Judul: Penambahan Tepung Daun Mengkudu Morinda citrifolia L. pada Pakan Ikan Patin Pangasianodon hypophthalmus untuk Pencegahan Infeksi Aeromonas hydrophila
Abstrak: Aeromonas hydrophila is a bacterial causing motile aeromonads septicaemia (MAS) that groaning of stripped catfish Pangasianodon hypophthalmus. Flour of noni Morinda citrifolia L. leaves is a natural substance that contains flavonoids, anthraquinones, terpenoids, alkaloids, and saponins that have the potential as an antibacterial and immunostimulant. This research was aimed to determine the optimal dosage of flour of noni leaves for the prevention of Aeromonas hydrophila infection in stripped catfish. Stripped catfish was used in this research have the average body length 11.26±0.10 cm/fish and weight 12.39±0.49 g/fish which was fed with the mixture of flour of noni leaves at dosage 0%, 0.5%, 1%, and 2% during 14 days. Challenging test was carried out by intramuscularly injection of 0.1 mL Aeromonas hydrophila (107 CFU/mL) into the fish on 15th day and gave commercial feed until on 28th day. The treatment with dosage 0.5% gave survival 83.33±2.88 % which is higher than the positive control treatment had survival only 40±10.00%.
Keyword: Bogor Agricultural University (IPB), Pangasianodon hypophthalmus, Morinda citrifolia L, Aeromonas hydrophila

Judul: Pencegahan Infeksi Aeromonas hydrophila pada Ikan Nila dengan Tepung Buah Mengkudu (Morinda citrifolia) melalui Pakan
Abstrak: Ikan nila merupakan komoditas air tawar yang dapat terserang penyakit MAS (Motile Aeromonas Septicemia) yang disebabkan oleh bakteri Aeromonas hydrophila. Buah mengkudu berpotensi untuk dimanfaatkan sebagai upaya pencegahan karena mengandung senyawa aktif seperti scopoletin, antrakuinon, fenol, flavonoid, dan alkaloid. Penelitian ini bertujuan untuk menentukan dosis tepung buah mengkudu (Morinda citrifolia) dalam pakan sebagai upaya pencegahan infeksi bakteri A. hydrophila pada benih ikan nila. Ikan nila yang digunakan memiliki bobot awal 12,75 ± 0,31 g yang dipelihara selama 30 hari dengan perlakuan pemberian pakan kemudian diuji tantang pada hari ke-31, dan dipelihara kembali selama 14 hari dengan pakan komersil. Perlakuan yang digunakan berupa penambahan tepung buah mengkudu dengan dosis 5 g/kg pakan (D5), 10 g/kg pakan (D10), 15 g/kg pakan (D15), kontrol positif (K+), dan kontrol negatif (K-). Penambahan tepung buah mengkudu menunjukan hasil kelangsungan hidup, total leukosit, gejala klinis dan kondisi organ dalam yang lebih baik dibandingkan kontrol positif. Tepung buah mengkudu yang diberikan melalui pakan kepada ikan nila dapat mencegah infeksi bakteri A. hydrophila dengan dosis terbaik pada dosis 10 g/kg pakan., Tilapia is a freshwater commodity that can be attacked by MAS (Motile Aeromonas Septicemia) caused by Aeromonas hydrophila bacteria. Noni fruit has the potential to be used as a preventive measure because it contains active compounds such as scopoletin, anthraquinones, phenols, flavonoids, and alkaloids. This study aims to determine the dose of noni fruit flour (Morinda citrifolia) in feed as an effort to prevent infection with A. hydrophila bacteria in tilapia fry. The tilapia used had an initial weight of 12.75 ± 0.31 g which were reared for 30 days by feeding treatment, then challenged on the 31st day, and reared again for 14 days with commercial feed. The treatments used were the addition of noni fruit flour at a dose of 5 g/kg feed (D5), 10 g/kg feed (D10), 15 g/kg feed (D15), positive control (K+), and negative control (K-). The addition of noni powder showed better survival results, total leukocytes, clinical symptoms and organ conditions compared to positive controls. Noni fruit flour given through feed to tilapia can prevent infection with A. hydrophila bacteria with the best dose at a dose of 10 g/kg feed.
Keyword: Gejala klinis, Kelangsungan hidup, Kondisi organ dalam, Total leukosit

Judul: Grup dan Homomorfisma Grup pada Rubik Revenge
Abstrak: Rubik cube is a kind of puzzle game. A player must arrange rubik sides, which have been disordered, back to the position where every side has the same colour. This paper does not focus on the settlement solution, but instead on proving the existence of a group homomorphism between rubik movement group and S96 symmetric permutation group in rubik revenge. Firstly, it has been proved that rubik movement set is a group. Then, it also has been proved that the M set, which contains numeric labels of 1 until 96 in cubinos sides, is S96 symmetric permutation group.
Keyword: