AbstrakPenelitian ini bertujuan untuk mengembangkan media belajar video pada materi pencemaran dan kerusakan lingkungan untuk siswa kelas VII SMP Inshafuddin Banda Aceh. Metode Penelitian yang digunakan adalah penelitian dan pengembangan (research and development) dengan model ADDIE yang terdiri dari 5 langkah, yaitu: analysis, design, development, implementation, dan evaluation. Instrumen yang digunakan adalah lembar angket validasi kelayakan media. Hasil rata-rata angket validasi yang diperoleh dari 4 validator sebesar 92,67% (sangat layak). Hasil yang diperoleh dapat disimpulkan bahwa media belajar video pada materi pencemaran dan kerusakan lingkungan yang telah dikembangkan layak diuji coba lebih lanjut untuk melihat efektivitas dalam pembelajaran.Kata kunci: Video, Pencemaran Lingkungan, ADDIE.

The aim of this study was to evaluate the in vitro antibacterial activity of Black soldier fly (BSF) larva extract. The BSF larva was extracted using methanol and then tested for antibacterial activity using agar diffusion method (zone growth inhibition). The antibacterial activity was conducted against Salmonella sp. and Escherichia coli, two important bacterial strains in poultry, using six dilution levels (10 mg/ml, 20 mg/ml, 40 mg/ml, 80 mg/ml, 160 mg/ml and 320 mg/ml). All the results were subjected analyze using t-test method. Based on the diameter of the inhibition zone, the BSF larva extract has a strong (P<0.05) antibacterial activity against Salmonella sp. and E. coli when the concentration used 320 mg/ml. In addition, BSF larva extract also contain high amount of lauric acid (49.18%), a saturated fatty acid that has been proven to proposes as antibacterial agent. Therefore, it could be concluded that the BSF larva extract could be used as a candidate for antibacterial substances.

Abstract. Fat, cholesterol and fatty acid profile of breast and thigh meat of 12 Muscovy ducks (6 drakes) aged 8 weeks from the local farm in Bogor, West Java were analyzed in thus study. In general, Muscovy ducks were fed with rice bran twice a day and free-ranged in the backyard. The nutrition of rice bran is varied in crude protein, crude fiber, fat, and ash content. Muscovy ducks were slaughtered and the percentage of carcass weight, fat, cholesterol and fatty acid profile of the breast and thigh meat were measured and analyzed. The result showed that the breast meat had higher (P<0.05) ω3 total fatty acid EPA (C20:5ω3) but DHA (C22:6ω3) and linolenic acid (C18:3ω3) were not significant compared to that of thigh meat. Concentration of linolenic acid in breast meat ranged from 0.26 to 0.51% of fat and 0.35 to 0.39% of fat in thigh meat. Linoleic acid (C18:2ω6) in breast and thigh meat was 7.64 -10.73% and 5.17 -13.93 % fat, respectively. DHA concentration ranged from 0.13-1.31% fat in breast meat and EPA in thigh meat was approximately 0.08-0.32 % fat. EPA was significantly higher (P<0.05) in breast meat (0.03-0.28 %) than thigh meat (0.05-0.08 %) The study produced ω 6:3 ratio ranged 6.50-24.14 and 8.94-31.64 in breast and thigh meat, respectively. Key words: Muscovy duck, fatty acid, fat, cholesterol.Abstrak. Penelitian ini bertujuan untuk mendapatkan informasi tentang kandungan leamk,cholesterol dan profil asam lemak dari daging dada dan daging paha entok (Muscovy duck) yang dipelihara secara tradisional oleh masyarakat. Entok diberi pakan dedak padi yang mempunyai kualitas rendah dan beragam dari 6 peternak yang ada di kota Bogor, Jawa Barat, Indonesia. Dedak padi diberikan dua kali sehari yaitu pagi dan siang kemudian entok di lepas disekitar halaman rumah. Penelitian ini menggunakan 12 sampel entok berumur 8 minggu kemudian dipotong dan diukur karkas, persentase daging dada dan paha dan kandungan lemak,cholesterol dan asam lemak. Hasil penelitian diperoleh daging dada lebih tinggi kandungan total asam lemak ω 3 (P<0.05), EPA (C20:5ω3) (P<0.05) daripada daging paha tetapi DHA (C22:6ω 3) tidak berbeda nyata. Kadar asam linolenat (C18: 3ω3) pada daging dada berkisar dari 0,26 to 0,51% total lemak dan 0,35 to 0,39 % total lemak di daging paha. Asam linoleat (C18:2 ω 6) berkisar 7,64 -10,73% total lemak di daging dada dan 5,17 -13,93 % total lemak di daging paha. Kadar DHA (C22:6ω 3) berkisar 0,13-1,31% total lemak di daging dada dan EPA berkisar 0,08-0,32 % total lemak di daging paha. Kadar EPA lebih tinggi (P<0,05) di daging dada dibandingkan daging paha berkisar 0,03-0,28 % total lemak (daging dada) sampai 0,05-0,08 % total lemak (daging paha). Penelitian ini menghasilkan rasio ω 6/ ω 3 berkisar 6,50-24,14 di daging dada dan 8,94-31,64 di daging paha.

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Background and Aim: The presence of free radicals may lower chicken's performance. Thus, the antioxidant defense is needed and can be made through a nutritional approach such as selenium supplementation before hatches. This study aimed to investigate the type of selenium that, as an in ovo feeding (IOF) material, can provide the most enhancement of immunity, villi surface area, and early growth performance of local chickens. Materials and Methods: This study, with a completely randomized design, used 480 fertile Kampung Unggul Balitbangtan (KUB, a selected local breed) chicken eggs, with 120 eggs per treatment for four treatments. The four treatments of IOF material included the treatment with organic selenium yeast (SY), organic hydroxy-selenomethionine (HSM), inorganic sodium selenite (SS), and uninjected selenium (control). A solution containing 0.15 ppm of different selenium was injected into the egg amnion after 18 days of incubation. Once hatched, the chicks were placed in three individual cages for each treatment (capacity of eight birds per cage). The parameters observed were the villi surface area, antibody titer, the number of total and differentiated leucocytes, glutathione peroxidase (GSH-Px) activity levels, and growth and feed efficiency of the early growth performance. Results: All the in ovo selenium feeding, except SS, significantly affected the villi surface area, antibody titer, and lymphocyte and heterophil percentages; however, the feedings were still not optimal for enhancing antibody titers and total and differentiated leukocytes. All types of selenium were demonstrated to increase the activity of GSH-Px significantly compared to the control treatment (p<0.05). Furthermore, the daily gain and feed conversion ratio of the groups treated with SY and HSM was significantly improved compared to that of the control group. Conclusion: In ovo SY and HSM improve immunity significantly, villi surface areas and performance. Therefore, both types are the best nutrient ingredients of IOF for building immunity and producing good performance in chickens.