Judul: Pemanfaatan wheat bran dalam pakan ikan mas Cyprinus carpio
Abstrak: Two experiments were conducted to evaluate the effect of wheat bran as a partial replacement of soybean meal and corn meal in the diet of common carp Cyprinus carpio. In these experiments, four experimental diets contained 0%, 10%, 20%, or 30% wheat bran were used. In experiment I, a triplicate experiment was conducted using fish with an initial body weight of 23 ± 0,13 g. Fish were cultured in floating net cage with size of 2 x 2 x1 m3 at Cirata lake, with a density of 250 fish/cage. Fish fed on the diet at satiation for 60 days. In experiment II, the diets were subjected to indirect digestibility test by using 0,05% Cr2O3 as a tracer. Two groups of fish with an initial body weight of 6 ± 0,12 g and 50 ± 0,18 g were held in aquaria 60 x 40 x 40 cm3 at density of 20 fish/aquaria. Feces were collected daily, 60 minutes after feeding, feces collection were done for 15 days. The results showed that utilization of wheat bran from 0 to 30% in the diet was not significantly affected the growth performance of fish, including protein retention, feed efficiency and daily growth rate. Those growth performance were in the range of 20,16 – 20,69%, 35,79 – 38,63%, and 93,44 – 98,03% respectively. Regardless of fish size, it was also found that protein digestibility of the diet was decreased when wheat bran was used in the diet at level of 20% or more. Based on the calculation of the price of diet to produce 1 kg of fish, it was found that the diet contain 20% of wheat bran had the most lowest production cost. It can be concluded that wheat bran can be used as a partial replacement of soy bean meal and fully replacement of corn meal for common carp up to 30%.
Keyword: 

Judul: Kajian tepung bungkil biji karet (TBBK) Hevea brasiliensis sebagai bahan baku pakan benih ikan mas
Abstrak: This research was conducted to study rubber seed meal (Hevea brasiliensis) as a candidate of plant protein source in diet for common carp fry (Cyprinus carpio Linn). This study were divided into 2 experiments: digestibility and growth. Processed rubber seed meal (pRSM) and unprocessed (upRSM) were subjected to digestibility experiment and Cr2O3 at level of 0.05% was used as a tracer. The faeces were daily collected 30-60 minutes after feeding for 14 days. Dry matter, protein, phosphorus and calcium were used as digestibility parameters. Four treatment diets with isoprotein (30%) were used to evaluate growth performance index. Diet P1 have not contained protein come from pRSM. Diet P2 and P3 contained 50 and 75% of protein come from pRSM. Diet P4 contained 50% of protein come from upRSM. Completely randomized design with 4 treatments and 3 replicates were used to this experiment. Common carp fry 2.19 ± 0.005 g was entered to 18 aquariums at 20/aquarium and feed tested diet at satiation for 40 days of culture period. The evaluated parameter were survival rate, feed consumption, feed efficiency, relative growth, protein and lipid retention, water/lipid/glycogen liver content and hepatosomatic index, histological and haematological blood. The result showed that common carp fry relatively better digested pRSM than upRSM. Moreover, the increasing of protein percentage from pRSM until 50% resulted best growth perfomance indicator and haemotological blood parameter. It is concluded that pRSM can be used as protein source up to 50% in diet common carp fry.
Keyword: 

Judul: Manajemen Bahaya di Kawasan Wisata Pendakian Gunung Agung, Kabupaten Karangasem, Bali.
Abstrak: Gunung Agung (3043 mdpl), yang merupakan gunung tertinggi di pulau Bali, merupakan tujuan yang menarik bagi wisatawan lokal dan asing. Banyak umat Hindu dari Bali dan daerah lain mendaki gunung ini dengan tujuan keagamaan. Karakteristik yang beragam di sepanjang jalur pendakian dapat menempatkan pengunjung pada beberapa risiko. Oleh karena itu, penelitian ini bertujuan untuk mengidentifikasi potensi bahaya yang ada untuk menyusun rekomendasi manajemen bahaya. Pengumpulan data dilakukan pada bulan April-Mei 2018 melalui wawancara dan studi pustaka. Metode analisis risiko dari United Nations Environment Programme (UNEP) dan National Patient Safety Agency (NPSA) digunakan untuk menganalisis potensi bahaya. Potensi bahaya fisik yang teridentifikasi meliputi kelerengan, kabut gunung, angin kencang, suhu rendah, tanah longsor, dan aktivitas vulkanik, sementara pohon mati atau tumbang dan monyet ekor panjang diidentifikasi sebagai potensi bahaya biologi. Potensi bahaya aktivitas manusia muncul dari empat kegiatan yang sering diabaikan oleh pengunjung. Pengunjung harus dilibatkan dalam manajemen bahaya. Kesadaran dan kemampuan mereka untuk mengatasi risiko perlu ditingkatkan sebagai salah satu upaya preventif. Pengelola perlu menyusun skenario evakuasi serta sistem evakuasi dan penyelamatan sebagai tindakan represif.
Keyword: Gunung Agung, manajemen bahaya, keselamatan pengunjung, penilaian risiko