Judul: Body Weight of The Third Lactaction FH Cows Given Depolarizing Katuk Leaves Before Calving until One Month After Calving
Abstrak: Penelitian ini bertujuan untuk mengetahui pengaruh pemberian pakan tambahan daun katuk depolarisasi pada bobot badan sapi FH sebelum beranak, saat beranak, sampai satu bulan setelah beranak. Penelitian ini menggunakan 9 ekor sapi FH laktasi ketiga yang dibagi menjadi 3 kelompok perlakuan, yaitu kelompok P0K (Pakan komplit), P1BKD (pakan komplit yang ditambahkan Bubuk Katuk Depolarisasi), P2PKD (pakan komplit yang ditambahkan Pellet Katuk Depolarisasi). Pakan katuk depolarisasi diberikan 100 g per ekor per hari sebagai feed additif, yang diberikan pada pagi hari dengan dicampur pada pakan pagi hari. Variabel yang diamati adalah pemberian pakan, konsumsi pakan, pertambahan bobot badan harian, dan bobot badan. Data dianalisis menggunakan uji T. Hasil yang diperoleh menunjukan perlakuan tidak berbeda nyata (P>0,05) terhadap konsumsi pakan, pertambahan bobot badan harian, dan bobot badan pada induk sapi FH. Pemberian daun katuk depolarisasi dapat digunakan sebagai pakan tambahan untuk mengurangi penurunan bobot badan pada sapi FH laktasi., This study aimed to determine the effect of addiational feeding of depolarizing katuk leaves on body weight of FH cows before calving, during calving, until one month after calving. This study used 9 FH cows third lactating which were devided into 3 treatment groups, namely the P0K groups (complete feed), P1BKD (complete feed added with Depolarizing Katuk Powder), P2PKD (complete feed added with Depolarizing Katuk Pellet). Depolarizing katuk feeds was given 100 g per head per day as a feed additive. The observed variables was feeding, feed consumption, daily body wight gain, and body weight. T he data were analyzed using the T-test. The result showed that the treatment was not different (P>0,05) on feed comsumption, daily body weight gain, and body weight in FH cows. Giving depolarizing katuk can be used as additional feed to reduce body weight loss in lactating FH cows.
Keyword: body weigt, depolarization katuk leaves, holstein friesian cows

Judul: Produksi dan Kualitas Susu Sapi FH Periode Laktasi Ketiga dengan  Aditif Pakan Katuk Depolarisasi
Abstrak: Penelitian ini bertujuan menganalisis pengaruh suplementasi katuk depolarisasi terhadap produksi dan kualitas susu sapi FH periode laktasi ketiga. Penelitian ini menggunakan 3 ekor sapi FH periode laktasi ketiga pada satu bulan setelah beranak yang berumur 48 bulan yang dipelihara di PT.GGL di Lampung. Perlakuan menggunakan aditif pakan berupa bubuk dan pellet katuk depolarisasi selama 6 minggu (2 minggu sebelum beranak hingga 4 minggu setelah beranak). Data hasil penelitian dianalisis secara deskriptif. Peubah yang diamati terdiri dari konsumsi pakan, produksi dan kualitas susu. Kualitas susu meliputi berat jenis, kadar lemak, kadar protein, bahan kering (BK), dan bahan kering tanpa lemak (BKTL). Penggunaan katuk depolarisasi sebagai aditif pakan berpotensi meningkatkan produksi susu. Katuk depolarisasi menghasilkan susu dengan kadar protein, BK, BKTL yang relatif lebih tinggi, dan kadar lemak yang relatif lebih rendah dibandingkan kontrol., This study was conducted to determine the effect of supplementation depolarization katuk on production and milk quality of FH dairy cow in third lactation periods. FH dairy cow was used in study including three FH dairy cow on third lactation periods of one month after calving birth at the age of 48 months were kept in PT. GGL in Lampung. The feeding treatments was used feed additive of powder and pellet of depolarization katuk for 6 weeks (2 weeks before it calved and 4 weeks after it calved). The data are being analyzed with description. Variable measured including milk production and its quality. Milk quality included milk density, fat, protein, total solid (TS), and solid non-fat (SNF). Using depolarization katuk as feed additive potentially increase milk production. Depolarization katuk produced milk with protein, TS, SNF relatively higher, and fat relatively lower than control.
Keyword: depolarization katuk, feed additive, FH dairy cow, milk production, milk  quality

Judul: Penentuan Nilai Eigen dan Vektor Eigen dari Matriks Tridiagonal 2-Toeplitz dengan Pendekatan Polinomial Chebyshev
Abstrak: The eigenvalues and eigenvectors of a matrix can be determined by finding its characteristic polynomials. The characteristic polynomials of a tridiagonal 2-Toeplitz matrix is shown to be closely connected to polynomials which satisfy the Chebyshev recurrence relationship. If the order of the matrix is odd, then the eigenvalues are found explicitly in terms of the Chebyshev zeros and the eigenvectors are found in terms of the polynomials satisfying the recurrence relationship. For even ordered matrices, the situation is more complicated. The problem in these cases is that although the Chebyshev recurrence formula is still applied, its initial values are not generating Chebyshev polynomials
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