Judul: Gambaran Darah Merah Ayam Petelur pada Awal Masa Produksi yang Dicekok dengan Ekstrak Etanol Daun Kemangi
Abstrak: Laying hens are responsive to stress which can cause a decrease in physiological status and production. Empirically, ethanol extract of kemangi leaves can cure various diseases in humans. Uses of ethanol extract of kemangi leaves in animals have not been widely applied. This research was conducted to observe the physiological status of laying hens fed ethanol extract of kemangi leaves. Red blood profile variables observed were red blood cells, hematocrit (PCV), and hemoglobin. Twelve laying hens were divided into 4 groups and each treatment group consisted of 3 chickens as replication. The first treatment group was not given ethanol extract of kemangi leaves as a control(C), the second treatment group was given orally ethanol extract of kemangi leaves with the dose of 1 mg/kg bw(P1), the third treatment group was given orally ethanol extract of kemangi leaves with the dose of 2 mg/kg bw(P2), and the fourth treatment group was given orally ethanol extract of kemangi leaves with the dose of 3 mg/kg bw(P3). The results showed that administration of ethanol extract of kemangi leaves with the dose of 1 mg/kg body weight could improve the physiological status of laying hens during the first week of treatment. Flavonoids, saponins, and tannins contained in ethanol extract of kemangi leaves are possible to improve the physiological condition of laying hens. Meanwhile, ethanol extract of kemangi leaves a dose of 2 mg/kg body weight and 3 mg/kg body weight can decrease red blood parameters in chiken
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Judul: Potensi ekstrak etanol daun kemangi sebagai sediaan antistres untuk ayam petelur
Abstrak: Ayam petelur tergolong mudah tercekam oleh perubahan lingkungan. Penelitian ini dilakukan untuk mengukur respons leukosit ayam petelur terhadap pemberian ekstrak etanol daun kemangi dan membuktikan adanya efek antistres pada kemangi. Sebanyak 16 ekor ayam petelur dibagi menjadi 4 kelompok perlakuan dengan 4 kali ulangan pada setiap kelompok perlakuan. Kelompok perlakuan I ialah kelompok kontrol yang dicekok akuades (K), kelompok perlakuan II, III, dan IV dicekok ekstrak etanol daun kemangi dengan dosis 1 (P1), 2 (P2), dan 3 mg/kg bb (P3). Darah ayam penelitian diambil pada saat ayam berumur 17–20 minggu serta diamati jumlah butir darah putih dan diferensiasi leukositnya. Hasil penelitian menunjukkan bahwa pemberian ekstrak etanol daun kemangi dosis 2 dan 3 mg/kg bb dapat mempertahankan jumlah butir darah putih ayam petelur. Pemberian ekstrak etanol daun kemangi tidak menyebabkan stres pada ayam petelur yang diketahui dari rasio H/L yang mendekati kontrol (K). Flavonoid yang terdapat pada ekstrak etanol daun kemangi berpotensi meningkatkan efek antistres pada ayam petelur.
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB, Ethanolic extract of kemangi leaves, Flavonoid, H/L ratio, Laying hens

Judul: Penggunaan Teorema Homeomorphy 2-Manifold dan Teorema Euler Poincare pada Torus 𝑇�� dan Simplicial Complex 𝐾��
Abstrak: Two dimensional topological spaces are said to be homeomorphic if they have the same topological invariant, where one of topological invariant used is an Euler characteristic. Homeomorphy 2-Manifold’s Theorem and Euler Poincare’s Theorem are used to distinguish two topological spaces. Homeomorphy 2-Manifold’s Theorem uses Euler characteristic to identify two dimensional topological spaces. Euler Poincare’s Theorem is an alternative way to find Euler characteristic with Betti number, which is topological invariant as well. The objective of this paper is to investigate the homeomorphism of torus 𝑇����� and simplicial complex 𝐾�����. Topological space torus and simplicial complex 𝐾����� have the same Euler characteristic, which is two. Based on Homeomorphy 2-Manifold’s Theorem topological space torus 𝑇����� and simplicial complex 𝐾����� is homeomorphic.
Keyword: simplicial, torus, Euler, homeomorphism, topology