Judul: Effect of Niacinamide Supplementation on Hematology Profile and Feed Consumption of Madura Cattle
Abstrak: Transportasi merupakan salah satu tahapan penting dalam bisnis peternakan. Penelitian ini bertujuan untuk menguji dampak suplementasi niacinamide terhadap konsumsi pakan, hematologi, dan glukosa darah pada fase pemulihan sapi Madura pasca transportasi jarak jauh selama 18 jam. Penelitian ini menggunakan 14 ekor sapi Madura pejantan dengan bobot badan (224,64±13,1 kg), yang dibagi menjadi dua kelompok perlakuan dengan masing-masing 7 ulangan (n=7). Perlakuan terdiri dari P0 = kontrol, dan P1 = niacinamide 1000 mg ekor-1 hari-1. Sapi diobservasi selama 28 hari pasca-transportasi. Parameter yang diukur, yaitu konsumsi pakan, profil hematologi darah, dan kadar glukosa darah. Data dianalisis menggunakan repeated measures analysis of variance (ANOVA) dan analisis t-test. Hasil penelitian menunjukkan bahwa suplementasi niacinamide sebesar 1000 mg ekor-1 hari-1 pada sapi Madura menurunkan monosit pada minggu pertama, dan memperbaiki hematokrit pada minggu kedua. Konsumsi BK, glukosa darah, dan profil hematologi darah pasca-transportasi kecuali jumlah limfosit dan basofil mengalami perbaikan selama masa pemeliharaan. Disimpulkan bahwa suplementasi 1000 mg ekor-1 hari-1 niacinamide berpengaruh terhadap profil darah, namun, tidak terhadap konsumsi sapi Madura pasca transportasi., The objective of this study was to investigate the effects of niacinamide on the recovery rate of Madura beef cattle after long distance transportation. Fourteen Madura bulls (BW 224.64 ± 13.1 kg) were equally divided into two treatments, i.e., control and niacinamide supplementation. The cattle were transported on the same truck for 18 hours and were observed for 28 days after transportation. After transportation, cattle were fed either control or 1000 mg head-1 day-1 niacinamide supplemented diet. The parameters observed were feed intake, blood glucose level, and hematology profile. Repeated measures ANOVA and t-test was used to analyze the data. Niacinamide supplementation of 1000 mg head-1day -1 did not affect feed intake, hematology profile, and blood glucose level except PCV and monocyte count. Time affects feed intake, blood glucose, and hematology profile except for lymphocytes and basophyle count. In conclusion, 1000 mg head-1 day-1 niacinamide supplementation affects blood profile but not feed intake.
Keyword: glukosa darah, konsumsi pakan, niacinamide, profil darah, pemulihan pasca transportasi, sapi madura, blood glucose, blood profile, feed intake, madura cattle, post-transport recovery

Judul: Profil Darah, Respon Fisiologis, dan Performa Domba Lokal Pascatransportasi Dengan Suplementasi Asam Amino dan Gula
Abstrak: Transportasi dapat menyebabkan stres yang berdampak terhadap penyusutan bobot badan dan perubahan kondisi fisilogis domba. Penelitian ini bertujuan untuk mengkaji perubahan profil darah, respon fisiologis dan performa domba lokal pascatransportasi darat yang diberi penambahan asam amino dan gula. Percobaan ini dilaksanakan di Blok B, Laboratorium Lapangan Fakultas Peternakan, IPB. Penelitian berlangsung pada bulan September 2021 menggunakan domba lokal jantan dengan kisaran bobot 20,91 ± 2,73 kg. Perlakuan berupa pemberian asam amino 12 g ekor-1 dan gula sebanyak 25 g ekor-1 perhari dengan cara dicampurkan dalam ransum. Model perlakuan yaitu P0 = Kontrol (tanpa penambahan asam amino dan gula), P1 = dengan penambahan asam amino dan gula, masing-masing mendapat empat ulangan. Perlakuan ini diterapkan selama pemeliharaan 15 hari sebelum pengangkutan dan masa recovery hingga mencapai bobot semula. Transportasi dilakukan selama ± 8 jam pada siang hari, dengan luasan dek selama transportasi sebesar 0,1 m2 ekor-1. Data dianalisis menggunakan uji T antara kontrol dan perlakuan. Hasil penelitian menunjukkan bahwa pemberian asam amino dan gula tidak mempengaruhi variable yang diamati (P>0,05).
Keyword: amino acids, sheep, sugar, transportation

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.
Keyword: