Judul: Estrus Characteristics and Follicle Number of  Boerja Goats with Rations Containing High PUFA and Antioxidants
Abstrak: Penelitian ini bertujuan untuk menganalisis pengaruh pemberian ransum tinggi PUFA dengan penambahan antioksidan asal ekstrak daun nangka terhadap karakteristik estrus dan jumlah folikel kambing Boerja. Penelitian ini menggunakan 10 ekor kambing Boerja betina umur 9-10 bulan yang dibagi menjadi 2 perlakuan dengan 5 ulangan. Perlakuan terdiri dari A0 = Ransum tinggi PUFA; A1 = Ransum tinggi PUFA + antioksidan. Peubah yang diamati yaitu konsumsi zat makanan, body condition score, karakteristik estrus, karakteristik vulva, serta jumlah folikel preovulasi. Data yang diperoleh dianalisis dengan t-test independent sample menggunakan program IBM SPSS Statistic 25. Hasil penelitian menunjukkan bahwa perlakuan tidak berpengaruh nyata (P>0,05) terhadap konsumsi zat makanan, body condition score, karakteristik vulva serta total folikel preovulasi. Perlakuan yang berpengaruh nyata (P<0,05) ditunjukkan terhadap onset estrus, durasi estrus, serta jumlah folikel besar preovulasi. Simpulan dari penelitian ini adalah penambahan antioksidan dalam ransum tinggi PUFA dapat mempercepat onset estrus dan mempersingkat durasi estrus dalam rentang normal., This study aimed to analyze the effect of giving rations containing high PUFA with the addition of antioxidants from jackfruit leaf extract on the estrus characteristics and follicle number of Boerja goats. This study used ten Boerja goat does aged 9-10 months which were divided into 2 treatments with 5 replications. The treatment consisted of A0 = high PUFA; A1 = high PUFA + antioxidants. The observed variables were feed intake, BCS, estrus characteristics, vulvar characteristics, and number of preovulatory follicles. The data obtained were analyzed by independent sample t-test using the IBM SPSS Statistics 25 program. The results showed that the treatment had no significant effect (P>0.05) on feed intake, body condition score, vulvar characteristics, and total preovulatory follicles. Treatment had a significant effect (P<0.05) on the onset of estrus, duration of estrus, and number of large preovulatory follicles. The conclusion of this study is the addition of antioxidants in high PUFA rations can shorten the onset and duration of estrus within the normal range.
Keyword: antioxidants, Boerja goat, estrus, jackfruit leaf, PUFA

Judul: The Addition of Antioxidants to The Ratiom Contains PUFA Against Nulliparous Hematology and Blood Metabolites in The Folliculogenesis Phase
Abstrak: Penelitian bertujuan untuk mengevaluasi gambaran darah calon induk kambing betina pada fase folikulogenesis dengan pemberian ransum mengandung PUFA dan penambahan antioksidan. Penelitian menggunakan 10 ekor kambing Boerja betina yang dibagi menjadi 2 perlakuan dan 5 kelompok. Perlakuan terdiri dari A0= ransum mengandung PUFA tanpa antioksidan dan A1= ransum mengandung PUFA dengan penambahan antioksidan 200 ppm asal ekstrak daun nangka. Peubah yang diamati pada penelitian yaitu konsumsi bahan kering, protein kasar, lemak kasar, karbohidrat, TDN, hematologi, dan metabolit darah. Data yang diperoleh dianalisis menggunakan software SPSS dengan t-test independent. Simpulan dari penelitian adalah kombinasi pemberian ransum mengandung PUFA dengan penambahan 200 ppm antioksidan asal ekstrak daun nangka menunjukkan hematologi dan metabolit darah yang lebih baik yang dapat dilihat dari meningkatnya kadar PCV, eosinofil, basofil, dan kadar trigliserida dibandingkan kambing Boerja betina yang tidak diberi penambahan antioksidan pada fase folikulogenesis., This study aimed to evaluate the blood picture of nulliparous in the folliculogenesis phase by giving rations containing PUFA and the addition of antioxidant. This study used 10 nulliparous Boerja divided into 2 treatments and 5 replicates. The treatment consisted of A0= ration containing PUFA without antioxidants and A1= ration containing PUFA with the addition of 200 ppm antioxidant from jackfruit leaves extract. The variables observed included dry matter intake, crude protein, crude fat, carbohydrate, TDN, hematology, and blood metabolites. The data obtained were analyzed using SPSS software with an independent t-test. The conclusion of this study is that the combination of PUFA containing rations with the addition of 200 ppm antioxidant from jackfruit leaves extract showed better hematology and blood metabolites which can be seen from increased levels of PCV, eosinophils, basophils, and triglyceride levels compared nulliparous Boerja that were not given the addition of antioxidants in the folliculogenesis phase.
Keyword: antioxidant, blood metabolite, hematology, PUFA, reproduction

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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