Judul: Faktor-Faktor yang Mempengaruhi Praktik Manajemen Pemeliharaan Sapi Perah pada Peternak Pemasok Susu Segar Industri Keju di Kabupaten Sukabumi.
Abstrak: This research was aimed to determine the factors that influence the maintenance management practices in farms which supply fresh milk for cheese industry. This research was conducted from June 2011 to January 2012. The respondents were ten fresh milk suppliers. The data was collected by interviewing using questionnaires. The questionnaires contained some question’s about farmer’s characteristic, the maintenance management practices, and farmer’s knowledge about subclinical mastitis and how to control it. The result showed that profile of dairy cattle farmers which most age were between 30 until 50 years old, had educated from elementary school and junior high school, and had farming experience from 1-5 years and >10 years. Half of them had attending the extention program. All of dairy cattle (100%) showed positive reaction of subclinical mastitis with IPB-1 mastitis test. The result of observation showed that respondents with good maintenance management practice were 10%, while respondents with enough and poor maintenance management practices respectively by 30%, and 60%. The significant positive correlation with maintenance management practice (p<0.05) was found between farming experience, and attending the extention program.
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Judul: Hubungan antara Produksi dan Kualitas Susu Sapi Perah dengan Faktor yang Mempengaruhi (Studi Kasus di Pondok Ranggon, Jakarta Timur)
Abstrak: Dairy cows are the large ruminants that mostly kept by Indonesian dairy farmers. The dairy farms of Indonesia located not only in the villages, but also in the urban areas, such as Pondok Ranggon in East Jakarta. Recent study was done to observe effect of technical factors on milk production and quality of dairy farms in Pondok Ranggon in East Jakarta. The parameters were environmental conditions, feeding patterns, animal conditions, lactation performance, and milk quality. The data were analyzed using multiple regression analysis. To overcome less of roughage supply, farmers used agro-industry by products such as tofu waste, soybean waste, and rice bran. The averages of roughage, concentrate, tofu waste, soybean waste and rice bran that offered to the animals were 20,85±4,27; 0,67±0,73; 28,94±7,62; 2,26±4,51; and 0,01±0,09 kg/h/d, respectively. Under this feeding regime, the average milk produced was 9,28±3,22 kg/h/d. The averages of fat, lactose, protein, solid non fat, density of milk quality were 4,44%; 4,20%; 3,91%; 8,83%; and 1,032 g/ml. The relationship of milk production(Y) on roughage (X1), concentrate (X2), tofu waste (X3), soybean waste (X4) and rice bran (X5) was Y1=2,672X10,256 X20,014 X30,018 X4-0,008 X5-0,055. The influenced of age, number of lactation, lactation days, pregnancy and body weight on milk production and quality were also confirmed. It was concluded that maximum milk production in Pondok Ranggon was produced by the cows at 2,5 years age, in the first lactation, at the second months of lactation, from heavier cows, or in the non pregnant cows.
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Judul: Formulasi Hamiltonian untuk Menggambarkan Gerak Gelombang Soliter Dimensi Tiga di Permukaan Laut
Abstrak: Gelombang permukaan adalah gelombang yang terjadi perbedaan rapat massa antara air dan udara. Salah satu gelombang permukaan yang ditinjau adalah gelombang soliter. Formulasi gelombang soliter dilakukan dengan menggunakan formulasi Hamiltonian.
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