This study was aimedto identify probiotic characteristics and to test the cellulolytic ability of Bacillus megaterium and Bacillus mycoides bacteria for probiotic microbe

No abstract

Analisis pada penelitian penting dilakukan untuk tujuan mengetahui ketepatan dan keakuratan dari penelitian itu sendiri. Begitu juga dalam prediksi volume ekspor dan impor migas di Indonesia. Dilakukannya penelitian ini untuk mengetahui seberapa besar perkembangan ekspor dan impor Indonesia di bidang migas di masa yang akan datang. Penelitian ini menggunakan Jaringan Syaraf Tiruan (JST) atau Artificial Neural Network (ANN) dengan algoritma Backpropagation. Data penelitian ini bersumber dari dokumen kepabeanan Ditjen Bea dan Cukai yaitu Pemberitahuan Ekspor Barang (PEB) dan Pemberitahuan Impor Barang (PIB). Berdasarkan data ini, variabel yang digunakan ada 7, antara lain: Tahun, ekspor minyak mentah, impor minyak mentah, ekspor hasil minyak, impor hasil minyak, ekspor gas dan impor gas. Ada 5 model arsitektur yang digunakan pada penelitian ini, 12-5-1, 12-7-1, 12-8-1, 12-10-1 dan 12-14-1. Dari ke 5 model yang digunakan, yang terbaik adalah 12-5-1 dengan menghasilkan tingkat akurasi 83%, MSE 0,0281641257 dengan tingkat error yang digunakan 0,001-0,05. Sehingga model ini bagus untuk memprediksi volume ekspor dan impor migas di Indonesia, karena akurasianya antara 80% hingga 90%. (Declaration Form/PEB and Impor Export Declaration/PIB). Based on this data, there are 7 variables used, among others: Year, Crude oil exports, Crude oil Impors, Exports of oil products, Impored oil products, Gas exports and Gas Impors. There are 5 architectural models used in this study, 12-5-1, 12-7-1, 12-8-1, 12-10-1 and 12-14-1 ABSTRACT Analysis of the research is Imporant used to know precision and accuracy of the research itself. It is also in the prediction of Volume Exports and Impors of Oil and Gas in Indonesia. This research is conducted to find out how much the development of Indonesia's exports and Impors in the field of oil and gas in the future. This research used Artificial Neural Network with Backpropagation algorithm. The data of this research have as a source from custom documents of the Directorate General of Customs and Excise

This study aimed to understand the effects of various energy-protein ratios of feed on nilem carp fish (Osteochilus hasselti) growth. This study was conducted from September to October 2017 at the Laboratory of Building 4, Faculty of Fisheries and Marine Sciences, Universitas Padjajaran. The average size of the test fish was ± 7 cm with an average weight of 3 grams. This was a Completely Randomized Design (CRD) experimental study consisting of 5 treatments and 3 repetition. The treatments given were 5 feed formulas based on different feed protein energy ratios, i.e. treatment A (31% protein, ratio 10), treatment B (31% protein, ratio 8), treatment C (28% protein, ratio 10), D (28% protein, ratio 8), and E (30% protein commercial feed/control). Feed, 5% of the test fish total weight, was provided 3 times a day. Parameters observed were daily growth rate, feed conversion, and survival. Data gained were analyzed using F-test, followed by Duncan Test if differences were found between treatments. Results showed that growth rate and feed conversion of all treatments were not different compared to control. The highest result was found in treatment A (31% protein, ratio 10) with a daily growth rate of 3.99% and feed conversion of 1.95%.

Abstract. Andriani Y, Dhahiyat Y, Zahidah, Zidni I. 2016. The effect of stocking density ratio of fish on water plant productivity in aquaponics culture system. Nusantara Bioscience 8: xxxx. This study aims to determine the productivity of water plants at various stocking density ratios in the aquaponic culture system. This study is conducted experimentally using the Completely Randomized Design with the differences in the treatment of stocking density ratio, each repeated five times. The treatments of the stocking density ratio of both the catfish fry and the Nile tilapia fry include: A (75:75 fry/m 2 ), B (100:50 fry/m 2, and C (125:25 fry/m 2 ). The observed parameters are 1) plant productivity including measuring the growth of water spinach and growth rate, covering weight gain, stem length and number of leaves, and 2) water quality, including dissolved oxygen (DO), nitrate and phosphate. The data of plant productivity is analyzed descriptively while the water quality is analyzed using ANOVA. The result of this study shows that the stocking density ratio significantly affects the productivity of water plants and the water quality of the media. The highest productivity of water spinach productivity occurs at the stocking density ratio of 75 catfish fry/m 2 : 75 Nile tilapia fry m 2 , at which the average stem length is 59.14 cm, average number of leaves is 13.67, and the harvest weight is 465 g. Fish stocking density ratio also affects the quality of water, where the synergy between fish farming and water plant growing results in the better water quality compared to fish farming without water plant. The highest quality of water is achieved at the stocking density ratio of 100 catfish fry/m 2: 50 Nile tilapia fry/m 2 .

