Judul: Performa Ayam Broiler yang diberi Sinbiotik Campuran Tepung Ubi Jalar Merah dan Ragi Tape pada Periode yang Berbeda
Abstrak: This research aimed to assess the effect of red sweet potato meal and tape yeast as a mixed synbiotic on performance of broiler in different periods. This experiment used 200 day old chicks (DOC) of broiler kept with litter system for 42 days. Data were analyzed using a completely randomized design with five treatments and four replicates, consisted of 10 broilers in each replicates. The treatment diets were P1 = commercial feed, P2 = basal feed, P3 = basal feed + 3% sweet potato meal + 0.75% tape yeast (starter-finisher periode), P4 = basal feed + 3% sweet potato meal + 0.75% tape yeast (starter periode), P5 = basal feed + 3% sweet potato meal + 0.75% tape yeast (finisher periode). Variables observed were daily intake, body weight gain, final body weight, feed convertion, PER, water intake, carcass percentage, mortality, IOFCC, temperature and humidity. The result showed there is no effect on all cumulative performance of broiler. The best used sinbiotic on starter periode. IOFCC in treatment P4 were more profitable than the other treatments. Addtion of sinbiotic reduced mortality rates compared to commercial feed.
Keyword: tape yeast, symbioti, red sweat potato meal, performance

Judul: Pemberian Sinbiotik Ubi Jalar Merah dan Ragi Tape pada Periode Berbeda terhadap Kecernaan Nutrien dan Energi Termetabolis pada Ayam Broiler
Abstrak: This research aimed to observe the addition effects of synbiotic 3% red sweet potato meal and 0.75% tape yeast (fermented cassava) as feed additive on feed metabolizable energy and digestibility of broiler at different periods of rearing. Twenty four male of six weeks old broilers were used. The experimental design used was Completely Randomized Design (CRD) consisting of five treatments. P1 = Commercial diet, P2 = Basal diet, P3 = P2 + synbiotic (starterfinisher periode), P4 = P2 + synbiotic (starter periode), P5 = P2 + synbiotic (finisher periode) with four replicates. Variables measured were digestibility of dry matter, crude fat, crude fiber, metabolizable energy, and nitrogen retention. The results showed that the addition of synbiotic significantly increased (P<0.05) dry matter digestibility, crude fat digestibility, and metabolizable energy, but did not affected crude fiber and nitrogen retention . The synbiotic addition during starter periode showed the best effect on increasing dry matter digestibility and metabolizable energy
Keyword: Bogor Agricultural University (IPB), tape yeast, synbiotic, red sweet potato meal, production period, nutrient digestibilities, energy metabolizable

Judul: Heisenberg Uncertainty of Double SlitSystem Based on Budiyono-Rohrlich Quantum Statistics Model
Abstrak: Interpretasi kuantum dikembangkan untuk memaknai secara fisis dengan jelas bagaimana suatu dinamika pada sistem mikroskopis yang dijelaskan dengan teori-teori kuantum, seperti interpretasi Copenhagen yang mendeskripsikan sistem kuantum sebagai suatu keadaan yang dideskripsikan dengan fungsi gelombang yang berisikan bagaimana peluang keadaan suatu sistem. Interpretasi kuantum juga bisa dibawa dari suatu sistem klasik seperti pada model statistika-kuantum Budiyono-Rohrlich yang menjelaskan bagaimana dinamika kuantum berhubungan dengan sistem klasik dengan penerapan statistika pada model Hamiltonian sistem. Fungsi distribusi dapat mendeskripsikan bagaimana suatu sistem terdistribusi pada suatu ruang pada pandangan klasik namun untuk sistem kuantum fungsi distribusi adalah peluang dari sistem tersebut. Sistem klasik dan kuantum juga dipisahkan berdasarkan pada ketidakpastian Heisenberg tentang suatu pengukuran yang tidak bisa secara sekaligus dilakukan bersamaan. Model statistika-kuantum Budiyono-Rohrlich membawa suatu sistem klasik menjadi sistem kuantum dengan dua aksioma yaitu hukum kekekalan energi rata rata dan konservasi rapat probabilitas. Sistem klasik yang didefinisikan akan diatur dengan menambahkan dua variable matematis berupa ontic extensions dan epistemic restrictions dimana kedua variabel ini yang akan menghubungkan bagaimana sistem klasik bisa diubah menjadi sebuah sistem kuantum. Dua variabel matematis tadi membuat sebuah sistem bisa diperlihatkan ketidakpastiannya lewat perhitungan simpangan rata-rata dan hasilnya akan selalu memenuhi ketidakpastian Heisenberg
Keyword: fungsi distribusi, model Budiyono-Rohrlich, ontic extension, epistemic restriction, ketidakpastian Heisenberg