Judul: Assessment The Implementation of Animal Welfare Aspects at Cakung Slaughterhouse PD. Dharma Jaya
Abstrak: Pemenuhan sumber pangan protein hewani harus diiringi dengan perbaikan sarana dan operasional rumah potong hewan melalui upaya peningkatan kesejahteraan hewan. Penelitian ini bertujuan menilai penerapan kesejahteraan hewan di rumah potong hewan (RPH) Cakung PD. Dharma Jaya, Kelurahan Penggilingan, Kecamatan Cakung, Jakarta Timur, Daerah Khusus Ibukota Jakarta. Penelitian dilakukan dengan metode observasi langsung secara purposive sampling dan data diperoleh dengan menggunakan metode skoring. Variabel yang diamati yaitu segi sarana dan operasional ternak selama penerimaan ternak (unloading), kandang penampungan, sebelum dan saat penyembelihan serta tingkah laku. Hasil penelitian dari jumlah sampel sebanyak 15 ekor ternak dengan bangsa sapi silangan lokal, peranakan ongole (PO), dan brahman cross (BX) menunjukkan nilai penerapan aspek kesejahteraan hewan di rumah potong hewan (RPH) Cakung PD. Dharma Jaya pada variabel penerimaan ternak (unloading) 66,11% (Cukup), kandang penampungan 82,50% (Baik) serta sebelum dan saat penyembelihan 60,00% (Cukup). Penilaian tingkah laku untuk vocalise/bellow 26,67%, slip 26,67%, falling 0%, double hits stunning 13,33%, baulking 0%. Total penilaian sarana dan operasional di rumah potong hewan (RPH) Cakung PD. Dharma Jaya mencapai 69,54% (Baik). Masih terdapat beberapa indikator seperti ketersediaan, keadaan dan pemeliharaan sarana serta pemberlakuan operasional yang belum diterapkan seluruhnya atau belum sesuai dengan aspek kesejahteraan hewan sehingga akumulasi penilaian yang didapat belum maksimal.
Keyword: animal welfare, behavior, slaughterhouse

Judul: Implementation of Animal Welfare During the Slaughter Process at Mitra Tani Farm, Ciampea District, Bogor Regency.
Abstrak: Kesejahteraan hewan harus diperhatikan sejak hewan tersebut lahir hingga dipotong. Penelitian ini bertujuan untuk mengevaluasi penerapan aspek kesejahteraan hewan pada pemotongan ternak di Mitra Tani Farm yang terletak di Kecamatan Ciampea, Kabupaten Bogor. Indikator kesejahteraan hewan yang diamati meliputi lima aspek yaitu, evaluasi bangunan dan sarana perkandangan yang sesuai dengan penerapan Good Farming Practice (GFP), cara penggiringan ternak, tingkah laku ternak, kondisi pra pemotongan ternak, dan respon fisiologi ternak setelah dipotong. Metode yang digunakan adalah penilaian skoring berdasarkan AWIN Welfare Assesment Protocol yang telah dimodifikasi. Jumlah ternak yang diamati sebanyak 39 ekor domba, dengan 30 ekor domba jantan, dan 9 ekor domba betina. Domba yang diamati merupakan domba gibas dan domba priangan berumur 6-24 bulan. Hasil pengamatan terhadap bangunan dan sarana perkandangan, cara penggiringan, tingkah laku yang ditunjukkan, serta kondisi prapemotongan ternak di MT Farm sudah dalam kategori baik, dilihat dari persentase capaian pada kategori tersebut, masing-masing sebesar 82,05%, 74,72%, 54,21%, dan 75,21%. Hasil pengamatan respon fisiologis ternak setelah dipotong dilihat dari hilangnya refleks kelopak mata yang memakan waktu sekitar 86,87±26,32 detik; terhentinya proses pernapasan 113,02±23,35 detik; dan berhentinya aliran darah 127,12±12,02 detik. Penanganan dan keadaan ternak sebelum proses pemotongan sudah mengikuti standar kesejahteraan hewan, selain itu penataan bangunan dan fasilitas kandang sudah sesuai dengan penerapan GFP. Pada proses pemotongan, juru sembelih harus mempunyai standar kompetensi penyembelihan., Animal welfare must be considered from animals are born until slaughtered. This research aimed to evaluate the implementation of animal welfare aspect during slaughter process at Mitra Tani Farm, Ciampea District, Bogor Regency. The animal welfare indicators were observed including five aspects, evaluation of building and facilities should appropiate with the application of Good Farming Practice (GFP), animal handling methods, animal behavior, pre-slaughter conditions, and the physiological response of animal after slaughtered. The method used is a scoring assessment based on the modified AWIN Welfare Protocol. This observation using 39 head of sheep, with 30 rams and 9 ewes. The sheep that were observed were 6-34 month old Gibas sheep and Priangan sheep aged 6-24 months. Based on the assessment results, the indicators that have been considered which consist of evaluation the building and facilities, the animal handling, animal behavior, and pre-slaughter conditions were in a good category based on percentage of the number in each category 82.05%, 74.72%, 54.21%, and 75.21%. During slaughter, physiological response of sheep was observed. The corneal reflex disappeared at an average time of 86.87 ±26.32 s; rhythmic breathing disappeared at an average time of 113.02 ±23.35 s ; and the length of bleeding time 127.12±12.02 s. Handling and condition of animal prior to the slaughter process has followed animal welfare standards, the arrangement of building and facilities is appropiate with the implementation of GFP. The slaughterman must have a standard of slaughter competence.
Keyword: Animal Welfare, Animal Handling, Slaughter Process, Sheep

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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