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Mulyadi Mulyadi
Department of Aquaculture, Faculty of Fisheries and Marine, Universitas Riau
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Energy Environmental Science Immunology & microbiology Materials Science & Nanotechnology Physics Social Sciences

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Optimalization of Water for Nursery and Rearing of Asian Redtail Catfish (Mystus nemurus C.V) Mulyadi Mulyadi; Niken Ayu Pamukas
Jurnal Natur Indonesia Vol 21, No 2 (2023): October
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.2.109-117

Abstract

Fish culture activities usually release wastes to environments such as faeces, urine, uneaten food and other by-product metabolism activities. For increased water quality, ideally in aquaculture media, various methods could be used, such as filtering techniques and sinking and dissolving methods. Various filter materials could be used to increase water quality, such as silt, gravel, charcoal, coconut shell, palm fiber, and zeoliteThe study on the effect of recirculation systems using various filter materials and aquaponic systems on water quality has been carried out. Several filter materials were used in four kinds of treatment,  namely aquarium using aerators (control), aquarium using silt, gravels and palm fiber (recirculation), aquarium using mustard greens (aquaponic system) and aquarium using spoons (recirculation). The study results showed that different filter materials significantly affected nitrate and nitrite concentration in the catfish culture media. It was invented that the treatment of a recirculation system combined with an aquaponic system could increase water quality parameters such as  CO2 (7.99 - 11.98 mg.L-1), NH3 (0.02 - 0.07 mg.L-1), NO2 (2.43 - 0.02 mg.L-1), NO3 (4.32 - 0.04 mg.L-1) respectively. Still, the other water quality parameters were similar. The best results were achieved at the same treatment, namely absolute growth rates  (4.01 g), daily growth rates  (1.96 %) and survival rates (91.11 %), respectively
Effect of Different Filters on Growth and Survival of Cachama (Colossoma macropomum) in the Recirculation System Nuhaya Rafi Fauzan; Iskandar Putra; Mulyadi Mulyadi
Jurnal Perikanan dan Kelautan Vol. 29 No. 1 (2024): February
Publisher : Faculty of Fisheries and Marine, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.29.1.94-99

Abstract

The recirculation system, in principle, is the reuse of water that has been removed from cultivation activities. Cachama (Colossoma macropomum) is a relatively high economic value fishery commodity. This study aimed to obtain the best filter dose for water quality on the survival of cachama. The experimental method used a completely randomized design with six permitted treatments and three replications. The treatment used was P0 (without filter) with P1 (100% charcoal filter), P2 (100% zeolite filter), P3 (50% charcoal and 50% zeolite filter), P4 (25% charcoal and 75% zeolite filter), and P5 (75% charcoal and 25% zeolite filter) the fish kept for 50 days. The results of this study showed that the best treatment was P4 (25% charcoal and 75% zeolite filter), which resulted in a recent weight growth of 6.12 g, static length growth of 4.86 cm, growth rate specific growth of 2.08%, survival of 100%, and food conversion ratio of 1.95. Providing 25% charcoal and 75% zeolite filters affects water quality, growth, and survival rate.
Optimalization of Water for Nursery and Rearing of Asian Redtail Catfish (Mystus nemurus C.V) Mulyadi Mulyadi; Niken Ayu Pamukas
Jurnal Natur Indonesia Vol. 21 No. 2 (2023): October
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Fish culture activities usually release wastes to environments such as faeces, urine, uneaten food and other by-product metabolism activities. For increased water quality, ideally in aquaculture media, various methods could be used, such as filtering techniques and sinking and dissolving methods. Various filter materials could be used to increase water quality, such as silt, gravel, charcoal, coconut shell, palm fiber, and zeoliteThe study on the effect of recirculation systems using various filter materials and aquaponic systems on water quality has been carried out. Several filter materials were used in four kinds of treatment, namely aquarium using aerators (control), aquarium using silt, gravels and palm fiber (recirculation), aquarium using mustard greens (aquaponic system) and aquarium using spoons (recirculation). The study results showed that different filter materials significantly affected nitrate and nitrite concentration in the catfish culture media. It was invented that the treatment of a recirculation system combined with an aquaponic system could increase water quality parameters such as CO2 (7.99 - 11.98 mg.L-1), NH3 (0.02 - 0.07 mg.L-1), NO2 (2.43 - 0.02 mg.L-1), NO3 (4.32 - 0.04 mg.L-1) respectively. Still, the other water quality parameters were similar. The best results were achieved at the same treatment, namely absolute growth rates (4.01 g), daily growth rates (1.96 %) and survival rates (91.11 %), respectively.
Optimalization of Water for Nursery and Rearing of Asian Redtail Catfish (Mystus nemurus C.V) Mulyadi Mulyadi; Niken Ayu Pamukas
Jurnal Natur Indonesia Vol. 21 No. 2 (2023): October
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.2.109-117

