Judul: The Evaluation of Feeding Wafer Supplements containing Prill fat on Milk Production and Quality of Dairy Goats
Abstrak: Penelitian ini bertujuan mengevaluasi pengaruh pemberian wafer suplemen mengandung prill fat terhadap komsumsi bahan kering, produksi susu, persistensi produksi susu, kualitas susu, dan Income Over Feed Cost (IOFC) kambing perah. Penelitian ini menggunakan 12 ekor kambing perah laktasi dengan rataan bobot badan 52,08 ± 2,31 kg di peternakan Berkah Farm Sukabumi. Penelitian ini menggunakan rancangan acak kelompok (RAK) yang terdiri atas 4 perlakuan dan 3 kelompok kambing. P0 = silase hijauan dan konsentrat (kontrol), P1 = P0 + wafer suplemen 100 gram, P2 = P0 + wafer suplemen 150 gram, P3 = P0 + wafer suplemen 200 gram. Peubah yang diukur meliputi konsumsi bahan kering, produksi susu, persistensi produksi susu, kualitas susu, dan Income Over Feed Cost (IOFC). Analisis data menggunakan ANOVA dan apabila hasil berbeda nyata dilanjutkan menggunakan uji duncan. Hasil penelitian menunjukkan bahwa pemberian wafer suplemen sangat berpengaruh nyata (P<0,01) terhadap kadar lemak susu kambing perah. Produksi susu pada penelitian ini mengalami peningkatan secara numerik setelah pemberian wafer suplemen. Persistensi produksi susu mengalami peningkatan tertinggi pada perlakuan P2 (150 gram) sebesar 25,73% dan mampu meningkatkan Income Over Feed Cost (IOFC) sebesar 14% ekor-1 hari-1
Keyword: dairy goats, IOFC, milk quality, milk production, prill fat

Judul: Feeding Test of Prill Fat Wafer Supplements on Milk Production and Quality in Small-Holder Farms Kabupaten Boyolali
Abstrak: Penelitian bertujuan menguji pemberian wafer suplemen mengandung prill fat terhadap produksi susu, kualitas susu (lemak, Solid Non Fat (SNF), berat jenis, latosa, protein), persistensi produksi susu, dan perhitungan Income Over Feed Cost (IOFC). Penelitian ini menggunakan 18 ekor sapi perah dengan rata-rata bobot badan 435,76 ± 43,66 kg, produksi susu 10,25 ± 3,31 L/ekor/hari, periode laktasi 2, dan bulan laktasi 6 bulan. Penelitian terdiri dari 2 perlakuan dan 9 ulangan, yaitu P0 = ransum kontrol dan P1 = P0 + 400 gram wafer suplemen prill fat. Data yang diperoleh dianalisis menggunakan uji T-student. Hasil penelitian menunjukkan bahwa pemberian 400 gram wafer suplemen prill fat berpengaruh nyata (P<0,05) terhadap produksi susu, persistensi produksi susu, dan komponen lemak susu. Persistensi produksi susu sebesar 122,49%. Pemberian 400 gram wafer suplemen prill fat tidak berpengaruh nyata (P>0,05) terhadap SNF, berat jenis, protein, dan laktosa susu. Nilai IOFC yang dihasilkan yaitu Rp21.329. Pemberian 400 gram wafer suplemen prill fat mampu meningkatkan produksi, persistensi, komponen lemak susu dan IOFC., This study aimed to evaluate the effect of prill fat wafer supplements on milk yield, milk components (fat, Solid Non Fat (SNF), density, lactose, protein), milk yield persistency and Income Over Feed Cost (IOFC). This study involved 18 dairy cows with an average body weight of 435.76 ± 43.66 kg, milk yield rate of 10.25 ± 3.31 L/cow/day, lactation periods of 2, and lactation months of 6 months. This study consisted of 2 treatments and 9 replications, P0 = control ration and P1 = P0 + 400 gram prill fat wafer supplement. The data obtained were analyzed using T-test. The results of the study showed that the addition of 400 grams of prill fat wafer supplements significantly affected (P<0.05) milk yield and milk fat. Milk yield persistence was 122.49%. It did not significantly affect (P>0.05) SNF, density, protein, and lactose in milk. The IOFC value was Rp21.329. The effects of 400 grams prill fat wafer supplements was able to increase milk yield, persistence, milk fat, and IOFC.
Keyword: dairy cows, milk yield, milk components, prill fat, wafer supplement

Judul: Pengembangan Sistem Rotasi Peta pada Perangkat Mobile tanpa Sensor Magnetometer
Abstrak: Due to the improvement of technology, the function of mobile phone has changed a lot. Nowadays, mobile phone is used not only for communication, but also to support the user’s activity. Many mobile phones now have Operating System (OS) and sensors like GPS and magnetometer. GPS is a sensor that can be used to identify any location, including the location of the user, while magnetometer can be used to identify direction. With data that come from GPS and magnetometer, we can build a navigation application that can rotate its map according to the rotation of the user. Meanwhile, in the Android Compability Definition Document point 1.6 until 2.2, Google have requirements for mobile phones to have GPS and magnetometer sensors if they want to use Android OS. But, since the release of 2.3.3 OS, Google has changed its requirements, allowing any mobile phones to have Android OS without having the magnetometer sensor. The objective of this research is to build an navigation application that can rotate without using magnetometer sensor. The value of the rotation degree is taken from last two position. To stabilize the value, Exponential Smoothing is used in filtering process. This system also use Haversine method to recognize whether the user is walking or driving/riding.
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