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All Journal Jurnal Ilmiah Pertanian Manfish Journal Biosaintifika: Journal of Biology & Biology Education
Azril, Muh.
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences

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Dynamic Modelling Analysis of Vibrio sp. and Plankton Abundance in Intensive Shrimp Pond Ariadi, Heri; Mujtahidah, Tholibah; Tartila, Shobrina Silmi Qori; Azril, Muh.; Ayisi, Christian Larbi
Biosaintifika: Journal of Biology & Biology Education Vol. 16 No. 3 (2024): December 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v16i3.16465

Abstract

Vibrio sp. and plankton are important microorganisms in shrimp pond ecosystems. The research aims to predict the dynamics of Vibrio sp. and plankton abundance in intensive shrimp pond ecosystems based on causal model analysis. The research method used is an ex-pose facto causal design concept with quantitative descriptive data analysis using causal dynamic modeling. The results showed the water quality in the pond has a high correlation, except Vibrio sp. and alkalinity. In the pond ecosystem 24 genus of plankton from 6 classes. Chlorella sp. is the dominant plankton genus with an abundance of 1.00E+05-4.00E+05 cells/ml. Vibrio sp. abundance in ponds ranged from 1.38E+03 - 1.31E+05 CFU/ml. Based on the results of dynamic modelling, the growth pattern of Vibrio sp. lasted for 30 weeks which was divided into 4 growth phases. The conclusion of this study is that Vibrio sp. will dynamically experience a pure growth rate for 30 weeks with details of the initial growth phase (1-7 weeks), logarithmic growth phase (8-14 weeks), exponential phase (15-21 weeks), and growth declination phase (22-30 weeks). The growth phase of Vibrio sp. has a high degree of similarity to the growth pattern of plankton in the pond water ecosystem correlatively. The novelty of this research lies in the discovery of an estimation model for the abundance of Vibrio sp. and plankton during the shrimp farming cycle. This finding can serve as a fundamental reference for farmers to optimize feeding processes and conduct regular siphoning during the peak abundance of Vibrio sp. and plankton.
Optimizing winged-bean meal through oven and autoclave heating as viable alternative for plant-based aquafeed Tartila, Shobrina Silmi Qori; Mujtahidah, Tholibah; Azril, Muh.; Pramudita, Anjali Apta; Septiani, Lusi; Satria, Bagas Putra; Cristanto, Ignatius Abel; Oktavian, Muhammad Abizar Sakti; Risqulloh, Sultan Jibran; Astuti, Santika Dewi
Jurnal Ilmiah Pertanian Vol. 21 No. 2 (2024): Jurnal Ilmiah Pertanian
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/jip.v21i2.17579

Abstract

Winged-bean meal can serve as a substitute for soybean meal in plant-based fish feed, despite its trypsin-inhibitor properties, which can be alleviated through heating processes. This study aimed to explore the potential of winged-bean meal subjected to different heating methods, namely oven (110 °C for 30 minutes) and autoclave (121 °C for 30 minutes), based on proximate analysis and trypsin activity. The study applied three treatments with four replications: oven heating (O), autoclave heating (A), and control (without heating, E). All data were analyzed using analysis of variance and Duncan’s multiple range test to determine the best treatment. Data were also compared to the nutrient requirements of several cultured freshwater fish in Indonesia. Heating treatments improved in vitro trypsin activity (1300 units/O and 1135 units/A vs. 835 units) but reduced protein (29.05±1.96%/A and 31.73±1.52%/O vs. 35.17±0.38%) and moisture contents. Additionally, the O treatment met the standards for aquafeed protein content (27-45%) and potentially fulfilled the protein requirements for catfish (25-40%), Nile tilapia (30-35%), and Java barb (30-32%). Therefore, oven heating presents a viable candidate as an alternative plant-based aquafeed ingredient. Nevertheless, the in vivo application of winged-bean meal as an aquafeed ingredient should be further evaluated to determine whether heating treatment effectively enhances digestive activity, nutrient retention, and growth performance in target fish species.
Evaluasi Suplementasi Kombinasi Minyak Nabati dan Minyak Hewani terhadap Kinerja Reproduksi Awal Ikan Baung (Hemibagrus nemurus) Betina Tartila, Shobrina Silmi Qori; Mujtahidah, Tholibah; Azril, Muh.; Risqulloh, Sultan Jibran; Oktavian, Muhammad Abizar Sakti; Azmi, Rifky Tsabitul; Fatikasari, Amelia
Jurnal Kelautan, Lingkungan, dan Perikanan Vol 7 No 1 (2026): MANFISH JOUNAL
Publisher : Jurusan Ilmu Kelautan dan Perikanan Politeknik Negeri Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31573/manfish.v7i1.1156

Abstract

nabati (minyak ikan dan minyak sawit) dalam pakan yang dapat meningkatkan proses kematangan awal gonad pada calon induk betina ikan beong (206,88±31,84 g; 26,18±2,04 cm). Seluruh ikan betina dipelihara dalam delapan unit keramba jaring berukuran 2×1×1 m³ dengan kepadatan 2 ekor/keramba. Penelitian ini menggunakan metode eksperimen dengan dua perlakuan, yaitu pakan kontrol (tanpa kombinasi minyak ikan dan minyak sawit/K) dan kombinasi minyak ikan serta minyak sawit masing-masing 2% (IS). Parameter yang diamati meliputi: (1) kinerja reproduksi (bobot akhir/Wt, panjang akhir/Pt, konsumsi pakan/JKP, indeks gonadosomatik/GSI, dan indeks hepatosomatik/HSI); (2) profil kimia darah (high density lipoprotein/HDL, trigliserida/TG, kolesterol total/TC, dan glukosa/GLU). Seluruh data dianalisis menggunakan uji t-sampel independen dengan tingkat kepercayaan 95% (p<0,05). Hasil penelitian ini menunjukan bahwa perlakuan IS berbeda nyata dibandingkan perlakuan K pada FI dan Wt (p<0,05), dimana nilai Wt pada perlakuan IS (233±49,82 g) lebih tinggi daripada perlakuan K (179±16,27 g). Namun, nilai JKP pada perlakuan IS (95,5±40,73 g) lebih rendah daripada perlakuan K (169,8±21,82 g; p<0.05). Seluruh parameter profil kimia darah menunjukkan tidak adanya perbedaan nyata (p>0,05), kecuali pada nilai TG, dimana perlakuan IS (94,27±9,76 mg/dL) lebih tinggi daripada perlakuan K (103,08±10,93 mg/dL). Suplementasi pakan berupa minyak ikan (2%) dan minyak sawit (2%) dapat mempercepat tingkat pematangan gonad awal pada calon induk betina ikan beong, berdasarkan peningkatan nilai TG dan bobot akhir dengan tingkat konsumsi pakan yang lebih rendah.
Co-Authors Astuti, Santika Dewi Ayisi, Christian Larbi Azmi, Rifky Tsabitul Cristanto, Ignatius Abel Fatikasari, Amelia Heri Ariadi Mujtahidah, Tholibah Oktavian, Muhammad Abizar Sakti Pramudita, Anjali Apta Risqulloh, Sultan Jibran Satria, Bagas Putra Septiani, Lusi Shobrina Silmi Qori Tartila