Abstract

Fish culture activities usually release wastes to environments such as faeces, urine, uneaten food and other by-product metabolism activities. For increased water quality, ideally in aquaculture media, various methods could be used, such as filtering techniques and sinking and dissolving methods. Various filter materials could be used to increase water quality, such as silt, gravel, charcoal, coconut shell, palm fiber, and zeoliteThe study on the effect of recirculation systems using various filter materials and aquaponic systems on water quality has been carried out. Several filter materials were used in four kinds of treatment, namely aquarium using aerators (control), aquarium using silt, gravels and palm fiber (recirculation), aquarium using mustard greens (aquaponic system) and aquarium using spoons (recirculation). The study results showed that different filter materials significantly affected nitrate and nitrite concentration in the catfish culture media. It was invented that the treatment of a recirculation system combined with an aquaponic system could increase water quality parameters such as CO2 (7.99 - 11.98 mg.L-1), NH3 (0.02 - 0.07 mg.L-1), NO2 (2.43 - 0.02 mg.L-1), NO3 (4.32 - 0.04 mg.L-1) respectively. Still, the other water quality parameters were similar. The best results were achieved at the same treatment, namely absolute growth rates (4.01 g), daily growth rates (1.96 %) and survival rates (91.11 %), respectively.
Combination of Filter Media with Blood Shells on Water Quality and Growth of Asian Redtail Catfish (Hemibagrus nemurus) in the Recirculation System Karisma Agung; Rusliadi Rusliadi; Mulyadi Mulyadi
Jurnal Perikanan dan Kelautan Vol. 31 No. 2 (2026): June
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.31.2.236-241

Abstract

This study aims to determine the effect of combining blood clam shell (Anadara granosa) filter media on water quality in the recirculation system for Asian Redtail catfish (Hemibagrus nemurus) maintenance. The study was conducted from December 2025 to February 2026 at the Cultivation Technology Laboratory, Faculty of Fisheries and Marine Sciences, Universitas Riau, using a Completely Randomized Design (CRD) experimental method with four treatments and three replications. The treatments consisted of P0 (control without blood clam shell), P1 (150 g/25 L of water), P2 (200 g/25 L of water), and P3 (250 g/25 L of water). The results showed that the use of blood clam shells as a filter medium was able to maintain water quality during cultivation, with a temperature range of 24–28.6°C, pH 2.16–7.94, DO 4.96–6.47 mg/L, TDS 22–1038 mg/L, ammonia 0.015–1.429 mg/L, and nitrate 0.0604–21.2729 mg/L. The best treatment was obtained at P3, with a final fish length of 16.8 cm, SGR of 3.60%, feed efficiency of 93.45%, and the lowest FCR of 1.07. The fish survival rate ranged from 87–96%.
Combination of Filter Media with Blood Shells on Water Quality and Growth of Asian Redtail Catfish (Hemibagrus nemurus) in the Recirculation System Karisma Agung; Rusliadi Rusliadi; Mulyadi Mulyadi
Jurnal Perikanan dan Kelautan Vol. 31 No. 2 (2026): June
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.31.2.236-241

