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Nunik Cokrowati
University of Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Physics Social Sciences Other

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EFEKTIVITAS PENGGUNAAN JENIS MADU TERHADAP MASKULINISASI IKAN GUPPY (Poecilia reticulata) MELALUI TEKNIK PERENDAMAN INDUK BUNTING Nunik Cokrowati; Nurmaya Safitri; Andre Rachmat Scabra
Jurnal Akuakultur Rawa Indonesia VOL 10, NO 2 (2022): JURNAL AKUAKULTUR RAWA INDONESIA
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jari.v10i2.18942

Abstract

Sex reversal or gender inflection is a technique aimed at causing the male development of the female sex (masculinization) and masculine gender to females. One of the most often employed intricate sex techniques is masculinity. Generally, the production of single male sex cells involves taking advantage of the hormone steroid as well as natural substances. The purpose of the study is to know the effectiveness of a different kind of honey in the inbreeding of a guppy mother stem stem (Poecilia reticulata) with the percentage of male fish. The study was carried out in fish reproductive laboratories, the department of agriculture, the university of Mataram in April-Juni 2022. The study employed experimental methods of a complete random model (ral) with 4 treatments, namely P0 (control), P1 (forest honey), P2 (cattle honey), and P3 (mangrove honey). Treatment is repeated three times each. An analysis of the gender percentage carried with analysis of variance (anova) and Duncan's test. The take notes that the percentage of the male fish in forest honey, cattle honey, and mangrove honey are produced in successive percentage of the male fish at 84%, 83%, and 95%. The results of a 100% survival rate rate on all treatment, the absolute heavy growth shows the same conservative value of.38-0.39g, and the specific growth of weight indicates a value of 2.86-2.87%. It can thus be deduced that treatment with the use of mangrove honey is the treatment of the highest effectiveness in the direction of the guppy (Poecilia reticulata) fish.
Budidaya Rumput Laut Ulva sp. Pada Kepadatan Berbeda Dengan Menggunakan Sistem Aerasi Fajratul Fitri; Nunik Cokrowati; Salnida Yuniarti Lumbessy
Jurnal Media Akuatika Vol 8, No 1 (2023): Januari
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/jma.v8i1.27977

Abstract

Berat bibit awal Ulva sp. merupakan salah satu faktor teknis yang mempengaruhi pertumbuhan, karena berhubungan dengan unsur hara yang diserap. Semakin besar berat bibit maka semakin banyak percabangan sehingga memiliki permukaan yang luas dalam menyerap nutrien. Penelitian ini bertujuan untuk menganalisa pengaruh kepadatan bibit awal yang berbeda terhadap pertumbuhanUlva sp. dengan menggunakan sistem aerasi. Metode penelitian yang digunakan adalah metode eksperimental dengan perlakuan perbedaan padat tebar bibit yaitu kontrol (A) 1 g/L, (B) 1,5 g/L, (C) 2 g/L dan (D) 2,5 g/L dengan 3 kali pengulangan pada setiap perlakuan. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL), dimana data hasil penelitian dianalisa menggunakan ANOVA dengan uji lanjut DUNCAN. Parameter penelitian yang diukur meliputi bobot mutlak, laju pertumbuhan spesifik, lebar lembaran talus, panjang lembaran talus, kandungan klorofil dan kualitas air. Hasil Penelitian menunjukkan bahwa perlakuan kontrol (A) 1 g/L memberikan hasil terbaik dengan rata-rata bobot mutlak sebesar 19 g, laju pertumbuhan spesifik 1.67%, lebar lembaran talus 8.33 cm, panjang lembaran talus 7.83 cm, dan kandungan klorofil-a yaitu 22.30 mg/L. Kesimpulan penelitian ini adalah padat tebar bibit yang berbeda dapat mempengaruhi pertumbuhan Ulva sp. pada budidaya skala laboratorium.Kata Kunci: Aerasi, PadatTebar, Pertumbuhan, Ulva sp.
Profil klorofil selada laut Ulva sp. dengan umur panen yang berbeda pada budidaya terkontrol Zunnuraini Zunnuraini; Nunik Cokrowati; Nanda Diniarti
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.v11i1.47641

