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 di Kecamatan Cipatujah, Kabupaten Tasikmalaya, Jawa Barat
Abstrak: The purpose of this study was conducted for determine the prevalence, risk factor, and parasitaemia blood parasite based on age and sex category on cattle in Cipatujah sub-district, Tasikmalaya regency, West Java. Blood samples were collected in July 2012 from 142 cattle. Samples were processed in glass slide, stained with Giemsa 10%, and observed using a microscope with 1000x magnifications with a drop of immersion oil. The amount of blood parasite counted for every 500 red blood cells. The potential of risk factor in regard with age, sex, and livestock management which were obtained by interviewing the breeder. The result showed that the highest prevalence was observed in Theileria sp. (57.04%), followed by Babesia sp. (50%), and the lowest Anaplasma sp. (29.57%). The prevalence of theileriosis was influenced by sex and age of cattle (p<0.05), while babesiosis and anaplasmosis was not differ significantly. In Cipatujah sub-district, prevalence of blood parasite was not influenced by ways to raise and vector control. In general, the level of parasitaemia was influenced by age and the differences of sex, wherein female cattle had highest level of parasitaemia compared to male cattle, and adult cattle (>12 months) had higher level of parasitaemia more than child cattle (6-12 months) and calf cattle (0-6 months).
Keyword: risk factor., prevalence, parasitaemia, blood 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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