Abstract

This study aims to determine the effect of combining blood clam shell (Anadara granosa) filter media on water quality in the recirculation system for Asian Redtail catfish (Hemibagrus nemurus) maintenance. The study was conducted from December 2025 to February 2026 at the Cultivation Technology Laboratory, Faculty of Fisheries and Marine Sciences, Universitas Riau, using a Completely Randomized Design (CRD) experimental method with four treatments and three replications. The treatments consisted of P0 (control without blood clam shell), P1 (150 g/25 L of water), P2 (200 g/25 L of water), and P3 (250 g/25 L of water). The results showed that the use of blood clam shells as a filter medium was able to maintain water quality during cultivation, with a temperature range of 24–28.6°C, pH 2.16–7.94, DO 4.96–6.47 mg/L, TDS 22–1038 mg/L, ammonia 0.015–1.429 mg/L, and nitrate 0.0604–21.2729 mg/L. The best treatment was obtained at P3, with a final fish length of 16.8 cm, SGR of 3.60%, feed efficiency of 93.45%, and the lowest FCR of 1.07. The fish survival rate ranged from 87–96%.
The Effect of Rabal Probiotic Supplementation at Different Doses on the Growth and Survival of Striped Catfish (Pangasianodon hypopthalmus) using a Recirculation System Citra Taulani; Mulyadi Mulyadi; Iskandar Putra
Jurnal Perikanan dan Kelautan Vol. 31 No. 1 (2026): February
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.31.1.143-151

Abstract

Striped catfish is a consumable fish with a good selling price and is a leading export commodity in Indonesia. Striped catfish (Pangasianodon hypopthalmus) often experience slow growth due to several factors that affect metabolic efficiency and nutrient intake. This study aims to determine the optimal dose of rabal probiotics to improve the growth and survival of catfish using a recirculation system. This study was conducted from April to June 2025 for 50 days at the Aquaculture Technology Laboratory, Faculty of Fisheries and Marine, Universitas Riau. The method used was an experiment with a completely randomized design (CRD), using four treatments (P1 = control, P2 = Rabal probiotic 30 ml/100g feed, P3 = Rabal probiotic 35 ml/100g feed, P4 = Rabal probiotic 40 ml/100g feed) and three replicates. The results showed that administering Rabal probiotics at different doses affected the growth and survival of P. hypophthalmus in including average weight and length growth, specific growth rate, feed efficiency, feed conversion ratio, and survival. The best treatment was found in treatment P4 (40 ml/100 g feed), which showed significant growth (P<0.05), namely absolute length of 3.72 cm, absolute weight of 6.74 g, specific growth rate of 2.08%, FCR value of 1.43, feed efficiency of 69.93%, and survival rate of 85%.
The Effect of Rabal Probiotic Supplementation at Different Doses on the Growth and Survival of Striped Catfish (Pangasianodon hypopthalmus) using a Recirculation System Citra Taulani; Mulyadi Mulyadi; Iskandar Putra
Jurnal Perikanan dan Kelautan Vol. 31 No. 1 (2026): February
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.31.1.143-151

Abstract

Striped catfish is a consumable fish with a good selling price and is a leading export commodity in Indonesia. Striped catfish (Pangasianodon hypopthalmus) often experience slow growth due to several factors that affect metabolic efficiency and nutrient intake. This study aims to determine the optimal dose of rabal probiotics to improve the growth and survival of catfish using a recirculation system. This study was conducted from April to June 2025 for 50 days at the Aquaculture Technology Laboratory, Faculty of Fisheries and Marine, Universitas Riau. The method used was an experiment with a completely randomized design (CRD), using four treatments (P1 = control, P2 = Rabal probiotic 30 ml/100g feed, P3 = Rabal probiotic 35 ml/100g feed, P4 = Rabal probiotic 40 ml/100g feed) and three replicates. The results showed that administering Rabal probiotics at different doses affected the growth and survival of P. hypophthalmus in including average weight and length growth, specific growth rate, feed efficiency, feed conversion ratio, and survival. The best treatment was found in treatment P4 (40 ml/100 g feed), which showed significant growth (P<0.05), namely absolute length of 3.72 cm, absolute weight of 6.74 g, specific growth rate of 2.08%, FCR value of 1.43, feed efficiency of 69.93%, and survival rate of 85%.
Co-Authors Citra Taulani Iskandar Putra Iskandar Putra Karisma Agung Niken Ayu Pamukas Nuhaya Rafi Fauzan Rusliadi Rusliadi