Judul: Gambaran Darah dan Performa Produksi Ayam Kampung serta Ayam Ras Petelur pada Kandang Terbuka
Abstrak: Chickens need a cool ambient rearing temperature. Rearing chickens in open house on tropical regions such as Indonesia can cause physiological changes. Physiological conditions can be seen from the blood profile. Normal blood profile will support the achievement of optimal production. The aim of this research was to study the blood profile and its association with production aspect on kampung chicken and laying hen that were reared in open house . Blood profile parameters were including the number of erythrocytes, hematocrit, hemoglobin, leucocytes, and the percentage H/L ratio. Production performance parameters were feed intake, hen day production, egg weight, feed conversion, and mortality. The number of erythrocytes, hemoglobin, leucocytes of kampung chicken and laying hen were included in the normal range. H/L ratio of kampung chicken (1.45) was lower than laying hen (4.09). Feed consumption, hen day production, egg weight of kampung chicken were appropiate to standards, although its performance was lower than the laying hen. It can be concluded that kampung chicken better adapt than the laying hen, if it reared in open house with high ambient temperature
Keyword: production performance, blood profile, laying hen, kampung chicken

Judul: Profil Darah Ayam Petelur pada Sistem Pemeliharaan dan Suhu Kandang yang Berbeda
Abstrak: Darah berperan sebagai sarana transportasi tubuh, membantu pengaturan suhu tubuh, menjaga konsentrasi air dan elektrolit dalam sel, serta melawan mikroorganisme. Perbedaan temperatur dan sistem perkandangan (cage dan litter) dapat berpengaruh terhadap respon biologis ayam petelur. Penelitian ini bertujuan untuk mempelajari profil darah ayam petelur pada sistem pemeliharaan dan suhu kandang yang berbeda. Sebanyak 72 ekor ayam petelur (berumur 48 minggu), dari strain Lohmann digunakan pada penelitian ini. Ayam tersebut dibagi ke dalam 4 ruangan, dan setiap ruangan diisi dengan 18 ekor ayam petelur. Ruangan tersebut terbagi atas kandang litter koloni dengan suhu netral (25 ), kandang cage individu dengan suhu netral, kandang litter koloni dengan suhu tinggi (30 ), dan kandang cage individu dengan suhu tinggi. Profil darah diamati dengan memeriksa nilai butir darah merah (BDM), hematokrit, hemoglobin, butir darah putih (BDP), heterofil, limfosit, monosit, eosinofil, dan basofil. Data dianalisis ragam dengan pola RAL faktorial 22. Hasil dari penelitian ini adalah perbedaan suhu dan sistem perkandangan tidak berpengaruh nyata (P>0.05) terhadap nilai eritrosit, PCV, hemoglobin, limfosit, H:L, eosinofil dan basofil. Perlakuan suhu dan sistem perkandangan berpengaruh nyata (P<0.05) terhadap heterofil dan monosit. Suhu tinggi menurunkan jumlah heterofil, tetapi meningkatkan jumlah monosit. Stres panas tidak hanya terjadi akibat suhu lingkungan yang tinggi, tetapi juga dipengaruhi oleh aktifitas metabolisme tubuh
Keyword: blood, cage, laying hens, litter, temperature

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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