Ikan gurami merupakan salah satu jenis ikan air tawar yang disukai oleh masyarakat. Namun, pertumbuhan ikan ini relatif lambat sehingga memerlukan salah satu solusi untuk mempersingkat masa pemeliharaan ikan. Arang aktif salah satu suplemen yang dapat ditambahkan dalam pakan. Limbah tulang ikan kambing-kambing merupakan salah satu limbah dari fillet ikan kambing-kambing yang belum termanfaatkan secara optimal sehingga berpotensi dijadikan arang aktif. Tujuan penelitian ini adalah untuk menentukan dosis penambahan arang aktif tulang ikan kambing-kambing yang optimal dalam pakan sehingga dapat meningkatkan pertumbuhan ikan gurami. Rancangan penelitian yang digunakan adalah rancangan acak lengkap (RAL) dengan empat perlakuan dan dua ulangan, sebagai perlakuan yaitu penambahan arang aktif dengan dosis berbeda. Perlakuannya antara lain T0 (0%), T1 (1%), T2 (2%), dan T3 (3%). Ikan uji yang digunakan ukuran bobot 2,2 ± 0,1 g dan panjang 5,3 ± 0,1 cm. Benih ikan gurami tersebut dipelihara dalam akuarium dengan volume air 72 liter, padat tebar 10 ekor/wadah dan dipelihara selama 60 hari. Setiap akuarium di setting resirkulasi dan heater. Parameter yang diamati adalah histologi usus, sintasan, pertumbuhan bobot mutlak (PBM), pertumbuhan panjang mutlak (PPM), laju pertumbuhan harian (LPH), dan rasio konversi pakan. Hasil penelitian menunjukkan bahwa penambahan arang aktif tulang ikan kambing-kambing dalam pakan berpengaruh signifikan terhadap pertumbuhan bobot, pertumbuhan panjang, laju pertumbuhan harian (P<0,05). Penambahan arang aktif 2% dalam pakan (T2) merupakan perlakuan terbaik terhadap ikan gurami dengan nilai pertumbuhan bobot 14,6 ± 0,3 g; pertumbuhan panjang 9,31 ± 0,1 cm; dan SGR 1,38 ±0%/hari. Sedangkan untuk panjang dan lebar vili usus pada perlakuan penambahan arang aktif 2% lebih kecil dibandingkan perlakuan lainnya.One of the development bottlenecks of gouramy farming is its relatively slow growth during rearing. One of the solutions to make the gourami farming economically feasible is shortening the fish culture period via improving its growth. Activated charcoal is a feed supplement that can be added to fish feed. Starry triggerfish fish bone waste is the potential to be processed as activated charcoal for the feed supplement. This study aimed to determine the optimal dose of addition of activated charcoal of starry triggerfish (ACST) fish bone in the feed to increase the growth of gouramy fish. The research design used was a completely randomized design with four treatments and two replications. The treatment consisted of different supplementation doses of activated charcoal in the feed. The treatments included 0% ACST (T0), 1% ACST (T1), 2% ACST (T2), 3% ACST (T3). The fish used were 2.2 ± 0.1 g in weight and 5.3 ± 0.1 cm in length. The gourami seeds were maintained in aquariums (each volumed 72 liters) with stocking density of 10 fish/aquarium and reared for 60 days. Each aquarium was equipped with a recirculation and heater systems. The parameters observed were intestinal histology, weight gain (WG), length gain (LG), specific growth rate (SGR), survival rate (SR), and feed conversion ratio (FCR). The results showed that the supplementation of ACST in the feed had significant effects on WG, LG, and SGR (P<0.05). The supplementation with 2% ACST in the feed was the best treatment for the growth performance of gouramy fish resulting in WG, LG, and SGR in 14.6 ± 0.3 g, 9.31 ± 0.1 cm, and 2.40 ± 0% per day, respectively. Meanwhile, supplementation of 2% ACTS in the diet resulted smaller of length and width of intestinal villi of gouramy than to the other treatments.
Synthesis of compound (E)-4-(3-oxo-3-(phenethylamino)prop-1-en-1-il)-1,2-phenylene diacetate (3) analogue (E)-3-(3,4-dihydroxyphenyl)-N-phenethylacrylamide as a recommendation from the QSAR analysis was carried out. The synthesis of these compounds uses the starting material of caffeic acid through the stages of the reaction of acetylation, chlorination, and amidation. Acetylation was carried out using acetic anhydride in pyridine at room temperature for 4 hours. Chlorination was carried out using thionyl chloride reagent in dimethylphromamide solvent under reflux conditions at 80ºC for 4 hours, followed by amidation using phenethylamine in dichloromethane solvent at room temperature for 1 hour. The structure of each phase of the reaction product is identified using FT-IR spectroscopy. Acetylation produces white crystalline solids with melting point 182-184oC, and amidation produces compound 3 in the form of white crystals with melting point 170-173oC. The results of activity tests on murine leukaemia P-388 cells showed that the activity of compound 3 was classified as very strong (IC50 = 0,5 µg /mL) so that it was potentially used as an anticancer drug.
This study aims to see the physiological response of Bali cattle to the feeding of fermented straw substitution. A total of 12 head of Bali cattle average age five years. This research was conducted from August to September 2017 in Cenrana Village, Kahu Sub-district, Bone District, which is a location in the business of Berdikari Berdikari Mallomo Utama. This study used a randomized block design (RBD) with 4 treatments and 3 replications so that there were 12 experimental units, the procedure was P0: 100% elephant grass + 100% fermentation control, P1: elephant grass 75% + generation fermentation 25%, P2: 50%, elephant grass + 50% fermenting straw, and P3: Elephant grass 25% + 75% fermentation straw. The parameters observed were body temperature, respiration rate, and liver rate. The data obtained were analyzed variance and continued with LRD test. The results showed that the substitution of hay fermentation had a significant effect (P <.01) on the physiological response of Balinese cow heart, but no significant effect (P> .05) to the body temperature and the rate of respiration of Bali cattle. The conclusion that by giving fermented straw substitution feed provide an effect on heart rate (58.33 / min) with treatment 25% elephant grass + 75% fermented straw in the normal range for Bali cattle.
Penelitian ini bertujuan untuk mengetahui performans reproduksi puyuh petelur setelah penambahan tepung kunyit dalam pakan. Penelitian ini dilakukan dengan menggunakan metode Rancangan Acak Lengkap (RAL) dengan menggunakan puyuh petelur berumur 30 minggu sebanyak 45 ekor, dibagi secara acak berdasarkan perlakuan P1=1% tepung kunyit, P2=2% tepung kunyit P3=3% tepung kunyit. Parameter yang diamati dalam penelitian ini adalah berat folikel primer, jumlah hierarki folikel dan berat telur. Hasil penelitian menunjukan bahwa penambahan tepung kunyit dalam pakan berpengaruh nyata (P<0,05) terhadap berat telur dan jumlah hierarki folikel. Namun tidak memberikan pengaruh yang nyata terhadap berat folikel primer.
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