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Gressty Sari Br Sitepu
Universitas Pendidikan Ganesha
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Earth & Planetary Sciences Education Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Other

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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.
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 Abdul Wafi Andayani, Safira Noor Bambang Sutikno Budiarta, I Nyoman Damayanti, Made Lia Dewi Wulandari Dewi, Nyoman Trisna Wahyu Maria Emmanuel, Joy Steven Fain, Hamdanul Gede Iwan Setiabudi Gevbry Ranti Ramadhani Simamora I Gede Wahyu Permana I Nyoman Dodik Prasetia Jasmine Masyitah Amelia Jasmine Masyitha Amelia Joko Santoso Kadek Lila Antara Kadek Yogiyana Made Dwipa Kusuma Maharani Ni Nyoman Dian Martini Siregar, Kelly Aurora Suryani, Kadek Ayu Asih Wini - Trilaksani