Judul: The Efectifity of Combination Turmeric, Garlic with Zinc on Performance and Immune Response of Eschericia coli – Challenged Broiler.
Abstrak: Industri perunggasan sangatlah penting dalam penyediaan protein hewani. Antibiotik sering digunakan untuk mencegah dan mengendalikan penyakit, tetapi antibiotik dapat menimbulkan residu dalam karkas ternak. Bawang putih dan kunyit merupakan tanaman obat tradisional yang memiliki zat aktif allisin dan kurkumin . Zat aktif ini dapat digunakan untuk memperbaiki performa, status kesehatan dan meningkatkan respon imun sebagai antibakteri. Mineral Zink (ZnO) berfungsi sebagai antioksidan dan meningkatkan daya tahan tubuh ternak. Penelitian ini dilakukan untuk melihat pengaruh pemberian kombinasi kunyit (1.5%), garlic (2.5%) with ZnO (180 ppm) terhadap performa dan respon imun ayam pedaging yang diinfeksi Escherichia coli. Data yang diperoleh dianalisis statistik dengan menggunakan Rancangan Acak Lengkap (RAL) yang dilanjutkan dengan uji lanjut bila terdapat perbedaan diantara perlakuan. Dua ratus ekor DOC dibagi ke dalam 5 perlakuan dan 4 ulangan, setiap ulangan terdiri dari 10 ekor. Ransum perlakuan R1 (ransum basal sebagai kontrol negatif/ ayam sehat), R2 (ransum basal sebagai kontrol positif/ ayam diinfeksi Escherichia coli), R3 (ransum basal + 1.5% serbuk kunyit + ZnO 180 ppm/ ayam diinfeksi Escherichia coli), R4 (ransum basal + 2.5% serbuk bawang putih + ZnO 180 ppm/ ayam diinfeksi Escherichia coli), dan R5 (ransum basal + antibiotik/ ayam diinfeksi Escherichia coli). Pemeliharaan dilakukan selama 35 hari, ransum dan air minum diberikan ad libitum. Hasil dari penelitian ini menunjukkan bahwa pemberian kombinasi kunyit 1.5% dengan ZnO 180 ppm dan kombinasi bawang putih 2.5% dengan zink 180 ppm dalam ransum mampu memperlihatkan performa dan status kesehatan yang lebih baik. Pemberian kombinasi bawang putih 2.5% dengan ZnO 180 ppm dalam ransum meningkatkan kadar imunoglobulin serum, sehingga dapat menjadi alternatif sebagai antimikroba alami dalam ransum ayam pedaging.
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Judul: Efek Pemberian Kombinasi Herbal dan Zink Terhadap Jumlah Eritrosit, Nilai Hematokrit, dan Kadar Hemoglobin Ayam Broiler yang Diinfeksi Escherichia coli
Abstrak: This study aims to find out the effect of combine turmeric (Curcuma domestica Val.) or garlic (Allium sativum Linn.) with Zn on erythrocyte, hematocrit and hemoglobin of broiler chickens infected by Escherichia coli. 200 DOC unsexed were devided into five treatments and four replications, with ten chicks in each replicates. The treatment were K0 (basal diet as a control / healthy chickens) without infected by E. coli, while 4 other treatments that K (-) (basal diet as a negative control), P1 (basal diet + turmeric powder + 1.5% ZnO 180 ppm), P2 (basal diet + 2.5% garlic powder + 180 ppm ZnO), and K (+) ( basal diet + treatment with antibiotics) infected by E. coli. E. coli is given at the age of 3 weeks at dose of 108 CFU/ml, 1 ml. Group K (+) were given antibiotics (Colimas®) one day after infected by E. coli for 3 days with dose of medication. Blood sampling performed at the age of 3 weeks (before infected) 1 and 2 weeks after infected. Blood test includes the number of erythrocytes, hematocrit values and level of hemoglobin. The results showed the number of erythrocytes, hematocrit values, and level of hemoglobin at treatment P1(basal diet + 1.5% turmeric powder + 180 ppm of ZnO + infected by Escherichia coli) tend to be better than other treatments. Erythrocytes profile on P1 is similar to the treatment given antibiotics (K+). The results of this study concluded that combinations turmeric and Zn in the feed can be used as an alternative of colibacillosis treatment.
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Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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