Judul: Prevalensi, Derajat Infeksi, dan Faktor Risiko Infeksi Parasit Darah pada Sapi Potong di Kecamatan Cikalong, Tasikmalaya
Abstrak: This research was aimed to determine the prevalence, intensity of infection, and risk factors of blood parasite infection in cattle of Cikalong subdistrict, Tasikmalaya. Blood smears samples collected from 114 cattle in Cikalong subdistrict and processed using Giemsa staining method. Quantitative evaluation of parasitemia (percentage of infected RBCs) was assesed by counting of the number of parasite erythrocytes present per 500 cells at a magnification of 1000×.The potential of risk factor in regard with livestock management were obtained by interviewing the farmer. The result showed that the highest prevalence rate of blood parasite was Theileria sp. (60.53%), followed by Babesia sp. (44.74%) and Anaplasma sp. (30.70%). Based on sex, the mean of blood parasite in bull was higher than cow. Babesia sp. and Theileria sp. infection in cow was significantly than bull (p<0.05), while Anaplasma sp. infection was not significantly (p>0.05). Based on age, the mean of blood parasite in cattle (>12 month) was higher than calf (<12 month). Babesia sp. and Anaplasma sp. infection in cattle was not significantly than calf (p>0.05), while Theileria sp. infection was significantly (p<0.05). Generally, the prevalence rate of blood parasite was influenced by livestock management, feeding, and vector control was not significantly (p>0.05).
Keyword: risk factor, prevalence, cattle, Blood parasite

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: 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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