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All Journal Jurnal Biologi Tropis Journal of Fish Nutrition
Nurliah
Universitas Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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PENGARUH BAKTERI PROBIOTIK (Lactobacillus plantarum) PADA PAKAN UNTUK PERTUMBUHAN IKAN NILA (Oreochromis niloticus) Dewi Sartika; Nurliah; Bagus Dwi Hari Setyono
Journal of Fish Nutrition Vol. 2 No. 1 (2022): Journal of Fish Nutrition
Publisher : Journal of Fish Nutrition

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (758.441 KB) | DOI: 10.29303/jfn.v2i1.1332

Abstract

This study aims to determine the effect of the probiotic bacteria Lactobacillus plantarum on the growth of tilapia. This research was conducted using an experimental method using Completely Randomized (CRD) with 5 treatments and 3 replications. The treatment given was the administration of probiotic bacteria L. plantarum from different dilutions of 30% of the amount of feed mixed into tilapia feed. The feed used is commercial pellet feed. The treatments are treatment 1 (P1): Administration of probiotic bacteria from a dilution of 10-3, treatment 2 (P2): Administration of probiotic bacteria from a dilution of 10-6, treatment 3 (P3): Administration of probiotic bacteria from a dilution of 10-9, treatment 4 (P4): Administration of probiotic bacteria from a dilution of 10-12, and treatment (P0): without administration of probiotics. Based on the results of research that has been carried out for 45 days, it can be said that treatment 3 (P3): Provision of probiotic bacteria at a dilution of 10-9 gave a significant effect on the growth of tilapia weight, feed conversion ratio, feed efficiency, and digestibility of tilapia feed. However, it did not have a significant effect on the increase in length and life of tilapia.
Zoning Effectiveness of Marine Nature Reserve Conservation Areas (SAP) Raja Ampat Islands Against Coral Reef Protection Faidlul Qodir; Mauludiyah; Dian Sari Maisaroh; Wiga Alif Violando; Ofri Johan; Idris; Nurliah; Saptono Waspodo
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i1.4623

Abstract

Raja Ampat Islands have been designated as a Marine Nature Reserve (SAP) since 2014, and community activity in these waters remains high for tourism, fishing and sea transportation activities. All of these activities have the potential to suppress the condition of the coral reefs there. Therefore, it is necessary to evaluate the effectiveness of zoning in terms of social and ecological indicators. This research was conducted using the Underwater Visual Census (UVC) method for coral reef fish and the Underwater Photo Transect (UPT) method for coral cover at a depth of 5-7 m. The set critical threshold value is used to evaluate the success of the zoning taken by interviewing fishermen. The results of the study found that the core zone had unfavorable conditions compared to the other zones. Based on an analysis of ecological indicators, the percentage of coral cover was only 20.9% and an abundance of reef fish of 28 ind/m2. The results of the social analysis of the community, Waisilip Village has the lowest level of compliance with a value of 56%. Meanwhile, 77% of respondents agree with zoning, and only 19% understand the zoning management system. The management of SAP Raja Ampat can be said to be effective by taking into the ecological and social indicators of the community. Increase in the percentage of coral cover in the core zone (0.2%), utilization zone (3.9%), sustainable fisheries zone (0.8%) and cultivation zone (5.7%). Most fishermen have good insight and concern for coral reefs and other aquatic resources.
Co-Authors Bagus Dwi Hari Setyono Dewi Sartika Faidlul Qodir Idris Maisaroh, Dian Sari Mauludiyah Mauludiyah Ofri Johan Saptono Waspodo Violando, Wiga Alif