Identification of Secondary Metabolites From Ethanol Extract of Ciplukan (Physalis Angulate) Leaves and Toxicity Test on Post-Larvae of Tiger Shrimp (Penaeus Monodon) [Identifikasi Senyawa Metabolit Sekunder Ektrak Etanol Daun Ciplukan (Physalis Angulata) Dan Uji Toksisitas Terhadap Sintasan Post Larva Udang Windu (Penaeus Monodon)]

Physalis angulata merupakan tumbuhan pekarangan yang telah banyak dimanfaatkan sebagai tumbuhan obat oleh masyarakat. Tumbuhan ini diduga memiliki metabolit sekunder yang dapat dimanfaatkan sebagai obat dan peningkatan nutrisi. Penelitian ini bertujuan untuk mengindentifikasi senyawa metabolik sekunder dan toksisitasnya terhadap sintasan post larva (PL) udang windu. Penelitian ini dilakukan dengan beberapa tahapan (1). Ekstraksi P. angulata dengan menggunakan etanol, (2) Uji GCMS P. angulata, (3) Identifikasi metabolit sekunder dari P. angulata (4) Uji LC50 (Lethal Concentration 50) dan (5) Analisis data. Berdasarkan hasil analisis GCMS menunjukkan bahwa P. angulata mengandung metabolit sekunder golongan senyawa antara lain fenol, steroid, asam lemak, terpenoid, benzene dan alkaloid. Senyawa- senyawa yang terkandung tersebut diduga dapat dijadikan sebagai pengembangan budidaya udang pada penanggulangan penyakit, percepatan pertumbuhan dan peningkatan kualitas telur. Sedangkan hasil uji toksisitas dengan menggunakan larva udang windu selama 48 jam menunjukkan bahwa konsentrasi aman yang dapat digunakan untuk pengembangan udang dengan memanfaatkan ekstrak ciplukan dengan konsentrasi 13,1 mg/l

Performans Ayam Broiler Yang Diberi Ransum Mengandung Rumput Laut Gracilaria Verrucosa Terfermentasi (a Performance Broilers Were Given Rations of Fermented Containing Seaweed Gracilaria Verrucosa)

The experiment was to determine the effect of fermented seaweed (Gracilaria verrucosa) meal in the diet on broiler performance art. The experiment was conducted in November-December 2013 at the Faculty of Animal Husbandry and Agriculture Diponegoro University, Semarang. The material used is 150 broiler chickens males and females aged 7 days with an average body weight of 163.38 ± 24.67 g (CV 3.04). Research using completely randomized design (CRD) with 5 treatments and 6 replicates of each experimental unit filled 5 broiler chickens. Feed treatment applied is T0 (use 0% seaweed meal), T1 (use 5% seaweed meal), T2 (use 5% meal fermented seaweed), T3 (7.5% use meal fermented seaweed), T4 (use 10% meal fermented seaweed). Feeding adlibitum administered and controlled. Parameters observed in this study include: weight gain, feed intake and feed conversion. Data were analyzed using a variety of testing and continued F Duncan test if the effect of treatment. The results showed that the treatment had no significant effect (P> 0.05) on feed consumtion, body weight gain and feed conversion. Conclusion that the use of meal seaweed (Gracilaria verrucosa) fermented can be used in broiler rations up to 10%

Identifikasi Bakteri Pada Serasah Daun Mangrove yang Terdekomposisi di Kawasan Konservasi Mangrove dan Bekantan (KKMB) Kota Tarakan

Bacteria in mangrove ecosystem has a significant role in litter decomposition that is essential to provide organic nutrition for organisms in mangrove forest. The research was aimed to identify decomposition bacteria that exist in KKMB Tarakan mangrove conservation area. The identification focused on litters from several mangrove vegetation, which are Bruguiera parviflora, Rhizophora apiculata, Sonneratia alba, dan Avicennia alba. The method used was explorative descriptive while testing parameter was genus. The research identified seven bacteria genera for litter from Bruguiera parviflora which are Bacillus, Aeromonas, Nocardiae, Corynebacterium, Listeria, Bacteroides, Pseudomonas. Six genera from Rhizophora apiculata which are Bacillus, Listeria, Enterobacteria, Aeromonas, Actinobacilus, and Bacteroides. Five genera for Sonneratia alba which are Bacillus, Aeromonas, Listeria, Enterobacteria, Staphylococcus. Also eight genera from Avicennia alba which are Bacillus, Clostridium, Enterobacteria, Bacteroides, Plesiomonas, Bordella, Streptococcus, and Neisseria. The results conclude that different species of mangrove vegetation attracts different species of bacteria as well

Identifikasi Bakteri Pada Serasah Daun Mangrove yang Terdekomposisi di Kawasan Konservasi Mangrove dan Bekantan (KKMB) Kota Tarakan

Bacteria in mangrove ecosystem has a significant role in litter decomposition that is essential to provide organic nutrition for organisms in mangrove forest. The research was aimed to identify decomposition bacteria that exist in KKMB Tarakan mangrove conservation area. The identification focused on litters from several mangrove vegetation, which are Bruguiera parviflora, Rhizophora apiculata, Sonneratia alba, dan Avicennia alba. The method used was explorative descriptive while testing parameter was genus. The research identified seven bacteria genera for litter from Bruguiera parviflora which are Bacillus, Aeromonas, Nocardiae, Corynebacterium, Listeria, Bacteroides, Pseudomonas. Six genera from Rhizophora apiculata which are Bacillus, Listeria, Enterobacteria, Aeromonas, Actinobacilus, and Bacteroides. Five genera for Sonneratia alba which are Bacillus, Aeromonas, Listeria, Enterobacteria, Staphylococcus. Also eight genera from Avicennia alba which are Bacillus, Clostridium, Enterobacteria, Bacteroides, Plesiomonas, Bordella, Streptococcus, and Neisseria. The results conclude that different species of mangrove vegetation attracts different species of bacteria as well