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INDONESIA
Aquasains : Jurnal Ilmu Perikanan dan Sumberdaya Perairan
Published by Universitas Lampung
ISSN : 2301816X     EISSN : 25797638     DOI : -
Core Subject : Education,
Other
Arjuna Subject : -
Articles 5 Documents
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Search results for , issue "Vol. 14 No. 1 (2025): November 2025" : 5 Documents clear
ANALYSIS OF THE ADDITION OF COMMERCIAL ORGANIC SULFUR COMPOUNDS AT DIFFERENT DOSES ON THE GROWTH RATE AND SURVIVAL RATE OF BARRAMUNDI (Lates calcarifer) Wulandari, Putu Desi Kusuma; Sitepu, Gressty Sari br.; 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.v13i1.10567

Abstract

Barramundi (Lates calcarifer) is a euryhaline carnivorous fish species. The nursery phase often poses a major challenge in its aquaculture development. Common issues at this stage include stress-prone fry, feed residues that degrade water quality, high stocking densities, disease outbreaks, and low feed quality, which can lead to nutrient deficiencies and mortality. A potential solution is supplementing feed with commercial organic sulfur compounds. These compounds are chemical groups containing sulfur atom chains and naturally occur in garlic. This research uses an experimental method with a Completely Randomized Design (CRD), consisting of 4 treatments and repeated 3 times. The treatments consisted of P0 (Control), P1 (Commercial organic sulfur compounds at 1 ml/kg), P2 (Commercial organic sulfur compounds at 3 ml/kg), P3 (Commercial organic sulfur compounds at 5 ml/kg). The experiment was conducted over 25 days. Data analysis was performed using One Way ANOVA with Tukey’s post-hoc test. The results showed that barramundi (L. calcarifer) fed with P1 (1 ml/kg organic sulfur compound supplementation) exhibited the best growth performance with absolute length growth (5.79 cm), absolute wight growth (4.96 g), specific growth rate (0,1985%). However, the supplementation had no significant effect on survival.
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.
RESIDUE ANALYSIS IN VANNAMEI SHRIMP (Litopenaeus vannamei) AQUACULTURE IN TUBAN REGENCY Putri, Ardiani Utomo; Yudasmara, Gede Ari; Prasetia, I Nyoman Dodik
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.v13i1.10897

Abstract

Food safety is a crucial aspect of vannamei shrimp (Litopenaeus vannamei) aquaculture, particularly regarding the use of chemicals that may leave harmful residues. This study aims to analyze the compliance of chemical usage in vannamei shrimp farming in Tuban Regency with food safety standards. Data were collected through interviews with farmers and fish health analysts, as well as laboratory testing of shrimp samples from several pond locations. The analysis results showed that all samples from the tested sites were compliant, meaning they met the permitted residue limits. Therefore, it can be concluded that shrimp farming practices in this region have been carried out responsibly and in accordance with prevailing safety standards. This study may serve as a reference for the development of guidance and monitoring efforts toward sustainable shrimp farming in other regions.
THE EFFECT OF ADDING VITAMIN C TO COMMERCIAL FEED ON THE GROWTH AND SURVIVAL OF CANTANG GROUPER FISH Dewi, Nyoman Trisna Wahyu Maria; Sitepu, Gressty Sari Br; Antara, Kadek Lila
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.v13i1.11000

Abstract

This study was conducted to scientifically evaluate the effect of vitamin C supplementation in commercial feed on the growth performance and survival rate of cantang grouper (Epinephelus fuscoguttatus × E. lanceolatus), a high-value aquaculture commodity in Indonesia. The experimental design employed was a Completely Randomized Design (CRD) with three treatments: commercial feed without vitamin C (control), feed supplemented with 20,000 ppm of vitamin C, and feed supplemented with 40,000 ppm of vitamin C, each with three replicates. The key parameters observed included weight gain, specific growth rate (SGR), and survival rate (SR) of the fish during a 30-day rearing period. The results revealed that the addition of vitamin C to the commercial feed had a statistically significant effect on both weight gain and SGR (p < 0.05), where the 40,000 ppm treatment produced the highest mean weight gain (7.12 grams) and SGR value (0.0765%). Although survival rate did not differ significantly among treatments (p > 0.05), the group receiving 40,000 ppm of vitamin C still achieved the highest survival rate of 100%. Water quality parameters, including temperature, pH, salinity, dissolved oxygen, and ammonia, remained within optimal ranges throughout the experiment in accordance with marine aquaculture standards. Based on these findings, it can be concluded that vitamin C supplementation, particularly at a concentration of 40,000 ppm, is highly effective in promoting growth performance and maintaining high survival rates of cantang grouper under controlled aquaculture conditions.
EVALUATION OF THE CULTURE PERFORMANCE OF VANNAMEI SHRIMP (LITOPENAEUS VANNAMEI) IN AN INTENSIVE FERMENTATION-BASED SYSTEM OF CV 58 IN NORTH BALI Manurung, Vetricia Monalisa; Martini, Ni Nyoman Dian; Yudasmara, Gede Ari
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.v13i1.11257

Abstract

Intensive vannamei shrimp (Litopenaeus vannamei) farming using a fermentation-based system offers an innovative solution to environmental management and production efficiency. This study was conducted over one cultivation cycle (80 days) in six ponds operated by CV Tambak 58, North Bali, integrating periodic probiotic fermentation. Key parameters evaluated included growth (ABW, ADG), feed efficiency (FCR), survival rate (SR), water quality, and microbiological stability. Results showed high productivity (up to 2.53 kg/m²), low FCR (1.13–1.40), and SR >85%, accompanied by stable planktonic and microbial communities. These findings indicate that fermentation-based systems reduce environmental stress and disease risks while enhancing the sustainability of intensive shrimp aquaculture

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