Judul: Performance of friesian holstein dairy cattle fed silages in pangalengan farm
Abstrak: Silase merupakan salah satu teknik pengawetan hijauan pada kadar air tertentu melalui proses fermentasi mikrobial oleh bakteri asam laktat yang berlangsung secara anaerob. Meskipun teknologi ini sudah dikenal lama di Indonesia, namun penerapannya pada peternakan rakyat masih terbatas. Penelitian ini bertujuan menganalisis dampak penggunaan silase dalam ransum sapi perah di peternakan rakyat anggota KPBS terhadap performa sapi perah Friesian Holstein dan membandingkannya dengan yang tidak diberi silase. Penelitian ini melibatkan 10 peternak dan 36 ekor sapi perah FH. Metode yang dilakukan dalam penelitian, yaitu wawancara, pengukuran pemberian pakan, kecernaan, fermentabilitas, bobot badan (BB), body condition score (BCS), produksi dan kualitas susu. Hasil penelitian menunjukkan bahwa tidak terdapat perbedaan jumlah bahan kering (BK) ransum yang dikonsumsi antara kedua perlakuan, namun pada ransum yang diberi silase, proporsi konsentrat lebih tinggi 49% dibandingkan yang tanpa menggunakan silase 38%. Fermentabilitas protein ransum yang diberi silase lebih rendah, namun fermentabilitas bahan organiknya lebih tinggi. Pemberian silase meningkatkan kualitas susu yang dihasilkan meskipun belum signifikan menunjukkan peningkatan pada BB, BCS dan produksi susu., Silage is a forage preservation techniques at certain moisture content through lactic acid bacteria fermentation in anaerobic condition. Although this technology has been known for a long time in Indonesia, but its application at traditional farmes is still limited. This study aims to analyze the impact of the use of silage in the ration of dairy cows in farm people KPBS members on the performance of Holstein Friesian dairy cattle and compared with those not given silage. The study involved 10 farmers and 36 heads FH cows. The study used interview, measuring feed and nutrient consumption, digestibility, fermentability, and body weight (BW), body condition score (BCS), milk production and milk quality. The results showed that there was no difference in the amount of dry matter (DM) intake between the two treatments, but the silage treatment fed, concentrate a higher proportion (of 49%) compared to that without silages (38%). Protein fermentability of silage contens ration was lower, but its organic fermentability was higher. The silage treatment improved the quality of milk produced significantly but not BW, BCS and milk production.
Keyword: fermentabilitas, kecernaan, silase

Judul: Penggunaan pakan hijauan lengkap (PHL) fermentasi pada sapi perah fase laktasi di peternakan sapi perah Kampung Cibedug, Lembang
Abstrak: Tujuan penelitian ini untuk mengevaluasi pemberian pakan hijauan lengkap (PHL) fermentasi terhadap konsumsi pakan, kecernaan bahan kering dan kecernaan bahan organik in vivo dari pakan hijauan lengkap (PHL), produksi susu, kualitas susu, serta efisiensi ransum. Penelitian menggunakan sapi perah FH fase laktasi sebanyak 15 ekor untuk pengukuran produksi susu, dan 10 ekor sapi perah FH untuk pengukuran kualitas susu yang dikelompokkan menjadi 2 kelompok dengan perbedaan jenis pakan yang diberikan. Metode pengambilan sampel yang digunakan ialah purposive sampling dengan tujuan sapi yang digunakan dari peternakan yang sudah ditentukan. Data dianalisis dengan uji-t untuk melihat perbedaan produksi susu dan kualitas susu yang berasal dari sapi kontrol (P1) dan perlakuan pakan hijauan lengkap fermentasi (P2). Hasil penelitian ini menunjukkan bahwa pemberian pakan P1 dan P2 tidak berbeda signifikan (P>0,05) terhadap konsumsi pakan, produksi susu, dan kualitas susu.Nilai kecernaan bahan kering dan kecernaan bahan organik in vivo sudah mencapai standar. Kedua perlakuan juga menghasilkan nilai ekonomi yang tidak berbeda signifkan (P>0,05) dan nilai efisiensi teknis yang berbeda signfikan (P<0,05), The aim of this study was to evaluate the use of fermented complete feed on feed consumption, and calculation of dry matter and organic matter digestibility in vivo, milk production, milk quality and ration efficiency. This research used 15 FH dairy cows in the lactation phase for measuring milk production and 10 FH dairy cows for measuring milk quality, which were grouped into 2 groups with different types of feed given. This research uses a purposive sampling methode. Data were analyzed using a t-test to observe differences in milk production and quality between the control group (P1) and the fermented complete feed (P2). The results showed that the provision of P1 and P2 feeds did not significantly differ (P>0,05) in terms of feed consumption, milk production, and milk quality. The provision of fermented complete feed did not affect consumption, production, and milk quality. The values for in vivo dry matter digestibility and organic matter digestibility met the standards. Both treatments also resulted in economic values that were not significantly different (P>0,05) and technical efficiency values that were significantly different (P<0,05)
Keyword: Kualitas Susu, Produksi Susu, kcbk, kcbo, pakan hijauan lengkap

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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