Judul: Morfopatologi usus broiler setelah pemberian minyak ikan dan vitamin E sebagai imunomodulator dan paparan virus Infectious Bursal Disease
Abstrak: Penelitian ini bertujuan untuk mengetahui gambaran histopatologi usus broiler yang ditantang virus Infectious Bursal Disease (IBD) setelah pemberian minyak ikan dan vitamin E sebagai imunomodulator dalam ransum. Penelitian ini menggunakan ayam broiler strain CP 707 berumur satu hari (DOC) yang berjumlah 190 ekor, minyak ikan 6 persen, dan vitamin E 200ppm, virus IBD 106 LD50 per ml. Vaksinasi dengan vaksin Newcastle Disease (ND) 107 EID50 per ml dan IBD 107 EID50 per ml. Perlakuan dibagi atas 5 kelompok yang terdiri atas: A (diberi minyak ikan dan vitamin E, divaksin, tanpa ditantang virus IBD); B (diberi minyak ikan dan vitamin E, tidak divaksin, tanpa ditantang virus IBD); C (diberi minyak ikan dan vitamin E, tidak divaksin, ditantang virus IBD); D (diberi minyak ikan dan vitamin E, divaksin, ditantang virus IBD; dan E (tidak diberi minyak ikan dan vitamin E, divaksin, ditantang virus IBD). Nekropsi dilakukan pada saat ayam berumur 15, 30, 37 dan 44 hari, dikoleksi organ ususnya bagian duodenum dalam buffer neutral formalin (BNF) 10 persen dan dibuat preparat histopatologi dengan pewarnaan Hematoxylin Eosin (HE). Pengamatan histopatologi dilakukan secara deskriptif kualitatif menggunakan mikroskop dengan pembesaran obyektif 10 kali dan 40 kali terhadap 10 lapang pandang, kemudian dirata-ratakan. Pada kelompok yang diberi minyak ikan, vitamin E dan ditantang virus IBD ditemukan oedema dan atau kongesti. Pada kelompok yang tidak diberi minyak ikan, vitamin E dan ditantang virus IBD ditemukan peradangan, perdarahan, penebalan dan deskuamasi vili usus. Hasil penelitian ini menunjukkan bahwa minyak ikan dan vitamin E yang ditambahkan dalam ransum broiler dan ditantang virus IBD dapat menekan kerusakan vili usus broiler.
Keyword: Morfopatologi usus,, Minyak ikan,, Imunomodulator

Judul: Kajian vaksinasi Infectious Bursal Disease (IBD) dengan uji serologi dan Imunohistokimia pada broiler
Abstrak: In Indonesia,Infectious Bursal Disease (IBD)has been an important poultry disease because of its immunosuppressive and mortality impacts.To prevent the disease, avariety ofvaccines containing different IBD virus strainsare currently available in the market. This study was aimed to compare IBD vaccination strategies using 3 different vaccines in broiler chicken followed by challenge using Indonesian field virus (Kediri strain from East Java, Indonesia). There were 8 broiler groups, group I as infection control (did not vaccine, but infected), and group NI as vaccine negative control (did not infected, and did not vaccine). Vaccine used in this study are vaccine strain W2512 (intermediate plus vaccine) which applied at hatchery, vaccine strain D78 (intermediate vaccine) which applied at 13 days and vaccine strain 228E (intermediate plus vaccine) which applied at 13 days. Evaluation antibody titer by using Enzyme Linked Immunosorbent Assay/ELISA method at 21 and 29 days, demonstrated that there were no significantly difference among all groups. Applied of vaccination made decreased in bursal index while infection of IBD will increasing in bursal index. Immunohistochemistry works showed that there were positive immunoreactivities results by using field virus primary antibody in both vaccinated groups and infected groups
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Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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