Judul: Profil leukosit pada ayam broiler yang diberi ekstrak tanaman obat
Abstrak: The objective of this experiment was to study the effects of extract administration of temulawak (Curcuma xanthorriza Roxb.), temu ireng (Curcuma aeruginosa Roxb.), sambiloto (Andrographis paniculata Nees.), and meniran (Phyllanthus niruri Linn) on leukocytes profile in broiler. Twenty five day old chick’s were used in this experiment. The animal were divided into five groups, there were combination of (F1) temulawak, temu ireng, sambiloto, and meniran extracts; (F2) temulawak, temu ireng and meniran extracts; (F3) temulawak and temu ireng extracts; (F4) sambiloto and meniran extracts; and (F5) untreated as control. The extracts were gave for 28 days through the oral route. The chickens were taken randomly 3 heads of each groups on the last day of treatment for blood sampling. Blood samples were taken from brachialis veins to determine the leukocyte profiles. Results of this study showed that percentage of lymphocytes increased in the group F2, F3, and F4, with a marked increased in the group F4. The percentage of monocytes increased in all treatment groups compared to the control group. The precentage of heterophils and eosinophils increased in the F1 group compared to the control group, while percentage of basophils increased in the F2 group compared to the control group. In conclusion, extracts of temulawak and temu ireng administration were the best combination to increase immune system.
Keyword: broiler chicken, leukocyte, medicinal plants.

Judul: Pengaruh Formula Ekstrak 4 Tanaman terhadap Aktivitas dan Kapasitas Fagositosis Makrofag Peritoneum Ayam yang Ditantang dengan Bakteri Staphylococcus aureus
Abstrak: The purpose of this research is to observe the effects of four medicinal plants extract formulas (Temulawak/Curcuma xanthorriza Roxb., Temu Ireng/Curcuma aureginosa Roxb., Meniran/Phyllanthus niruri Linn., and Sambiloto/Andographis paniculata Nees) on chicken’s peritoneal macrophage activity and capacity by counting the number of active macrophage and the number of phagocytised bacteria. Fifteen heads of day old chick were divided into five groups with various treatments. The treatments were; (1) F1: extract combination of Temulawak, Temu Ireng, Meniran, and Sambiloto; (2) F2: extract combination of Temulawak, Temu Ireng, and Meniran; (3) F3: formula Temulawak and Temu Ireng; (4) F4: extract combination of Meniran and Sambiloto; and (5) untreated as control. The chikens were treated for 28 days. Result showed that all combinations of plant extract formula treatment increased the activity and capacity of chicken peritoneal macrophage compared to the control group. For activity, group F3 was the best result (p<0.01), while for capacity the group F4 give the highest response (p<0.01). In general we concluded that combination of Meniran and Sambiloto (group F4) was the best combination on chicken peritoneum macrophage activity and capacity.
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Judul: Cycle Hamilton pada Graf Lengkap, Graf Regular, dan Graf 2-Connected 4-Regular Berorder Kurang dari Sepuluh
Abstrak: Suatu graf disebut graf Hamilton apabila graf tersebut memuat cycle Hamilton, yaitu cycle yang melewati setiap vertex tepat satu kali. Menentukan keberadaan cycle Hamilton pada suatu graf dapat menggunakan syarat cukup yang berupa teorema-teorema yang telah diperkenalkan sejak tahun 1950-an. Beberapa syarat cukup yang dibahas dalam karya ilmiah ini adalah syarat cukup yang berhubungan dengan graf lengkap dan graf regular. Suatu graf lengkap berorder 𝑛������ ≥ 3 dan graf r-regular berorder 𝑛������ ≤ 2𝑟������ + 1 merupakan graf Hamilton, Karena kedua graf tersebut memuat cycle Hamilton. Selanjutnya, syarat cukup tersebut digunakan untuk menentukan keberadaan cycle Hamilton pada graf 2-connected 4- regular berorder kurang dari 10.
Keyword: graf Hamilton, graf regular, graf lengkap, graf 2-connected 4-regular