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All Journal Jurnal Sumberdaya Akuatik Indopasifik Asian Journal of Aquatic Sciences
Davinci, Leonardo
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Environmental Science

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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.
EFFECTS OF Bacillus sp PROBIOTICS ON GROWTH AND SURVIVAL OF Carassius auratus IN URBAN FISH FARMING Syakir, Muhammad Sabiq; Mulyani, Yuniar; Rostika, Rita; Haetami, Kiki; Davinci, Leonardo; 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.8.2.214-222

Abstract

This study aims to determine the optimum density of Bacillus sp. bacteria applied to feed to increase the growth of C. auratus maintained in a fish farming system in an 80 L bucket. As a form of urban farming, this research was conducted in the yard of Building 1 of the Faculty of Fisheries and Marine Sciences, UNPAD. This study used an experimental method with a Completely Randomized Design model consisting of 4 treatments and three replications, namely treatment A (control), treatment B (Bacillus sp 106 CFU/mL), treatment C (Bacillus sp. 108 CFU/mL), and treatment D (Bacillus sp 1010 CFU/mL). Observations were made for 60 days. Observation parameters were weight growth, length growth, specific growth rate, feed efficiency, survival, and water quality. The results of this study indicate that treatment C (Bacillus sp 108 CFU/mL) was the most effective in increasing the growth of C. auratus, as seen from the absolute weight growth of 61.20 g, absolute length growth of 1.30 cm, specific growth rate of 0.77%/day, feed efficiency of 38%, and fish survival rate of 96% which were significantly different compared to the others.
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
Co-Authors Karsih, Okta Rizal Kiki Haetami Nasita, Abian Surya Priowirjanto, Gatot Hari Rita Rostika Ronal Kurniawan Syakir, Muhammad Sabiq Yuniar Mulyani Zidni, Irfan