Judul: Efek Pemberian Tepung Indigofera (Indigofera sp.) Sebagai Substitusi Konsentrat Komersial terhadap Produksi dan Kualitas Susu Sapi FH
Abstrak: This research aimed to evaluate the use of Indigofera (Indigofera sp.) meal as substitute of commercial concentrate on the quantity and quality of milk of Friesien Holstein cows at Pasirjambu districts. This research used a randomized block design and analysis of Covariance (RBD - ANCOVA), in 3 levels of concentrates and Indigofera meal with 3 replications as a block based on milk production levels. Nine of dairy cows were used and offered treatments randomly. The treatments were R0 (60% forage + 40% concentrate), R1 (60% forage + 32% concentrate + 8% Indigofera meal) dan R2 (60% forage + 24% concentrate + 16% Indigofera meal). The results showed that there was no significant different on protein, fat, SNF, lactose, density, salt and freezing point of milk among treatment. This means Indigofera meal added as substitute of commercial concentrate did not negative affect milk quantity and quality. Thus, indigofera can be used as substitute to commercial concentrate up to 16%.
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Judul: Subsitusi Konsentrat Komersil dengan Tepung Indigofera (Indigofera sp.) untuk Konsumsi Pakan, Kecernaan dan Produksi Susu Sapi Friesian Holstein (FH)
Abstrak: South Bandung district is one of the largest milk-producing areas in West Java. Sub-district Pasirjambu is a part of Bandung Selatan regency that have big potential in dairy cattle breeding. The problem in this area is low production of milk produced by farmers and the high price of the commercial feed concentrates, so it influences market value for milk and welfare farmers. Indigofera sp. mesh in this research was used as commercial concentrates substitution. This research using randomized design group (RAK method – ANOVA) on 3 group based on milk production. Nine Friesian Holstein (FH) cows with random treatment. The treatment P0 (100% concentrates : 0% Indigofera sp.), P1 (80% concentrates : 20% Indigofera sp.), and P2 (60% concentrates : 40% Indigofera sp.). The results showed that substitution of Indigofera sp. mesh can substitute concentrate to 40% as a commercial concentrate substitution does not affect milk feed intake, digestibility and milk production.
Keyword: milk production., Indigofera sp, feed intake, digestibility, commercial concenstrat

Judul: Closed Knight’s Tour pada Papan Catur Berbentuk Persegi Panjang dengan Ukuran Maksimal 8 × 8
Abstrak: Closed Knight’s Tour merupakan langkah kuda yang mengunjungi setiap kotak pada papan catur tepat satu kali dengan langkah kuda berawal dan berakhir pada kotak yang sama. Graf yang terbentuk dari closed knight’s tour dinotasikan sebagai graf G(m,n), dengan m adalah banyaknya baris dan n adalah banyaknya kolom. Graf tersebut memuat Hamiltonian cycle. Sebuah graf terhubung G adalah graf bipartite jika dan hanya jika graf tersebut tidak memiliki cycle dengan panjang ganjil. Papan catur yang memenuhi syarat cukup untuk memiliki closed knight’s tour adalah papan catur berukuran 5 × 6, 5 × 8, 6 × 6, 6 × 7, 6 × 8, 7 × 8, dan 8 × 8.
Keyword: bipartite, closed knight’s tour, hamiltonian cycle, knight’s tour, teori graf