Judul: Respon Fisiologis dan Kinerja Ayam Sentul Umur 5-8 Minggu pada Kandang Bersuhu Netral dan Tinggi
Abstrak: A total of 96 Sentul chickens aged 5 to 8 weeks consist of 48 males and 48 females were used in this experiment. These chickens were kept in litter in semi closed house. The experiment was factorial complete randomized designed with sex (male and female) and housing temperature (23 °C dan 30 °C) as factors. Physiological responses (rectal temperature and panting) as well as productive performances (feed consumption, body weight gain, feed conversion, and mortality) were measured. The results showed that housing temperatures significantly affected the rectal temperature and panting. Feed intake was significantly differed between male and female as well as body weight gain (P < 0.05) with males intake and gain more than female. Feed conversion differed significantly between housing temperatures (P < 0.01). No mortality was observed during experiment. The chicken reared under neutral temperature revelead better productivity than those under high housing tempeterature.
Keyword: physiological responses., panting, heat stress, chicken

Judul: Performa F1 antara Ayam Sentul X Kampung dan Ayam Pelung X Sentul pada Umur 0-12 Minggu
Abstrak: The experiment aimed to observe growth performance of 3 native chicken crossed. The materials used in this experiment were 22 day old chick (DOC) resulted of natural mating between male pelung and female sentul chicken (PS) and 113 DOC resulted of natural mating between male sentul and female kampung chicken (SK). Feeds were given during experiment divided into 3 phases that were BR-21E 100% for chicken between 0-3 weeks of age, rice bran 20% and BR-21E 80% for 4 week age, and grower feeds rice bran 40% and BR-21E 60% for chicken between 5-12 weeks. Variables which recorded weekly were body weight until 12 weeks of age, weight gain, feed consumption, feed conversion, and mortality. The t-test was used to compare data of performance between two sexes and between two cross system (PS and SK). The results showed that body weight at 12 weeks of crossbred (PS) male was significantly higher than SK (P<0.01) also female (P>0.05). Feed consumption and feed conversion were not significantly different (P>0.05). The mortality rate during the experiment were 4.54% for crossbred PS and 7.07% for SK. SK and PS can be applied to increase meat production.
Keyword: performance, sentul chicken, pelung chicken, kampung chicken

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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