Abstract

This study aimed to analyze the growth of sea lettuce Ulva sp. with different harvest ages and the chlorophyll content in sea lettuce Ulva sp. with different harvest ages. The method used was an experimental method using a completely randomized design with a cultivation period of 45 days. The results showed the highest growth of Ulva sp. was in treatment D (40 days) with an average specific growth of 3,7%, absolute growth of 45,33 g, thallus length 5,6 cm, thallus width 8.1 cm, and chlorophyll content of 6,52 mg/l. In treatment B (20 days), the average specific growth was 2,8%, absolute growth was 32 g, thallus length was 4,6 cm, thallus width was 6,2 cm, and chlorophyll content was 6,24 mg/l. In treatment C (30 days) the average specific growth was 1,9%, absolute growth was 21,33 g, thallus length was 3,1 cm, thallus width was 5 cm, and chlorophyll content was 6,06 mg/l. In treatment A (10 days) the average specific growth was 1,5%, absolute growth was 16,33 g, thallus length was 2,7 cm, thallus width was 3,1 cm, and chlorophyll content was 3,78 mg/l. As conclusion, different harvest ages have a significant effect on the amount of chlorophyll content, absolute weight and specific growth rate of Ulva sp. The highest amount of chlorophyll content was found in treatment D of 6,52 mg/L, absolute weight growth of 45,33 g, specific growth rate of 3,7%. Keywords: Ulva sp, photosynthesis, growth, aquaculture
Pertumbuhan Gracilaria sp. yang Dibudidayakan Pada Tambak di Bajo Baru Dompu Ulfa Yulistiana; Ayu Adhita Damayanti; Nunik Cokrowati
Rekayasa Vol 13, No 3: December 2020
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v13i3.9013

Abstract

Gracilaria sp. is a seaweed that produces "agar" and has economic value. Market demand for Gracilaria sp. is quite high but has not yet been fulfilled. Gracilaria sp. has not been widely cultivated in the waters of West Nusa Tenggara Province, including Dompu. If the level of production of Gracilaria sp. high, it can improve the community's economy. So it is necessary to increase cultivation to increase the production of Gracilaria sp. This research aims to study the growth of Gracilaria sp. cultivated with different initial seed weight treatment. The research was conducted in the Bajo Baru pond, Dompu, West Nusa Tenggara. This study used a completely randomized design method consisting of five treatments with three repetitions. The treatments were: treatment A; Gracilaria sp. with initial seed weight of 100 gr (control); treatment B: Gracilaria sp. with an initial seed weight of 375 g; treatment C: Gracilaria sp. with an initial seed weight of 425 g; treatment D: Gracilaria sp. with initial seed weight 475 g; treatment E: Gracilaria sp. with initial seed weight of 575 g. The parameters observed were absolute and daily growth, agar yield, and water quality. Cultivation and parameter observation was carried out for 30 days. Data analysis using ANOVA (Analysis of Variance) and graphs with descriptive analysis. The results showed that the initial seed weight of Gracillaria sp had no significant effect on absolute and daily growth. The best growth was obtained in treatment E (575 g) which gave 740 g absolute growth and 0.052 g daily growth. On the other hand, the yield value for agar shows a decreasing trend when using seeds with a higher initial weight. The yield value for the highest order was 17.56%.
THE EFFECT OF DIFFERENT PLANTING DISTANCES ON THE GROWTH OF Sargassum sp. CULTIVATED AT BOTTOM-OFF IN EKAS BAY, JEROWARU DISTRICT, EAST LOMBOK REGENCY Nunik Cokrowati; Baiq Regia Gemara Putri; Andre Rachmat Scabra
AQUASAINS Vol 11, No 1 (2022)
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v11i1.p%p