Abstract. Hasan Z, Dhahiyat Y, Andriani Y, Zidni I. 2016. Water quality improvement of Nile tilapia and catfish polyculture in aquaponics system. Nusantara . Research on the improvement of polyculture water quality in aquaponics system was conducted from July 2014 to August 2014. This study aims to improve the water quality in Nile tilapia and catfish polyculture by applying the aquaponics system. The results show that several water quality parameters increase, such as dissolved oxygen, ammonia, and nitrate. Meanwhile, Orthophosphate tends to be similar both in aquaponics system and control. The study is conducted experimentally by using completely randomized design. The cultured fish are catfish and Nile tilapia while the aquatic plants are water spinach and lettuce. At the end of the study the concentration of dissolved oxygen in the aquaponics system ranges from 5.3 to 7.6 mg/L, while in the media control ranges from 4.2 to 4.3 mg/L. Average concentrations of ammonia, nitrate and orthophosphate in the aquaponics system range from 0.003 to 0.25 mg/L, 10.0 to 50.7 mg/L and 3.0 mg/L-5.0 mg/L respectively. Meanwhile, in media control, concentration of those three parameters are 0.003 to 0.35 mg/L, 10.0 to 60.0 mg/L and 3.0 to 5.0 mg/L respectively. Based on this study, it is concluded that the polyculture water quality can be improved through the application of the aquaponics system.

This study aims to determine the growth of fish (Nile tilapia, North African catfish, and goldfish) which cultured along with water spinach in aquaponics system. The study was conducted at the Laboratory of Aquaculture, Ciparanje, Facul-ty of Fisheries and Marine Sciences, Padjadjaran University from February to April 2016. The experiment was designed using a completely randomized design with 5 treatments and 3 replicates. Treatment A: positive control, water spinach grown on soil and compost fertilizer, Treatment B: negative control, water spinach grown on soil without compost fertilizer, treatment C: aquaponics Nile tilapia and water spinach, Treatment D: aquaponics North African catfish and water spinach, and treatment E: aquaponics goldfish and water spinach. The measured parameters in this study were fish growth and water spinach growth include stem height, number of leaves, biomass as well as water quality included nitrates, ammonia and phosphates. The results showed that the highest fish growth, obtained in combination of catfish and water spinach with growth of 7.8±1.18 grams and the highest water spinach growth obtain in koi cultured with water spinach with average biomass 30.40±5.59 grams. AbstrakPenelitian ini bertujuan untuk menentukan pertumbuhan tiga jenis ikan (lele, nila, dan koi) yang dipelihara bersama de-ngan kangkung darat dalam sistem akuaponik. Penelitian dilakukan di Laboratorium Budi daya Perikanan, Ciparanje, Fakultas Perikanan dan Ilmu Kelautan Universitas Padjadjaran dari bulan Februari hingga April 2016. Metode yang digunakan dalam penelitian ini adalah metode eksperimental menggunakan rancangan acak lengkap dengan lima perla-kuan dan diulang empat kali. Perlakuan A: kontrol positif, tanaman kangkung darat ditanam menggunakan tanah dan pupuk kompos; perlakuan B: kontrol negatif, tanaman kangkung darat ditanam menggunakan tanah tanpa menggunakan pupuk kompos; perlakuan C: akuaponik dengan ikan nila dan tanaman kangkung darat; perlakuan D: akuaponik dengan ikan lele dan tanaman kangkung darat, dan perlakuan E: ikan koi dan tanaman kangkung darat. Parameter yang diukur dalam penelitian ini adalah pertumbuhan bobot ikan, dan pertumbuhan kangkung yang meliputi tinggi batang, jumlah daun, dan biomassa panen serta kualitas air yang mencakup nitrat, ammonia, dan fosfat. Hasil penelitian menunjukkan bahwa pertumbuhan bobot ikan tertinggi diperoleh pada kombinasi lele dan kangkung darat dengan pertumbuhan sebe-sar 7,8±1,18 g dan pertumbuhan tanaman kangkung tertinggi diperoleh pada pemeliharaan bersama koi yang mengha-silkan biomassa sebesar 30,40±5,59 g.

This research aims to determine the optimal probiotic concentration and to analyze the effect of addition of fermented restaurant waste meal (FRWM) in feed to growth of nile tilapia. The research was carried out from February-June 2019 at Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran. This research used experimental method with a Completely Randomized Design (CRD) consisting of five treatments and three replications. The treatments given consisted of addition of 0, 10, 20, 30 and 40% of FRWM in feed. The parameters observed included changes in the nutritional value of restaurant waste, daily growth rate, survival, feed conversion ratio, and water quality. Data were analyzed using analysis of variance. and was further analyzed using Duncan’s multiple range test 5%. The results showed that the addition of 8% probiotic concentration was able to provide the best change in the nutritional quality of restaurant waste by increasing feed protein by 50.83% and decreasing crude fiber by 30.74%. The use of 30% fermented restaurant waste meal in feed gave the highest daily growth rate of 1.57% and the best feed conversion ratio of 0.57 with a survival rate ranging from 75-90%.