Judul: Efisiensi ekonomis usahatani peternakan sapi perah rakyat di Kelurahan Kebon Pedes, Kotamadya Bogor
Abstrak: Serangkaian penelitian ke lapangan untuk pengambilan data, telah dilakukan selama kurang lebih satu bulan, terhitung mulai awal Juli sampai awal Agustus 1984. Data yang diambil mengenai usahatani peternakan sapi perah rakyat di Kelurahan Kebon Pedes, Kotamadya Bogor. Informasi mengenai keadaan efisiensi usaha dan skala usaha/hasil adalah penting untuk pengambilan keputusan dan perumusan kebijaksanaan. Laporan ini bertujuan untuk menyajikan keadaan efisiensi usaha dan skala hasil/usaha peternakan sapi perah rakyat di daerah Kebon Pedes, Kotamadya Bogor, dengan menggunakan konsep ekonometrika sebagai alat analisa. Alternatif kombinasi optimal dari penggunaan faktor-faktor produksi untuk memperoleh keuntungan maksimum dikemukakan pula dalam laporan ini. Pemilihan model (model selection) dilakukan dalam penelitian ini. Model terpilih yang digunakan dalam penelitian ini adalah model fungsi produksi Cobb-Douglas (C-D), dengan menggunakan tiga peubah bebas dan satu peubah boneka. Selanjutnya untuk pengolahan data digunakan metoda persamaan kuadrat terkecil (ordinary least square), dengan terlebih dahulu menarik logaritma asli dari model asal.
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Judul: Analisis efisiensi produksi dan peran koperasi terhadap usaha ternak Sapi Perah di Kecamatan Cibungbulang Kabupaten Bogor
Abstrak: Indonesia has a potency to develops the dairy industry in the future, however Indonesia still imports about 73% of its dairy need and produces the 27% remaining domestically (Kementerian Pertanian, 2013). Kawasan Usaha Ternak (KUNAK) Cibungbulang, Bogor District is purposively established by the Koperasi Peternak Susu (KPS) Bogor as a national pilot area of an environmentally friendly dairy farm. Further, it is also expected that its milk production can support national milk supply. However, as the milk production in KUNAK Cibungbulang still highly depends on the input usage, therefore the influencing factors of milk production analyses are interesting to be examined. Moreover, this study also analyses the farmer’s income level, the optimum input usage, and also the dairy cooperative’s role in supporting the farmer’s activity. This study applies the double linear regression which has been transformed into the natural logarithm form, the farm management income analysis, the efficiency analysis of production factor, and the descriptive analysis. The result of the study indicates that the significant production factors which influence the milk production are: the amount of the feed, concentrate, tofu dregs, and workers. The analysis is resulting an evidence of profitable dairy farm. However, it is also important to increase the usage of optimum input and the cooperative roles, thus the KUNAK Cibungbulang can reach its optimum profit. The research found that inputs farm have not been used optimally, even the dairy cooperatives have supported the farms well.
Keyword: Bogor Agricultural University (IPB), optimum input, production factor, milk production, cooperative

Judul: Komponen Kimia Fraksi Polar Ekstrak Metanol Buah Sinyo Nakal (Duranta repens)
Abstrak: Various studies have been conducted to identify the bioactive components in leaves and bark of sinyo nakal (D. repens), but only few studies focusing on fruit extract. Phytochemical investigations on lipid-free fruit methanol extract showed the presence of flavonoid, alkaloid, saponin, tanin, and steroid. Fractionations of the methanol extract have been conducted through series of chromatographic separations including vacuum liquid chromatography, gravity column chromatography, and radial chromatography. Two fractions namely Hfg1 and Hi were analyzed with nuclear magnetic resonance (NMR) spectrophotometer. The 1H, 13C, and 2D correlation NMR analysis showed that Hfg1 fraction was trans-cinnamic acid, whereas the molecular structure in Hi fraction has not been elucidated yet because it still contained mixture of compounds.
Keyword: trans-cinnamic acid, Duranta repens, fractionation, sinyo nakal