Abstract

Sargassum sp. is brown algae which contain bioactive compounds such as fucoidan and alginate. Alginates are widely used in the medical, food and gelling industries and stabilizers. In laboratory experiments, Fucoidan can be used as anti-inflammatory, anti-tumour, and anti-viral. This study aims to analyse the effect of different spacing on the growth of Sargassum sp. using the baseline method in Ekas Bay, Jerowaru District, East Lombok Regency. The method used is an experimental method using a Completely Randomized Design (CRD) with a cultivated period of 30 days. The results showed the growth of Sargassum sp. The highest was in treatment E (40 cm) with an average absolute growth of 628 g, specific growth of 3.76%, number of leaves 7843, number of fruits 7413, with 90% Alginate yield. The lowest growth value was obtained in treatment A (20 cm) with an absolute growth value of 392 g, specific growth of 2.78%, number of leaves 5084, number of fruits 5610 with an alginate yield of 57% with an initial planting weight of 100 g. The conclusion of this research is the different spacing of the seaweed Sargassum sp. using the baseline method in Ekas Bay, Jerowaru District, East Lombok Regency had a significant effect on absolute growth, specific growth rate, and several leaves but not significant on the number of fruits.
Kelangsungan Hidup Rumput Laut Kappaphycus alvarezii Morpotipe Hijau Dan Coklat Yang Dibudidaya Pada Skala Laboratorium Nunik Cokrowati; Baiq Raihanun
Jurnal Media Akuatika Vol 8, No 4 (2023): Oktober
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Rumput laut yang banyak dibudidayakan adalah jenis Kappaphycus alvarezii. K. alvarezii mempunyai kandungan karaginan yang banyak dimanfaatkan sebagai bahan baku dalam industri kosmetik, makanan, pupuk dan juga dalam bidang farmasi. Tujuan penelitian ini adalah untuk menganalisa ketahanan hidup K. alvarezii warna coklat dan warna hijau yang dibudidayakan pada skala laboratorium. Penelitian ini merupakan penelitian eksperimental dengan dua perlakuan dan empat kali ulangan. Perlakuan pertama adalah bibit K. alvarezii morpotipe hijau dan perlakuan kedua adalah bibit K. alvarezii morpotipe. Hasil penelitian ini adalah tingkat kelangsungan hidup K. alvarezii morpotipe hijau yaitu 26,25% lebih tinggi dari morpotipe coklat. Hal tersebut dapat diartikan bahwa K. alvarezii hijau lebih tahan dari tekanan kondisi lingkungan media budidaya. Panjang talus pada akhir penelitian yaitu pada varietas hijau dan coklat rata- rata 8,5 cm. Hal ini dikarenakan rontoknya talus akibat adanya talus yang memutih. Hal tersebut mengakibatkan perubahan warna pada talus menjadi pucat sehingga memperlambat pertumbuhan rumput laut. Jumlah percabangan rumput laut pada varietas hijau dan varietas coklat tidak terlalu berbeda jauh. Namun rata-rata jumlah percabangan pada varietas hijau lebih tinggi yaitu 91,5 cabang sedangkan pada varietas coklat rata-ratanya yaitu 89,75 cabang. Kesimpulan penelitian ini adalah rumput laut K.alvarezii morpotipe hijau dan coklat yang dibudidaya pada substrat yang sama memberikan pengaruh terhadap kelangsungan hidup dan perkembangan jumlah talus, namun tidak memberikan memberikan pengaruh pada pertumbuhan.
Growth Performance of Sargassum cristaefolium in Gerupuk Bay, Central Lombok Nunik Cokrowati; Eka Sunarwidhi; Baiq Raihanun; Ni Kadek Puji Astuti; Muhammad Heri Hariadi; Muhamad Jumat; Dimas Putra Perdana; Bq. Tri Khairina ilhami; Jayusri Jayusri; Dinda Cristasya Waang; Hasriaton Padmi; Nanda Kurniawan
Jurnal Media Akuatika Vol 9, No 1 (2024): Januari
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Sargassum cristaefolium seaweed is a seaweed that has a dominant polysaccharide content including alginate, laminarin, and fucoidan which is usually used in the food, textile, pharmaceutical, agricultural, and cosmetic industries. Many of benefits that S. cristaefolium has, it causes the export volume of seaweed to increase so that indirect production also increases. However, S. cristafolium has not been cultivated on a mass basis in NTB, especially on the island of Lombok. The potential of S. cristaefolium seaweed which is supported by the aquatic environment of Gerupuk Bay which is suitable for cultivation. But at the level of cultivators, what is still a problem is the use of early seaweed seeds. The purpose of this study was to analyze the differences in the growth of S. cristaefolium cultivated with different seed weights. The method used is an experimental method using a Completely Randomized Design (CRD). The treatments in this study consisted of 5 treatments and 4 replications, namely P1 (seedling weight 100 g), P2 (seedling weight 75 g), P3 (seedling weight 50 g), P4 (seedling weight 25 g), P5 (seedling weight 125 g). Data were analyzed using Analysis of variance (ANOVA) and then continued with Duncan's test with a 95% confidence level. The best absolute growth research results were in the P1 treatment (seed weight 100 g) which was 91.25 g. While the best specific growth rate was in treatment P4 (seedling weight 25 g) with a value of 7.84%. This study concludes that different seed weight affects the growth of S. cristaefolium seaweed.
ABUNDANCE INDEX AND COMMUNITY STRUCTURE OF PHYTOPLANKTON IN THE INTEGRATED MARINE AQUACULTURE AREA OF EKAS BAY, WEST NUSA TENGGARA Yuliana Asri; Nunik Cokrowati; Muhammad Sumsanto; Damai Diniariwisan; Septiana Dwiyanti; Wastu Ayu Diamahesa
Jurnal Perikanan Unram Vol 14 No 4 (2024): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v14i4.1256

