Judul: Sterols component of katuk leaves extract (Sauropus androgynus) and its relation to japanese quail reproduction system
Abstrak: Katuk (Sauropus androgynus L Merr) is known to contain carotenoids, vitamin E, vitamin C, protein, and sterol compounds. This study was aimed to determine whether phytosterol in Sauropus androgynus (SA) leaf affected the reproductive system of female quails. One hundred and fifty female quails were raised from 2-27 weeks old, divided into thre e treatment diets, with five replicates with 10 quails in each replicate. The treatment diets were: 1) Control group: diet without katuk leaf meal; 2) Diet with 9% SA ethanol extract (SAE); 3) Diet containing 9% SA meal (SAM). The oviduct grew more rapidly (p<0,05) in SAM-fed quails than that of the control group and SAE-fed quails at 5 weeks old. In addition, the body weight of SAM -fed quails were significantly greater (p<0.05) than that of the SAE and the control group at 5 weeks old.
Keyword: Ransum daun katuk, Fitosterol, Sistem reproduksi puyuh

Judul: Evaluasi pemberian daun katuk(Sauropus androgynus) dalam ransum terhadap kadar kolesterol kuning telur dan karkas ayam petelur
Abstrak: Katuk leaves (Sauropus androgynus) has been using for many years as a medicinal plant and has a capability to increase milk secretion. Farmers have been using katuk leaves as feed supplement for dairy cattles as to increase milk production. So far, there is no report as to whether katuk leaves have been used in laying hens diet. It is estimated that katuk leaves have physiological effects in the body to prevent the synthesis of bile acid secretion and therefore would decrease the production of cholesterol. The objective of this research is to study the effect of katuk leaves addition in the diet on the level of cholesterol in the egg yolk and carcass of laying hens. Seventy two laying hens at the age of 32 weeks, were divided into 4 treatment groups with 3 replications and 6 laying hens each replications. The laying hens were raised for 24 weeks. The treatments were Control (diet without katuk leaves), T1 (diet with 5% katuk leaves), T2 (diet with 10% katuk leaves), and T3 (diet with 15% katuk leaves). This research was carried out from May 2002 until September 2002 in the Center for Life Sciences Study, Bogor Agricultural University. The experimental design was Completely Randomized Design. The data was analyzed using Analysis of Variance (ANOVA). and continued with Contrast Orthogonal Test if the treatment were significantly different. It was concluded that katuk leaves could decrease the level of cholesterol in the egg yolk and carcass cholesterol in laying hens. The addition of katuk leaves decreased egg yolk cholesterol significantly as compared to that of the Control. The addition of katuk leaves in the diet also decreased the level of cholesterol in the carcass, except the carcass from T3 group. The feed consumption of the Control, T1 and T2 groups were higher than those fed the T3 diet. The same pattern occurred for the egg production. The best feed conversion were from the groups fed the T3 and the control diet.
Keyword: katuk leaves (Sauropus androgynus), cholesterol, laying hens, egg yolk, carcass

Judul: Ongkos irregularitas sebuah graf
Abstrak: Tulisan ini mengkaji bagaimana cara mcngubah sualu graf menjadi graf yang irregular, yaitu dengan menambahkan beberapa edge pacta graf asal. Untuk sebuah graf G, didefinisikan ongkos irregularitas ic(G) yaitu jumlah minimum tambahan edge sedemikian sehingga menjadi Multigraf H yang merupakan multigraf G irregular. Akan ditentukan ongkos irregularitas dari graf regular, graf mendekati regular, dan graf mendekati irregular.
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