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Yustina Yustina
Department of Biology Education, Universitas Riau, Pekanbaru 28293, Indonesia
Computer Science & IT Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology

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Observation of growth rate of catfish (Pangasius sp.) against mixed feed fermentation of mustard and cabbage waste flour Yustina Yustina; Sri Wulandari; Oky Priawan
Science, Technology, and Communication Journal Vol. 2 No. 1 (2021): SINTECHCOM Journal (October 2021)
Publisher : Lembaga Studi Pendidikan dan Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v2i1.202

Abstract

A study was conducted to measure the growth rate of catfish (Pangasius sp.) due to feeding on a mixture of fermented mustard and cabbage waste flour (FMCWF). Catfish are distributed in each container per box, consisting of five fish with an initial weight of 3 – 5 grams. During 56 days of cultivation, three times a day were fed with a feeding rate of 5%. The randomized block design method was used as the concept of this research. There were five treatments and each treatment was repeated three times. The type of catfish feed provided consisted of factory feed and its mixture with different percentages of FMCWF: P0 (manufactured feed brand Matahari Sakti); P1 (FMCWF 15%); P2 (FMCWF 30%); P3 (FMCWF 45%); and P4 (FMCWF 60%). Observations were made on several parameters such as absolute weight growth, feed conversion ratio, and water quality. Based on the analysis of variance (ANOVA) test, the results showed that the growth rate of catfish was influenced by FMCWF with a significant effect (p < 0.05). The best growth rate was given to P2 treatment (FMCWF 30%) with an absolute weight growth of 8.11 grams and a feed conversion ratio of 1.5.
Utilizing catfish waste-derived liquid organic fertilizers for sustainable microalgae cultivation Saberina Hasibuan; Yustina Yustina; Resma Wahyuni; Rodesia Mustika Roza
Science, Technology, and Communication Journal Vol. 6 No. 3 (2026): SINTECHCOM Journal (June 2026)
Publisher : Lembaga Studi Pendidikan dan Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v6i3.417

Abstract

Peatlands are important ecosystems in Sumatra and Kalimantan in Indonesia that support the livelihoods of local people especially fisheries. The study investigated the effect of the addition of A. microphylla on water quality parameters in the rearing media of Siamese catfish in peat water to identify the optimal rate of A. microphylla that can enhance water quality and ultimately improve the growth and survival of Siamese catfish in aquaculture systems. The research was a randomized design with 4 treatment levels of A. microphylla with 3 replications, namely AM0 (Control), AM1 (20 g/m2), AM2 (40 g/m2), and AM3 (60 g/m2). The results showed that the best treatment was the AM3. It was able to reduce TSS by 68.5%, TDS by 37.65%, turbidity of 70.5%, and the brightness by 15.58 cm. The treatment improved the pH value of water (4.70 to 6.63), increased the dissolved oxygen content of water (3.30 mg/L to 7.66 mg/L), decreased water-free carbon dioxide (8.00 mg/L to 7.00 mg/L), increased nitrate content in water (0.43 ppm to 16.86 ppm), increased water orthophosphate content (0.64 ppm to 3.52 ppm) and produced an average abundance of plankton of 8461 ind. per L. The favourable condition was able to support the rearing of catfish for 60 days by increasing weight gain (2.39 g per fish), absolute length (2.50 cm per fish), feed efficiency (88.01%) and a high survival rate (93%). The results contribute to the development of efficient and eco-friendly aquaculture practices for fish.
Co-Authors Oky Priawan Resma Wahyuni Rodesia Mustika Roza Saberina Hasibuan Sri Wulandari