Article Per Year (5 Year)
p-Index From 2020 - 2025
0.882
P-Index
This Author published in this journals
All Journal Jurnal Sumberdaya Akuatik Indopasifik Asian Journal of Aquatic Sciences Barakuda 45 Jurnal Ruaya : Jurnal Penelitian dan Kajian Ilmu Perikanan dan Kelautan Research Horizon
Priowirjanto, Gatot Hari
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Health Professions Immunology & microbiology Law, Crime, Criminology & Criminal Justice Social Sciences Veterinary

Published : 5 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 5 Documents
Search

 1 
Hibridisasi ikan koi (Cyprinus rubrofuscus) dan ikan kaviat (Barbonymus schwanenfeldii) dengan menggunakan pemijahan buatan Nasita, Abian Surya; Rostika, Rita; Priowirjanto, Gatot Hari; Davinci, Leonardo
Jurnal Sumberdaya Akuatik Indopasifik Vol 9 No 1 (2025): Februari
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46252/jsai-fpik-unipa.2025.Vol.9.No.1.506

Abstract

Fish hybridization is the process of crossing two different fish species to produce offspring that have characteristics of both parents. The main purpose of hybridization is usually to combine superior traits from both species, such as faster growth, disease resistance, or improved meat quality. The experimental design used in this study was a completely randomized design (CRD) with 2 treatments and each treatment consisted of 3 replicates. The treatments were as follows: P1 = Koi X Koi Fish Hatchery (control), P2 = Koi X Kaviat Fish Hatchery. The results showed that the pH value in borehole water quality was 7.89 with Kohaku broodstock producing fecundity of 640 eggs, obtained an average Fertilization Rate (FR) of 17.29% resulting from the average of each egg sample calculation. The highest number of fertilized eggs was found in the PIU1 treatment which was 1470 eggs and the average Hatching Rate (HR) was 49.35%. The conclusion of this study is that hybridization between Koi and Kaviat fish can produce good potential performance based on water quality that can be maintained well with test parameters seen from fecundity, FR, HR, Length Growth, and good Survival Rate (SR).  Superior fecundity and quality in the hybridization process between koi and caviat fish can occur well if several environmental factors such as temperature and pH are still on an optimal scale.
The Effect of Different Feeding on The Growth and Colour Brightness of Glofish Dewi, Aisah Mustika; Rostika , Rita; Priowirjanto, Gatot Hari; Zidni, Irfan
Research Horizon Vol. 5 No. 2 (2025): Research Horizon - April 2025
Publisher : LifeSciFi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54518/rh.5.2.2025.546

Abstract

This study aims to evaluate the effectiveness of different types of feed, namely natural the growth and color brightness of GloFish Starfire Red. Achieving optimal color brightness and growth is essential in ornamental fish cultivation, as these factors directly impact the marketability and economic value of the fish. The research employed a Completely Randomized Design (CRD) with four treatments each replicated three times to ensure the validity of results. The parameters measured in this study included absolute weight growth, absolute length increase, and brightness in color. Color brightness was analyzed using a digital visual comparison tool to ensure objective measurement. The findings revealed that natural feed significantly enhanced both weight and length growth when compared to artificial feed. Furthermore, fish that were fed with Chironomidae exhibited a more pronounced improvement in color brightness than those subjected to other treatments. These results suggest that specific types of natural feed may offer superior benefits over artificial feed in promoting both aesthetic and physical development in ornamental fish like Glofish Starfire Red.
Comparison Between Feeding Bloodworms And Artificial Feed On The Rate Of Growth Of Nirwana Fish (Oreochromis Niloticus) In Tanjungsari, West Java Rosita, Eros; Rostika, Rita; Priowirjanto, Gatot Hari; Grandiosa, Roffi
Barakuda 45: Jurnal Ilmu Perikanan dan Kelautan Vol 7 No 2 (2025): November
Publisher : Fakultas Perikanan dan Ilmu Kelautan Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/barakuda45.v7i2.653

Abstract

The growth of Nirwana tilapia (Oreochromis niloticus) is strongly influenced by feed and environmental conditions in aquaculture systems. In Indonesia, tilapia productivity is often constrained by feed efficiency and fluctuating water quality. Natural feed such as bloodworms (Chironomus sp.) contains high protein levels that support length growth, while pellets provide complete nutrients for weight gain. This study aimed to evaluate the effects of bloodworms, pellets, and their combination on the growth performance of Nirwana tilapia fingerlings, as well as on water quality (temperature, pH, dissolved oxygen, and ammonia). A Completely Randomized Design (CRD) was applied with three treatments: A (15% bloodworms), B (5% pellets), and C (a combination of 7.5% bloodworms + 2.5% pellets), each with four replications. The fingerlings measured 3–4 cm and were approximately two months old, reared over a period of 50 days. The results showed that all treatments led to increases in weight and length; however, based on analysis of variance (ANOVA), there were no significant differences (p > 0.05) in all growth parameters: weight gain (2.20–2.22 g), length gain (1.32–1.48 cm), specific growth rate (2.41–2.66%/day), daily weight gain (2.73–2.85%/day), and daily length growth (0.0196–0.0210 cm/day). Descriptively, treatment B yielded the highest weight, while treatment A had the highest daily length growth. Water quality remained within optimal ranges (25.5°C temperature, pH 8.2–8.3, DO 4.5–4.7 mg/L, ammonia 0.00–0.01 mg/L). Bloodworms were more effective in stimulating length growth, whereas the feed combination was more efficient in increasing body weight. This study contributes to the development of alternative feed formulations and provides practical recommendations to enhance aquaculture productivity efficiently, sustainably, and in an environmentally friendly manner.
HYBRIDISATION OF FEMALE KOI (Cyprinus rubrofuscus) AND MALE KAPIAT (Barbonymus schwanenfeldii) WITH ARTIFICIAL SPAWNING IN KAMPAR DISTRICT, RIAU Nasita, Abian Surya; Rostika, Rita; Priowirjanto, Gatot Hari; Zidni, Irfan; Davinci, Leonardo; Kurniawan, Ronal; Karsih, Okta Rizal
Asian Journal of Aquatic Sciences Vol. 8 No. 2 (2025): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.8.2.300-309

