Judul: Studi Kasus Infeksi Parasit Darah pada Sapi Potong di Kabupaten Subang, Jawa Barat
Abstrak: This study describes prevalence of blood parasites and parasitemia level using blood smear. Result of the experiment of blood samples in 62 cattle from Subang Regency showed a blood parasite infection by Babesia sp., Theileria sp., and Anaplasma sp. The inapposite maintenance management was thought to be main factor causing infection. This supported by hipotesis chi square test which states, that maintenance management relates to prevalence. In this research, also performed calculations average parasitemia to measure level of parasitosis by age level and gender cattle. The calculations show parasitosis level mild because obtained average parasitemia <1%. Statistical tests average parasitemia (Babesia sp., Theileria sp., and Anaplasma sp.) age level significantly different (p<0.05) in calf and adult cattle. By sex were also obtained significantly different results (p<0.05) in bulls and cows for blood parasites Anaplasma sp.
Keyword: Theileria, Subang Regency, Babesia, Anaplasma

Judul: Kajian Penyakit Parasit Darah pada Sapi Potong Peternakan Rakyat di Kecamatan Ujungjaya, Kabupaten Sumedang, Jawa Barat
Abstrak: The purpose of this study was to determine the prevalence, risk factor and parasitemia blood parasite based on age and sex category on cattle in Ujungjaya sub-district, Sumedang regency, West Java. Blood samples were collected from 139 cattle in July 2012. Thin blood smears were made on glass slide, fixed in methanol, stained with Giemsa 10% and observed using a microscope with 1000x magnifications. The amount of intraerythrocytic parasite counted for every 500 red blood cells. The potential of risk factor in regard with age, sex, ways to raise, flies and tick control were analyzed with chi-square. The result showed that the highest prevalence was observed in Anaplasma sp. (38.8%), followed by Babesia sp. (33.8%), and Theileria sp. (22.3%). The prevalence of babesiosis and anaplasmosis are influenced by age and ways to raise (p<0.05), while theileriosis had not significantly different. Sex did not affect the level of prevalence. The prevalence of babesiosis is influenced by flies and tick control (p<0.05), while anaplasmosis and theileriosis did not differ significantly. In general, the level of parasitemia increased along with increasing by age. The parasitemia of babesiosis in cow had differently with bull (p<0.05), while anaplasmosis and theileriosis had not significantly different. Percentage parasitemia at various age and sex have the same value that is <1%, which is relatively mild levels of parasitemia.
Keyword: Ujungjaya, risk factor, prevalence, level of parasitemia, intraerythrocytic parasite

Judul: Peran Surfaktan Setiltrimetilamonium Bromida dan Natrium Dodesil Sulfat pada Sintesis ZnO dengan Metode Hidrotermal
Abstrak: Zno crystal is the main preference material in various applications recently, such as in semiconductors, ultraviolet lasers, and catalysts. This study aims to synthesize ZnO with addition of surfactant. ZnO crystals were synthesized by reacting ZnSO4, KOH, and surfactants using hydrothermal method. The first step was to determine the best ratio of ZnSO4: KOH (1:2; 1:3; 1:4, and 1:5) based on X-ray diffraction. The second step was to evaluate the role of surfactan cetyltrimethylammonium bromide (CTAB) and sodium dodecyl sulfate (SDS) on the synthesis of ZnO crystals. The result of this study showed the best ratio of ZnSO4:KOH was 1:3, based on the least of impurities and the highest degree of crystallinity (85.64%). The addition of surfactant CTAB and SDS in the synthesis of ZnO increased the degree of crystallinity, which were 98.28% and 92.17%, respectively. Based on mathematical calculation using Scherrer equation, the crystal size without surfactant was 32 nm, whereas with CTAB and SDS the crystallited size were 28 nm and 29 nm, respectively. The degree of crystallinity and crystal size indicated that CTAB surfactant produce ZnO crystals with the best characteristics as compared to SDS surfactant or without surfactant.
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