Judul: Teknik Pengelolaan dan Penilaian Kesejahteraan Murai Batu (Copsychus malabaricus, Scopoli 1788) di Mega Bird and Orchid Farm, Bogor, Jawa Barat
Abstrak: Population of white-rumped shama (Copsychus malabaricus) in their natural habitat tends to decrease due to hunting activity, and forest conversion and degradation. One of efforts to conserve this species is ex-situ conservation by means of birds-keeping. This research aims to analyze management technique and to assess the success of bird-keeping of white-rumped shama at Mega Bird and Orchid Farm (MBOF). This study was conducted from May to July 2014. Types of hutches at MBOF are development, reproduction and incubation buildings. Feedstocks used in this research were powder and crickets. The percentage of reproduction level in 2013 and 2014 were respectively 70% and 23.80% while the hatchability were 66% and 82.35% and mortality were 33.33% and 21.43%. Welfare assessment conducted by breeder is 69.35 while it is based on the research result is 64.25. The conclusion is that management of white-rumped shama by MBOF complies with animal welfare criteria.
Keyword: Bogor Agricultural University (IPB), white-rumped shama, reproduction, mortality, hatchability, animal welfares

Judul: Observation of Qualitative and Quantitative Traits of  White-rumped shama (Copsychus malabaricus sp) Bred in The Captive Breeding in Bogor Regency.
Abstrak: Burung murai batu (Copsychus malabaricus sp) adalah salah satu jenis burung kicauan yang banyak ditangkarkan. Penelitian ini bertujuan mengkaji sifat kualitatif dan kuantitatif beberapa subspesies burung murai batu. Sampel yang digunakan yaitu 12 ekor burung murai batu jantan dan 12 ekor betina berumur 2 tahun yang berasal dari wilayah yang berbeda. Sifat kualitatif yang diamati yaitu warna bulu, bentuk paruh, warna shanks, pola bulu ekor burung murai batu, dan bentuk kepala. Sifat kuantitatif yang diamati yaitu panjang paruh, panjang badan, panjang sayap, panjang bulu ekor, dan panjang tarsus. Analisa data menggunakan metode deskriptif. Hasil penelitian bahwa dari lima subspesies burung murai batu memiliki warna bulu dominan hitam kebiruan pada jantan dan dominan hitam keabu-abuan pada betina serta warna coklat pada bagian dada baik jantan maupun betina. Burung murai batu nias memiliki ekor berwarna hitam sedangkan lainnya memiliki ekor berwarna hitam dan putih dan dengan pola yang berbeda. Sifat kualitatif dan kuantitatif enam subspesies burung murai batu sangat bervariasi., The white-rumped shama (Copsychus malabaricus sp) is a type of songbird commonly bred in captivity. This research aims to study the qualitative and quantitative traits of several subspecies of the White-rumped Shama. The samples used were 12 male and 12 female White-rumped Shamas, aged two years old, originating from different regions. The qualitative traits observed were feather color, beak shape, shank color, tail feather pattern, and head shape. The quantitative traits observed were beak length, total body length, wing length, tail feather length, and tarsus length. Meticulous data analysis was performed using descriptive methods to ensure the accuracy and reliability of the findings. This study showed that of the 5 subspecies of White-rumped Shama, males predominantly had bluish-black feathers, females had predominantly grayish-black feathers, and both sexes had brown feathers on the chest. The Nias White-rumped Shama had black tails, while the others had black and white tails with different patterns. The qualitative and quantitative traits of the 6 subspecies of white-rumped Shama varied greatly.
Keyword: penangkaran, murai batu, sifat kualitatif, sifat kuantitatif, subspesies

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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