Judul: The Impact of The Prohibition of AGP in Feeding on The Performance and Mortality of Broiler Chicken
Abstrak: Tahun 2017 Pemerintah menerbitkan Peraturan Menteri Pertanian Nomor 14 tentang Klasifikasi Obat Hewan dimana didalamnya pelarangan penggunaan antibiotik dalam pakan dengan harapan menghasilkan pangan asal hewan yang lebih sehat dan bebas residu obat. Penelitian bertujuan untuk mengkaji seberapa besar dampak pelarangan Antibiotic Growth Promoters (AGP) terhadap performa dan tingkat mortalitas ternak ayam ras pedaging. Penelitian menggunakan data performa ayam pedaging dari peternak di Kabupaten Kuningan meliputi berat badan, feed intake (FI), feed conversion ratio (FCR), tingkat kematian dan indeks prestasi peternak (IP). Sebanyak 88 data performa dan mortalitas ayam pedaging dengan umur panen 30 hari terdiri dari 53 data performa, mortalitas ayam pedaging dan indeks prestasi peternak dari 14 peternak tahun 2013-2016 yang menggunakan pakan starter A, B dan C dengan kandungan AGP dan 35 data performa, mortalitas ayam pedaging dan indeks prestasi peternak dari 15 peternak tahun 2018-2019 menggunakan pakan starter X, Y dan Z tanpa penggunaan AGP. Langkah berikutya dilakukan uji homogenitas dengan Analisa Varian (ANOVA) terhadap data performa dan mortalitas masing-masing kelompok pakan menggunakan AGP dan tanpa AGP. Setelah masing-masing kelompok diketahui homogen, selanjutnya dilakukan analisa menggunakan uji t dengan SPSS untuk mengetahui dampak penggunaan AGP terhadap performa, mortalitas ayam pedaging dan IP peternak. Hasil penelitian menunjukkan bahwa performa ayam pedaging meliputi bobot badan (BW), feed intake (FI), feed conversion ratio (FCR) dan Indeks performa (IP) peternak dengan pemberian pakan mengandung AGP signifikan lebih baik (P<0,05) dibanding dengan pemberian pakan tanpa AGP. Adapun mortalitas tidak menunjukan perbedaan nyata (P>0.05). Keywords: Antibiotic Growth Promoters, Ayam Pedaging, Performa, Mortalitas, Indeks Performa Peternak
Keyword: Antibiotic Growth Promoters, Ayam Pedaging, Performa, Mortalitas, Indeks Performa Peterna

Judul: Efektivitas Pemberian Plantarisin dalam Ransum sebagai Feed Additive terhadap Performa Ayam Broiler
Abstrak: Penelitian ini dilakukan untuk mengevaluasi pengaruh penggunaan plantarisin sebagai alternatif Antibiotic Growth Promotor terhadap performa ayam broiler. Ternak yang digunakan adalah ayam broiler jantan strain New Lohmann (MB 202) sebanyak 280 ekor. Penelitian dilakukan selama 5 minggu. Metode yang digunakan dalam penelitian adalah Rancangan Acak Lengkap (RAL) dengan 7 perlakuan dan 4 ulangan. Perlakuan yang digunakan adalah P0: Ransum Kontrol (ransum tanpa penambahan plantarisin), N1: Ransum Kontrol + Plantarisin Native 0.05%, N2: Ransum Kontrol + Plantarisin Native 0.10%, N3: Ransum Kontrol + Plantarisin Native 0.15%, R1: Ransum Kontrol + Plantarisin Rekombinan 0.05%, R2: Ransum Kontrol + Plantarisin Rekombinan 0.10% dan R3: Ransum Kontrol + Plantarisin Rekombinan 0.15%. Peubah yang diamati ialah konsumsi ransum, bobot badan, pertambahan bobot badan, konversi ransum dan mortalitas ayam broiler. Disimpulkan bahwa penambahan plantarisin sebagai feed additive tidak memberikan pengaruh terhadap konsumsi ransum, bobot badan, pertambahan bobot badan dan konversi ransum. Mortalitas ayam selama penelitian relatif tinggi, yaitu 10% dari populasi ayam yang dipelihara. Kata kunci: antibiotik, broiler, performa, plantarisin ABSTRACT MUHAMMAD JORDY ANDRIAN PAHLEVI. Effectiveness of Plantaricin Addition as Feed Additive in the Diet on Performance of Broiler Chicken. Supervised RITA MUTIA and WIDYA HERMANA. This research aims to evaluate the effectiveness of the use of plantaricin as an alternative to the use of Antibiotic Growth Promotor in feed to the performance of broiler chickens. This study used 280 male New Lohmann (MB 202) broiler chickens with completely randomized design (CRD) consisting of 7 treatments and 4 replications. The treatments were P0: Control (ration without addition of Plantaricin), N1: P0 + Plantaricin Native 0.05%, N2: P0 + Plantaricin Native 0.10%, N3: P0 + Plantaricin Native 0.15%, R1: P0 + Plantaricin Rekombinan 0.05%, R2: P0 + Plantaricin Rekombinan 0.10% and R3: P0 + Plantaricin Rekombinan 0.15%. The variables observed were feed consumption, body weight, body weight gain, feed conversion and broiler mortality. It concluded that the addition of plantaricin as a feed additive did not influence feed consumption, body weight, body weight gain and feed conversion ratio. Chicken mortality during the research was relatively high, ie 10% of the chicken population was maintained.
Keyword: antibiotics, broiler, performance, plantaricin

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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