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All Journal Jurnal Ilmu-Ilmu Perikanan dan Budidaya Perairan Prosiding Universitas PGRI Palembang Pendas : Jurnah Ilmiah Pendidikan Dasar Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam RESLAJ: Religion Education Social Laa Roiba Journal Komputasi : Jurnal Ilmiah Ilmu Komputer dan Matematika
Syaeful Anwar
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Religion Agriculture, Biological Sciences & Forestry Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Mathematics Physics Social Sciences Other

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PEMANFAATAN FERMENTASI CUCIAN AIR BERAS PADA KULTUR DAPHNIA MAGNA SEBAGAI PAKAN ALAMI Karlus Hubertus Atok; Regil Kentaurus Harries; Syaeful Anwar
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 11 No. 2 (2026): Volume 11 No. 02, Juni 2026.
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

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Abstract

Because of its high nutritional value and ease of digestion by fish, Daphnia magna is widely used in aquaculture. The goal of this final practical work was to study how to cultivate Daphnia magna as a natural feed using organic fertilizer and to measure the population growth during the maintenance period. The activity took place at the Kupang State Agricultural Polytechnic for 17 days using a 500-liter fiber tank. The organic fertilizer used as a nutrient source in the culture medium was made up of fermented rice-washing water and fish pellets. Dengan menggunakan metode volumetik, populasi Daphnia magna diamati. Di sisi lain, kualitas air dipantau melalui pengukuran temperatur, pH, dan dissolved oxygen (DO). The findings demonstrated that the Daphnia magna culture method included tank preparation, water filling and sedimentation, fermentation preparation, stocking, maintenance, and harvesting. The starting population of 3,000 people grew steadily, peaking at 516,500 on day 15 before declining to 416,500 on day 17. Temperatures between 27.7 and 28.5°C, pH levels between 7.1 and 7.9, and dissolved oxygen concentrations between 4.8 and 6.5 mg/L were all within acceptable bounds during the maintenance period.
PERBEDAAN BERAT RUMPUT LAUT (Kappaphycus alvarezii) VARIAN COKLAT DAN HIJAU MENGGUNAKAN METODE LONGLINE DI PESISIR PANTAI PASIR PANJANG, KOTA KUPANG Simplisius Vian Ney; Daniel Candido Da Costa Soares; Syaeful Anwar
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 11 No. 2 (2026): Volume 11 No. 02, Juni 2026.
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v11i2.57661

Abstract

This study aimed to analyze the differences in weight growth between brown and green variants of Kappaphycus alvarezii cultivated using the long-line method in the coastal waters of Pasir Panjang Beach, Kupang City. This experimental study was conducted in response to the need to restore seaweed cultivation productivity following the impact of Cyclone Seroja and to identify the most suitable variety for cultivation in local waters. The experimental organisms consisted of brown and green seaweed variants with a uniform initial weight of 150 g per planting point. Cultivation was carried out using the long-line method with a planting distance of 25 cm between seedlings and a maintenance period of 45 days. The main parameters observed included absolute weight gain, Specific Growth Rate (SGR), and supporting water quality parameters such as temperature, salinity, and pH. Descriptive results showed that the brown variant achieved an average final weight of 556.5 g, while the green variant reached an average final weight of 552.5 g. Inferential statistical analysis using an Independent Samples t-Test yielded a calculated t-value of 0.138 with 18 degrees of freedom (df) and a significance value (p-value) of 0.89177. Since the significance value was much higher than the 0.05 significance level (p > 0.05), the null hypothesis (H₀) was accepted. These findings indicate that there was no statistically significant difference in weight growth between the brown and green seaweed variants. In conclusion, both variants demonstrated similar adaptability and biomass growth potential under the environmental conditions of Pasir Panjang Beach. Therefore, seaweed farmers may use either variety as an equally viable cultivation option, depending on seedling availability in the field.
Co-Authors Agus Ismangil Bayumi Bayumi Daniel Candido Da Costa Soares David Togi Hamonangan Silaban Derri Syatriawan Erik Ariyanto Fevi Adi Pratama Helmi Harris Ika Kartika Karlus Hubertus Atok Negara, Teguh Puja Nurazizah Nurdin Rohendi, Muh Rahma Mulyani Rangga Bayu Kusuma Haris Regil Kentaurus Harries Simplisius Vian Ney Suci Andiewati Syarif Hidayatulloh Hidayatulloh Wahidin Yufika S Yusanti, Indah Anggraini