Judul: Performa ayam broiler yang diberi hormon testosteron dengan dosis bertingkat
Abstrak: Testosterone is a hormone that has an important role in secondary sex characteristics. Testosterone was known as androgenic and anabolic hormone. This research used testosterone to observe the performance of broiler chickens. Fourty four broiler chickens 15 days old were divided into 4 groups: K (control), T1 (dose 1 mg), T2 (dose 2 mg), and T3 (dose 4 mg). Parameters measured were body weight, feed and water consumption, feed conversion ratio (FCR), and mortality. The results showed that testosterone dose 1 and 4 mg could increase the daily body weight gain significantly (p<0.05) in broiler chickens aged between 15 and 18 days old. Testosterone dose 2 mg could increase the daily body weight gain significantly (p<0.05) in broiler chickens aged between 21 and 24 days old. Final weight, the amount of feed and water consumption, feed conversion ratio (FCR), and mortality of chickens given testosterone did not show any difference compare with control.
Keyword: broiler, daily body weight gain, FCR, final weight, testosterone

Judul: Gambaran Kecernaan Pakan Ayam Broiler yang diberi Testosteron dengan Dosis Bertingkat
Abstrak: Testosterone is one of the anabolic hormone that can trigger the growth of muscle mass as well as develop and maintain bone. Testosterone hormone can stimulate secretion of other hormones such as growth hormone. This research was conducted to describe the administration of testosterone hormone with multilevel concentration on broiler chicken’s feed digestibility through feces analysis. Fourteen days of twenty broiler chickens were used in this experiment, with 4 groups (K, T1, T2, and T3). K was control groups, T1, T2, and T3 were broiler chicken which given 1, 2, and 4 mg testosteron respectively. Feces is waste of metabolism which can be used for proximate analysis. Feed digestibility values was obtained from the difference percentage between the value of proximate analysis of feed and feces which divided by the value of the proximate analysis of feed. The highest digestibility values of fat (79.20%), protein (65.37%), and carbohydrates (69.79%) was in T3 groups. Therefore administration of 4 mg testosterone could increase the body weight.
Keyword: digestibility, feces, hormones, proximate, testosterone.

Judul: Algoritme LLL dan Aplikasinya dalam Pembongkaran Sistemkripto Knapsack Merkle-Hellman
Abstrak: LLL algorithm is an algorithm that can be used to determine an approximation of the shortest vector in a lattice. Size reduction algorithm is an important step of LLL algorithm. The LLL algorithm can be applied in many elds. This paper shows how LLL algorithm can be used in breaking one of the famous cryptosystem, namely the Merkle-Hellman knapsack cryptosystem. Merkle-Hellman knapsack cryptosystem is an asymmetric cryptosystem using the subset sum problem as the support of security. Subset sum problem can be transformed into the problem of determining shortest vector in a lattice, so that LLL algorithm can also be used to solve the subset sum problem. Since the subset sum problem can be easily solved by applying LLL algorithm, then the Merkle-Hellman knapsack cryptosystem can also be easily be destructed.
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