Abstract

The development of Ekas Bay as a center for integrated aquaculture activities, particularly through the Floating Net Cage (FNC) system, can impact phytoplankton abundance and water fertility. Phytoplankton, a type of plankton capable of photosynthesis, acts as a primary producer and serves as a key food source for fish and lobsters. The presence of phytoplankton is closely related to the fertility levels of waters designated for marine aquaculture. This study aims to determine the composition and abundance of phytoplankton in the waters of Ekas Bay. The research employed purposive sampling, collecting phytoplankton samples from five predetermined stations: three points near FNCs and two points distant from the FNC area. The results indicate that the plankton abundance in the waters of Ekas Bay is categorized as mesotrophic. The highest phytoplankton abundance was recorded at Station V with 9,523 cells/L, while the lowest was at Station II with 2,150 cells/L. Based on station characteristics, Station V is the farthest point from FNCs, whereas Station II contains a high concentration of FNCs. The community structure, as indicated by the H’, E, and D values, suggests that the waters of Ekas Bay remain in a stable condition. Phytoplankton from the class Bacillariophyta was the most commonly found, although no specific genus was dominant.
Co-Authors Alis Mukhlis Aluh Nikmatullah Andre Rachmat Scabra Ayu Adhita Damayanti Ayu Adhita Damayanti Bagus Dwi Hari Setyono Baiq Raihanun Baiq Regia Gemara Putri Bq Tri Khairina Ilhami Bq. Tri Khairina ilhami Damai Diniariwisan Dewi Nur'aeni Setyowati Diamahesa, Wastu Ayu Dimas Putra Perdana Dinda Crista sya Waang Dinda Cristasya Waang Edy Sulman Eka Sunarwidhi Eka Sunarwidhi Prasedya Erwansyah Erwansyah Erwansyah Erwansyah Fajratul Fitri Fariq Azhar Hardawiansyah Hardawiansyah Hasriaton Padmi Heri Hariadi Ifla Afifilah Jayusri Jayusri Jayusri Junaidi, Muhammad Leni Mardiana Lulu Lutfiati Lumbessy, Salnida Yuniarti Mega Selfiaty Muhamad Jumat Muhammad Heri Hariadi Muhammad Jumat Muhammad Junaidi Muhammad Sumsanto Nanda Diniarti Nanda Diniarti Nanda Kurniawan Ni Kadek Puji Astuti Nurmaya Safitri Septiana Dwiyanti Sunaryo Sunaryo Sunaryo Sunaryo Ulfa Yulistiana Wanda Qoriasmadillah Yuliana Asri Zainal Abidin Zunnuraini Zunnuraini