suitable for net cage culture. Keywords: physical-chemical parameters, Lake Tondano, aquaculture, Nile tilapia