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: Production of Colostrum and Colostrum Milk and Their Quality in Third Lactation FH Cows that Fed Depolarizing Katuk Supplementary Feed
Abstrak: Kolostrum adalah cairan limfa yang banyak mengandung imunoglobulin. Anak sapi yang baru dilahirkan sangat membutuhkan kolostrum. Daun katuk dipercaya dapat meningkatkan produksi susu. Penambahan katuk depolarisasi pada ransum sapi FH diharapkan dapat meningkatkan produksi kolostrum dan susu kolostrum dengan kualitas yang baik. Penelitian ini bertujuan mengetahui pengaruh pemberian pakan tambahan berupa katuk depolarisasi terhadap produksi dan kualitas kolostrum serta susu kolostrum pada sapi perah FH periode laktasi ketiga. Hewan yang digunakan dalam penelitian ini adalah sapi FH yang baru melahirkan sebanyak 3 ekor, yang akan dibagi pada 3 perlakuan dengan masing-masing perlakuan sebanyak satu ekor, yaitu kontrol (menggunakan pakan dari PT GGL), BKD (pakan GGL yang ditambahkan bubuk katuk depolarisasi), PKD (pakan GGL yang ditambahkan pellet katuk depolarisasi). Katuk depolarisasi diberikan sebanyak 100 g/ekor/hari. Hasil pengamatan disajikan deskriptif. Peubah yang diamati adalah konsumsi pakan sebelum dan setelah beranak, produksi dan kualitas kolostrum serta susu kolostrum. Hasil penelitian menunjukkan bahwa pemberian katuk depolarisasi tidak dapat meningkatkan konsumsi pakan, produksi kolostrum maupun susu kolostrum, dan kualitas susu kolostrum sapi Friesian Holstein laktasi ketiga. Peningkatan kualitas terlihat pada kolostrum sapi FH yang diberikan katuk depolarisasi berbentuk bubuk dan pellet., Colostrum is a lymph fluid that contains a lot of immunoglobulins. Newborn calves need colostrum. Katuk leaves are believed to increase milk production. The addition of depolarizing valves to the ration of FH cows is expected to increase the production of colostrum and colostrum milk with good quality. This study aims to determine the effect of supplementary feeding in t he form of depolarizing catuks on the production and quality of colostrum and colostrum milk in FH dairy cows during the third lactation period. The animals used in this study were FH cows that had just given birth as many as 3 heads, 2 which would be divided into 3 treatments with one treatment each, namely control (using feed from PT GGL), BKD (GGL feed added with depolarizing katuk powder), PKD (GGL feed added with depolarizing valve pellets). The depolarizing valve was given as much as 100 g/head/day. The results of the observations are presented descriptively. The observed variables were feed consumption before and after giving birth, production and quality of colostrum and colostrum milk. The results showed that giving a depolarizing catuk could not increase feed consumption, production of colostrum and colostrum milk, and the quality of colostrum milk of third lactation Friesian Holstein cows. The quality improvement was seen in FH cow colostrum which was given depolarizing catuk in powder and pellet form.
Keyword: colostrum, colostrum milk, depolarizing katuk, friesian holstein

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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