Judul: Influence of Liquid Methionine Supplementation in Drinking Water to Performance, Carcass Percentage and Viscera of Broiler Finisher Periods
Abstrak: Ayam broiler dibudidayakan karena memiliki sifat produski yang relatif cepat. Produksi ayam broiler ditentukan oleh berbagai faktor termasuk kualitas pakan. Umumnya nutrien dalam pakan komersil sudah mencukupi kebutuhan ayam broiler meskipun memiliki standard kebutuhan yang berbeda. Pakan komersil yang dipakai peternak kualitas nutriennya bisa menurun karena proses transportasi dan penyimpanan yang kurang baik. Penambahan metionin cair dalam air minum diharapkan dapat mengatasi penurunan kualitas metionin karena masalah diatas. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan metionin cair sebanyak 0,05% dan 0,1% terhadap performa, persentase karkas dan organ dalam ayam broiler periode finisher. Penelitian ini dilaksanakan dari bulan Juli hingga Agustus 2008 di kandang panggung peternak komersil di Desa Pamijahan, Leuwiliang, Kabupaten Bogor. Penelitian ini menggunakan ayam broiler umur sehari (DOC) strain Cobb sebanyak 3600 ekor yang dibagi ke dalam sembilan petak. Ransum yang digunakan adalah ransum periode finisher dari tiga pabrik yang berbeda. Penambahan metionin cair dalam air minum dengan konsentrasi 0%, 0,05% dan 0,1%. Rancangan yang digunakan adalah Rancangan Acak Kelompok (RAK). Peubah yang diukur adalah konsumsi ransum, konsumsi air minum, pertambahan bobot badan, konversi ransum, bobot hidup, bobot karkas, bobot hati, jantung, limpa, ginjal, lemak abdomen, pankreas, gizzard dan panjang usus halus. Pengambilan data untuk mengukur bobot badan menggunakan sampel sebanyak 10% dari populasi. Data yang diperoleh dianalisis dengan sidik ragam (ANOVA), jika berpengaruh nyata dilakukan uji kontras ortogonal. Penambahan metionin cair sebanyak 0,05% dan 0,1% dalam air minum tidak berpengaruh terhadap performa, persentase karkas dan organ dalam ayam broiler periode finisher, hal ini disebabkan karena kualitas pakan sama baik dan tidak terjadi perubahan kandungan mentionin dalam ransum akibat pengiriman dan penyimpanan.
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Judul: Perbaikan performa ayam broiler melalui pemberian metionina sebagai imbuhan pakan
Abstrak: Methionine is a safe, economic, and high quality feed additive. A study on the effect of methionine supplementation on broiler chicken performance was conducted by using 30 broiler chickens. Broiler chickens were assigned into 3 groups: P1 (control, without methionine supplementation), P2 (0.2% methionine supplementation), and P3 (0.4% methionine supplementation). Parameters measured were growth rate, final body weight, feed efficiency (feed convertion ratio/FCR), and mortality rate. The result showed that 0.4% methionine supplementation significantly increased growth rate, final body weight, and feed efficiency (P<0.05). However, growth rate and final weight were not affected by 0.2% methionine supplementation (P≥0.05). Methionine supplementation increased broiler performance between 7-21 days of age and showed no effect after 21 days of age. It was concluded that methionine usage as a feed additive is recommended in broiler chicken with 0.4% of dose, between 7-21 days of age
Keyword: broiler chicken, methionine, FCR, body weight, mortality.

Judul: Analisis dan Implementasi Certificate Authorities (CA) pada Public Switched Telephone Network (PSTN)
Abstrak: Secure Telephone Protocol has ability to authenticate involved party and keep the secrecy of the message sent over the protocol. The secrecy of the message archieved by using symmetric key cryptographic scheme, and authentication archieved using public key cryptographic scheme. One of several party involved in the protocol and hold an important function called Certificate Authorities or CA. CA responsible for generating public key pair for other party involved in the protocol. When CA generates public key pair, several primitive cryptographic scheme used for guarantee the security of the key. Two of them are hash function SHA-1 and El-Gamal public key scheme embedded in Digital Signature Algorithm scheme. The prototype implementing the scheme above developed using Java programming language with JCE addition from Bauncy Castle. The analysis towards implemented prototype indicates that the prototype still has some flaws to be implemented in real world.
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