Judul: Prevalensi Kasus Kriptosporidiosis pada Sapi Potong di Kecamatan Cipatujah dan Cikalong, Tasikmalaya, Jawa Barat
Abstrak: Cryptosporidiosis is caused by Cryptosporidium sp. often occurs in cattle. This research aimed to determine the prevalence of Cryptosporidium sp infection in cattle at Cipatujah and Cikalong regency, Tasikmalaya, West Java. The research started in October 2012 to June 2013 used fecal specimens from 203 cattles of 117 farmers. Based on gender, sample consisted of 168 cows and 35 bulls. Based on age, consisted of 151 adult cattles, 24 heifers and 28 calves. Sample of feces were examined by floating sheather sugar, then afterwards observed using a light microscope. Percentage prevalence of Cryptosporidium sp at Cipatujah regency (13.08%) was higher than at Cikalong regency (8.33%). The infection of Cryptosporidium sp was higher in calves and heifers than adult cattles. The result of statistical tests shows the prevalence of cryptosporidiosis infection based on gender at Cipatujah regency is significant difference (P<0.05), but based on age at Cipatujah and Cikalong regency are no significant difference (P>0.05).
Keyword: prevalence, gender, Cryptosporidium sp, cattle, age

Judul: Kajian Kasus Kriptosporidiosis pada Sapi Potong di Kecamatan Ujung Jaya, Sumedang, Jawa Barat
Abstrak: Cryptosporidiosis is a zoonoses caused by Cryptosporidiumspecies. This research were aim to study and identification the prevalence of C. parvum in cattle on Ujung Jaya Regency, Sumedang, West Java. This research studied 60 fecal specimens, consisted of 10 calves, 9 heifers, and 41 adult cattles. And based on gender, consisted of 46 cows and 14 bulls. Samples were examined by floating sheater sugar and microscopic examination. The prevalence of Cryptosporidiosis on Ujung Jaya Regency was 11.67%. Based on statictical analysis, age and gender could not increase the prevalence of Cryptosporidiosis significantly (P>0.05). And based on the descriptive analysis the prevalence of Cryptosporidiosis in bulls (14.29%) higher than in cows (10.87%), and for adult cows (7.32%) is lower than neonate calf (20%) and calf (22.22%).
Keyword: Bogor Agricultural University, Cryptosporidiosis, prevalence, cattle, Ujung Jaya  Sumedang

Judul: Sintesis Nanorod Seng Oksida (ZnO) dengan Metode Sonokimia
Abstrak: Gelombang ultrasonik telah digunakan untuk membantu sintesis ZnO. ZnO terbentuk dari campuran ZnAc dan NaOH. ZnO disintesis dengan variasi konsentrasi ZnAc 0.5 M ( ZnO 1:1 ) dan 1.5 M ( ZnO 3:1 ) yang dicampurkan dengan NaOH konsentrasi 0.5 M. Sampel yang diporoleh dikarakterisasi dengan XRD dan SEM. Karakterisasi difraksi sinar-X menunjukkan bahwa struktur kristal ZnO yang dihasilkan merupakan heksagonal dengan pertumbuhan yang dominan pada orientasi bidang nonpolar a dengan indeks hkl 101. Kristalinitas dan kemurnian kristal ZnO 1:1 lebih baik dibandingkan ZnO 3:1 ditunjukan dengan intensitas puncak difraksi sinar-X yang lebih tinggi, sempit dan tajam. Untuk ukuran kristalit ZnO 1:1 mempunyai rata-rata ukuran kristalit 30.57 ± 4.31 nm sedangkan ZnO 3:1 mempunyai ukuran rata-rata 20.25 ± 7.12 nm. Dari ukuran kristal yang terbentuk partikel ZnO termasuk nanokristal. ZnO 1:1 terbentuk batang-batang nano (nanorods) sedangkan pada ZnO 3:1 tidak terbentuk batang-batang nano (nanorods). Untuk ukuran morfologi, ZnO 1:1 mempunyai rata-rata ukuran butiran kristal 230 nm dan lebih besar dibandingkan ukuran ZnO 3:1 yang mempunyai rata-rata ukuran butiran kristal 50 nm.
Keyword: nanorot, sintesis, sonokimia, ZnO