Abstract

This study aims to evaluate the potential for hybridisation between female koi (Cyprinus rubrofuscus) and male kapiat (Barbonymus schwanenfeldii) through artificial spawning. The study was conducted at Kampar Ornamental Fish, Kampar District, Riau Province. The method used was a Completely Randomized Design (CRD) with two treatments: P1 (koi × koi) as the control, and P2 (koi × kapiat) as the hybrid treatment, each with three replicates. The parameters observed included fecundity, fertilisation rate (FR), hatching rate (HR), absolute length growth, and survival rate (SR). The results showed that hybridisation produced promising performance in terms of FR (21.99%), HR (55.02%), and SR (41.6%). In conclusion, hybridisation between koi and kapiat fish has the potential to produce superior varieties, although attention must be paid to environmental factors such as temperature and pH
PARAMETER FEED CONVERTION RATIO PADA BUDIDAYA IKAN LELE (Clarias sp.) DI KOLAM DENGAN pH RENDAH BERBASIS BIOFLOK DI DESA APUNG KABUPATEN BULUNGAN, PROVINSI KALIMANTAN UTARA Aini, Nurul; Rostika, Rita; Priowirjanto, Gatot Hari; Ikhsan, Muhamad
Jurnal Ruaya : Jurnal Penelitian dan Kajian Ilmu Perikanan dan Kelautan Vol 12 No 2 (2024): Jurnal Ruaya : Jurnal Penelitian dan Kajian Ilmu Perikanan dan Kelautan
Publisher : UNIVERSITAS MUHAMMADIYAH PONTIANAK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29406/jr.v12i2.6629

Abstract

Tujuan penelitian ini adalah untuk mengetahui proses budidaya sistem bioflok melalui penghitungan FCR dan parameter pertumbuhan ikan lele di perairan pH rendah. Sistem budidaya ikan di bioflok telah dikenal bermanfaat bagi budidaya ikan. Apabila dalam sistem budidaya padat tebar terlalu tinggi maka dapat dihasilkan limbah (ammonia) yang tinggi pula. Selain itu, padat tebar yang tinggi juga dapat menghabiskan pakan sekitar 70% dari biaya operasional dan mempengaruhi nilai FCR (Feed Convertion Ratio). Untuk meminimalisasi kondisi tersebut dilakukan salah satu inovasi yaitu budidaya sistem bioflok. Sistem ini mampu untuk memperbaiki kualitas air dan mengurangi biaya pengeluaran pemberian pakan serta menurunkan nilai FCR (Feed Convertion Ratio). Kondisi balita stunting di Indonesia masih tinggi yaitu mencapai 30,8% yang disebabkan kekurangan protein dan kalsium. Daging ikan lele dipercaya mampu mengatasi permasalahan tersebut. Agar balita di Indonesia mendapat pemenuhan gizi untuk mengurangi stunting maka pembudidaya harus mampu memproduksi ikan lele yang tinggi. Telah dilakukan pengamatan terhadap perkembangan bobot ikan selama bulan Oktober 2023 – Desember 2023 pada kolam pH rendah berbasis bioflok di Desa Apung, Kabupaten Bulungan. Parameter yang diamati pada penelitian ini meliputi, pertumbuhan bobot mutlak, rasio konversi pakan, dan kelulushidupan, pada kondisi pH rendah (4 – 6) menggunakan budidaya sistem bioflok. Hasil pengamatan menunjukkan nilai pertumbuhan bobot mutlak tertinggi 32 gram dan terendah 3 gram, nilai Feed Convertion Ratio (FCR) atau rasio konversi pakan sebesar 0,8 Survival Rate (SR) atau kelulushidupan sebesar 96,2%.
Co-Authors Aini Nurul Davinci, Leonardo Dewi, Aisah Mustika Karsih, Okta Rizal Muhamad Ikhsan Nasita, Abian Surya Rita Rostika Roffi Grandiosa Ronal Kurniawan Rosita, Eros Rostika , Rita Zidni, Irfan