Judul: Evaluasi Stabilitas Aktivitas Enzim Selulase Cairan Rumen Domba
Abstrak: Developing Indonesian fishery sector needs solution in handling feed ingredients. An effort that has been carried out is the use of rumen fluid to lower crude fiber content of feed ingredients. Previous reasearch showed activities of several enzymes in sheep rumen fluid. The enzyme activity values were cellulase (0.015 ± 0.31), amylase (0.14 ± 0.016), protease (0.11 ± 0.016), and lipase (0.03 ± 0.011) IU/mL, respectively. The cellulase enzyme activity will degrade fibers which are difficult to digest to become easily digested by the fish. Optimum pH and storage time has to be known to make efficient the use of rumen fluid to degrade fibers in feed ingredients.The study was conducted at incubation temperature of 30 °C with the pH of 5.0, 6.0, 7.0, 8.0, and 9.0 as well as the storage time of 1, 2, 3, and 4 weeks. The results showed that the cellulase enzyme activity of sheep rumen fluid was optimum at pH 8.0, that is 0.00149 IU/mL. Stability of the enzyme activity was obtained at pH 8.0 with storage time for 4 weeks.
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Judul: Ensilase rumput gajah dengan bakteri asam laktat dan enzim selulolitik serta suplementasi seng dan probiotik untuk memacu aktivitas mikroorganisme rumen
Abstrak: Pemanfaatan pakan ternak sering terbentur pada masalah kualitas pakan yang berbasiskan hijauan. Pakan yang lazim digunakan tidak mampu memenuhi kebutuhan energi, protein dan seng untuk ternak sehingga diperlukan sentuhan teknologi untuk dapat meningkatkan nilai guna pakan. Penelitian ini dirancang untuk mengetahui pengaruh suplementasi silase rumput gajah, probiotik dan garam Zn-asam lemak tak jenuh untuk kebutuhan ternak. Penelitian ini dilaksanakan di Laboratorium Mikrobiologi Balai Rekayasa Mikroba dan Genetika Puslitbang Bioteknologi, Cibinong sejak Juli 2000 hingga Januari 2001. Percobaan menggunakan Rancangan Kelompok yang pengaruh perbedaan bangsa sapi dan bobot awal dikoreksi dengan ANCOVA. Perlakuan ransum yang digunakan dalam penelitian ini ada 8 macam yaitu: (A) = 30% silase rumput gajah + konsentrat, (B) = A + inokulan Lactobacillus sp. 1A-2), (C) B+ enzim selulolitik), (D) = C + probiotik, perlakuan E, F, G dan H sama dengan perlakuan A, B, C dan D hanya pada masing-masing perlakuan tersebut ditambahkan Zn-PUFA. Data dianalisis dengan sidik ragam dan diuji dengan uji kontras ortogonal. Penelitian ini menggunakan 8 ekor sapi jantan pada fase pertumbuhan yang terdiri dari 4 ekor sapi Holstein dengan bobot sekitar 323 ± 14.6 kg dan 4 ekor sapi Peranakan Ongole dengan bobot badan sekitar 221 ± 18 kg. Tiap periode terdiri dari 4 minggu dengan 14 hari masa adaptasi dan 14 hari masa pengamatan. Peubah yang diukur adalah: Ph silase, kadar asam laktat silase, jumlah populasi mikroorganisme rumen meliputi protozoa rumen, bakteri rumen total, bakteri asam laktat, bakteri selulolitik, bakteri amilolitik, bakteri pengguna laktat dan fungi fibrolitik serta aktivitas fermentasi rumen meliputi, NH3 rumen, pH rumen dan VFA individual. ...
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Judul: Graphology Analysis Based on Letter a and t Using Perceptron.
Abstrak: Graphology or handwriting analysis is a method of identifying, analyzing, evaluating, and understanding personality through the strokes and patterns revealed by handwriting. A person who can analyze handwriting is called a graphologist. A graphologists can be subjective in their assesments different graphologist can have different analysis of the same handwriting. Therefore, a computer technology may help to minimize the subjectivity. This research used perceptron to analyze personality based on handwriting. Perceptron is one method of neural network. This research analyze two letters to letter a and t image. Letter a are represented by 135 images, consisting of 81 images as training data and 54 images as testing data. There are 150 images used for t images, consisting of 90 images as training data and 60 images as testing data.There are 5 experiments consisting of 2 experiments for letter a and 3 experiments for letter t. The result is the character of each class letter a and t where each parameters there are 3 classes. The accuracy of letter t and letter a was 55% and 88.89% respectively.
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