Judul: Respon penambahan di-metionin pada ransum mengandung aflatoksin terhadap performa ayam broiler
Abstrak: Aflatoxin is a secondary metabolite from Aspergillus flavus and A. parasiticus that grow on different types of feedstuffs, especially in corn. The addition of methionine in the diet increased the growth, repaired body tissue and increased body resistance against disease and toxic from aflatoxin at a certain level. The experiment was arranged with factorial completely randomized design with four replications, factor A was the level of DL-methionine (0%, 0.25% and 0.35% for starter; 0%, 0.20% and 0.30% for finisher) and factor B was the level of aflatoksin (0 ppb and 150 ppb). Variables measured were water and feed intake, body weight gain, feed conversion, and mortality. The results showed that water and feed intake, and body weight gain increased for finisher broiler fed diet added with DL-methionine. Addition of 0.20% and 0.30% DL-methionine in the diet containing 150 ppb aflatoxin increased water intake. Feed intake and weight gain were also higher for broiler fed diets added with 0.20% DL-methionine. There were no interaction between aflatoxin and addition of DL-methionine on the measured variables. It is concluded that addition of DLmethionine in rations containing aflatoxin affected performance of broiler in finisher period.
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Judul: Pengaruh Pemberian DL-metionin pada Ransum yang Terkontaminasi Aflatoksin terhadap Organ Dalam serta Saluran Pencernaan Ayam Broiler
Abstrak: Aflatoksin adalah senyawa racun yang merupakan metabolit sekunder dari Aspergillus flavus yang toksik jika dikonsumsi oleh ternak. Aspergillus flavus tumbuh pada media seperti jagung dan pakan, pada penyimpanan dan penanganan yang kurang baik. Aflatoksin pada peternakan dapat menimbulkan kerugian ekonomi yang cukup tinggi bagi peternak. Salah satu cara untuk menetralisir aflatoksin pada pakan adalah dengan menambahkan asam amino metionin. Penelitian ini dilakukan untuk mengetahui pengaruh penambahan DL-metionin terhadap organ dalam dan saluran pencernaan ayam broiler pada ransum yang terkontaminasi aflatoksin. Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap faktorial 3 × 3 dengan empat ulangan, faktor A adalah penambahan DL-metionin (0%, 0,25%, dan 0,35% untuk periode starter; 0%, 0,20%, dan 0,30% untuk periode finisher) dan faktor B adalah penambahan aflatoksin (0 ppb, 150 ppb, dan 300 ppb). Penelitian ini terdiri dari sembilan perlakuan, yaitu R1: Ransum basal (RB) + 0 ppb aflatoksin + 0% DL-metionin; R2: RB + 150 ppb aflatoksin + 0% DL-metionin; R3: RB + 300 ppb aflatoksin + 0 % DL-metionin; R4: RB + 0 ppb aflatoksin + 0,25% DL-metionin untuk starter dan 0,20% DL-metionin untuk finisher; R5: RB + 150 ppb aflatoksin + 0,25% DL-metionin untuk starter dan 0,20% DL-metionin untuk finisher; R6: RB + 300 ppb aflatoksin + 0,25% DL-metionin untuk starter dan 0,20% DL-metionin untuk finisher; R7: RB + 0 ppb aflatoksin + 0,35% DL-metionin untuk starter dan 0,30% DL-metionin untuk finisher; R8: RB + 150 ppb aflatoksin + 0,35% DL-metionin untuk starter dan 0,30% DL-metionin untuk finisher; R9: RB + 300 ppb aflatoksin + 0,35% DL-metionin untuk starter dan 0,30% DL-metionin untuk finisher.
Keyword: Aspergillus flavus, completely randomized design, Duncan multiple range test, giblets weight, digestive tract

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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