Judul: Pengaruh Jenis Kemasan dan Lama Penyimpanan terhadap Serangan Serangga dan Sifat Fisik Ransum Broiler Starter Berbentuk Crumble
Abstrak: Storage of feedstuff is required because development of farm must be made balance with availability of adequate feedstuff. Storage will influence physical properties of feedstuff. Packaging is the one of methods to take care product. Damage by environment can be controlled by packaging. This study was arranged in a Completely Randomize Design with factorial design (4x5) with four replications. The first factor was packaging type (guny sack, plastic sack, paper packaging, and plastic packaging). The second factor was storage (0, 2, 4, 6, 8 weeks). The parameters observed were: moisture content, water activity, particle size, specific density, bulk density, compacted bulk density, angle of repose and insect attack. Data were analyzed using analysis of variance (ANOVA) and differences between treatments were determined with Duncan test. The results showed that packaging type highly significantly affected (p<0.01) the moisture content, water activity, and compacted bulk density. Storage highly significantly affected (p<0.01) the moisture content, water activity, particle size, specific density, bulk density, compacted bulk density, and angle of repose. Insect attack was increase on guny sack, especially at four weeks of storage. Paper packaging and plastic packaging can take care feedstuff from insect attack until eight weeks, but plastic sack until four weeks, and guny sack until two weeks. Guny sack, plastic sack, paper packaging, and plastic packaging can take care physical properties of feedstuff until eight weeks. Keywords: feedstuff, packaging, physical properties, storage
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Judul: Pengaruh Lama Penyimpanan Ransum Komersial Ayam Broiler Starter Bentuk Crumble Terhadap Beberapa Sifat Fisik dan Kandungan Protein Kasar
Abstrak: Semakin besar suatu usaha petemakan, akan menyebabkan bertambahnya pula kebutuhan temak akan ransum yang memiliki kualitas dan nilai nutrisi yang baik, seliingga kebutuhan hidup pokok temak akan terpznuhi serta ciapat mencapai produksi yang diharapkan. Perkembangan usaha petemaka~p erlu diimbangi dengan ketersediaan ransum v.a nz memadai dan selalu s i a ~un tuk di-eu nakan sewsktu-waktu. Oleh sebab itu peutingnya penyimpanan sangat berkaitan dengan ketersediaan ransum. Penyimpanan merupakan suatu kegiatan untuk menahan maupun menunda penggunaan suatu bahan tanpi merubah bentik, kualitas dan nilai nutrGi dari baha~ie~r sebut, sampai saatnya digunakan. Penelitian ini bertujuan untuk mengetahui sifat fisik dan kandungan protein kasar ransum komersial ayam broiler starter bentuk crumble yang disimpan selama 12 minggu. Penelitian ini dilakukan pada bulan Juni hingga Agustus 2001, di Laboratorium Ilmu dan Teknologi Pakan, Jurusan Ilmu Nutrisi dan Makanan Temak, Fakultas Petemakan, Institut Pertanian Bogor. Materi yang digunakan adalah ransum komersial ayam broiler starter yang berbentuk crumble. Peubah yang diukur adalah berat jenis, kerapatan tumpukan, kerapatan pemadatan tumpukan, sudut tumpukan, kandungan protein kasar dan ketahanan benturan. Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan 3 ulangan dan terdiri dari 4 perlakuan, yaitu periode pengamatan (0, 4, 8, 12 n~inggu).D ata yang diperoleh dianalisis dengan analisa sidik ragam (ANOVA) dan apabila berbeda nyata dilanjutkan dengan uji jarak Duncan.
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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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