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All Journal Jurnal Teknologi Perikanan dan Kelautan Biospecies BULETIN OSEANOGRAFI MARINA Jurnal Pendidikan Biologi Undiksha Wahana Matematika dan Sains Journal of Marine Research Jurnal Sains dan Teknologi Aquasains : Jurnal Ilmu Perikanan dan Sumberdaya Perairan Samakia: Jurnal Ilmu Perikanan Jurnal Pendidikan dan Konseling Journal of Tropical Marine Science PENA AKUATIKA : JURNAL ILMIAH PERIKANAN DAN KELAUTAN Jurnal Perikanan
Jasmine Masyitha Amelia
Universitas Pendidikan Ganesha
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Earth & Planetary Sciences Education Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Library & Information Science Mathematics Social Sciences Other

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THE EFFECT OF DIFFERENT DOSES OF Bacillus sp. PROBIOTICS ON THE SURVIVAL RATE OF WHITE SNAPPER (Lates calcarifer) LARVAE Dewita Sari, Ida Ayu Sawitri; Swasta, Ida Bagus Jelantik; Amelia, Jasmine Masyitha
Aquasains: Jurnal Ilmu Perikanan dan Sumberdaya Perairan Vol. 14 No. 1 (2025): November 2025
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v13i1.10743

Abstract

This study aims to analyze the effect doses of Bacillus sp. Probiotics on the survival rate of white snapper (Lates calcarifer) larvae.  The research was conducted at the Gondol Research Institute for Mariculture, Bali, over a 20-day period using a Completely Randomized Design (CRD) with three treatments and three replications: P0 (control, without probiotics), P1 (3 mg/L), and P2 (5 mg/L). Observed parameters included water quality (nitrate, nitrite, ammonia, phosphate, temperature, pH, salinity, DO), total bacterial count (TBC), survival rate (SR), larval length, and hatching rate (HR). The results showed that the administration of Bacillus sp. probiotics had a significant effect on the survival rate of white snapper larvae (p < 0.05). Based on ANOVA, there were significant differences in SR between treatments. The Bonferroni post hoc test revealed that treatment P2 (5 mg/L) was significantly different from both the control (P0) and P1 (3 mg/L), with P2 producing the highest average SR of 84%, compared to P1 at 70.3% and the control at 50.3%. Meanwhile, probiotic administration did not have a significant effect (p > 0.05) on water quality parameters or larval length. The highest larval length was also recorded in treatment P2, with an average of 1.5 cm on day 20. The use of probiotics contributed to the reduction of toxic compounds such as nitrate, nitrite, and ammonia, and helped stabilize the rearing water environment. Based on these results, it can be concluded that the administration of Bacillus sp. probiotics at a dose of 5 mg/L is the optimal dosage for improving the survival rate of white snapper larvae and maintaining the quality of the aquaculture environment.
THE EFFECT OF FERMENTATION TIME OF PAPAYA LEAVES (Carica papaya) ON THE GROWTH AND SURVIVAL RATE OF NILE TILAPIA (Oreochromis niloticus) Emmanuel, Joy Steven; Prasetia, I Nyoman Dodik; Amelia, Jasmine Masyitha; Sitepu, Gressty Sari Br
SLOT777 : SITUS SLOT GACOR MALAM INI TERBAIK DAN BOCORAN SLOT THAILAND RESMI 2026 Vol 16 No 1 (2026): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v16i1.2152

Abstract

Tilapia (Oreochromis niloticus) aquaculture has high economic value and rapid growth; however, the high cost of commercial feed necessitates the use of more economical and nutritionally adequate alternative feed ingredients, such as fermented papaya leaves (Carica papaya). This study aimed to evaluate the effect of different fermentation durations of papaya leaves in commercial feed on the growth and survival rate of tilapia and to determine the optimal fermentation time. This study employed an experimental method using a Completely Randomized Design (CRD) consisting of four treatments and three replications: treatment A (control without fermentation), treatment B (3 days fermentation), treatment C (5 days fermentation), and treatment D (7 days fermentation). Tilapia fingerlings measuring ±5–7 cm with an initial weight of ±3–4 g were reared for 30 days at a stocking density of 20 fish per tank. The observed parameters included weight gain and survival rate, while the water quality parameters measured were temperature, pH, dissolved oxygen (DO), and ammonia. The data were analyzed using a One-Way ANOVA test followed by Duncan’s multiple range test. The results showed that the addition of fermented papaya leaves had a significant effect (P < 0.05) on the weight gain of tilapia, but no significant effect (P > 0.05) on the survival rate. The best treatment was obtained at 7 days of fermentation, with an average weight gain of 19.53 g and a survival rate of 100%. Therefore, a fermentation duration of 7 days for papaya leaves in commercial feed is considered the most optimal time to enhance the growth of tilapia without affecting their survival rate.
Co-Authors Dewi Wulandari Dewi Wulandari Dewita Sari, Ida Ayu Sawitri Emmanuel, Joy Steven Fain, Hamdanul Gede Iwan Setiabudi Gressty Sari Br Sitepu Gressty Sari Br Sitepu I Gede Iwan Setiabudi I Nyoman Dodik Prasetia I Nyoman Suardana Ida Bagus Jelantik Swasta Kadek Lila Antara Kadek Lila Antara Kadek Yogiyana Lisna, Lisna Luh Komang Galuh Somia Antari Made Dwipa Kusuma Maharani Mia Andriani Nelwida Nelwida Ni Luh Putu Ananda Saraswati Ni Nyoman Dian Martini Ni Putu Indah Swardiani Ni Wayan Widya Astuti Noferdiman Noferdiman Paramitha, Komang Putri Regina Revis Asra Rismayanti, Ni Luh Putu Sari, Susi Puspita Sitepu, Gressty Sari br. Susi Puspita Sari Swardiani, Ni Putu Indah Syahputro, Ichsan TRI PRABOWO Vincentia, Agnes Wulandari, Putu Desi Kusuma