Judul: Production and Quality of FH Dairy Cow Milk in Second Lactation Periods Given Depolarizing Katuk Supplementary Feed
Abstrak: Peningkatan produksi susu sapi FH dapat dilakukan dengan meningkatkan kualitas pakan, salah satunya dengan pemberian suplemen pakan. Penelitian bertujuan menganalisis pengaruh tambahan pakan daun katuk depolarisasi terhadap konsumsi pakan, produksi susu, dan kualitas susu pada sapi FH periode laktasi kedua. Penelitian ini menggunakan tiga ekor sapi FH dengan periode laktasi kedua yang dibagi menjadi tiga perlakuan yaitu perlakuan kontrol (P0) diberi pakan komplit GGL, perlakuan satu (P1) diberi pakan komplit GGL yang ditambahkan 100 g/ekor/hari bubuk katuk depolarisasi, dan perlakuan dua (P2) diberi pakan komplit GGL yang ditambahkan 100 g/ekor/hari pelet katuk depolarisasi. Peubah yang diamati adalah Temperature Humidity Index (THI), konsumsi pakan, produksi susu, dan kualitas susu. Hasil penelitian menunjukkan pemberian katuk depolarisasi bentuk bubuk dan memiliki rataan konsumsi pakan yang lebih rendah dibandingkan kontrol, nilai rataan konsumsi BK pakan yang relatif sama. Perlakuan katuk depolarisasi berpotensi meningkatkan produksi susu sapi FH laktasi kedua dengan kualitas susu yang relatif lebih tinggi pada bahan kering susu, bahan kering tanpa lemak dan kadar protein., Increasing milk production of FH cows can be done by improving feed quality, one of which is by providing feed additives. This study aims to determine the effect of additional depolarizing katuk leaf feed on feed consumption, milk production and milk quality in FH cows during the second lactation period. The cows used in this study amounted to three FH cows with the second lactation period which was divided into three treatments, namely control treatment (P0) given GGL complete feed, treatment one (P1) given GGL complete feed added 100 g / head / day depolarizing cotton powder, and treatment two (P2) given GGL complete feed added 100 g / head / day depolarizing katuk pelets. The observed modifiers were THI (Temperature Humidity Index), feed consumption, milk production and milk quality. The results showed that giving depolarizing katuk in powder and pelet forms can increase the consumption of BK feed. Depolarization katuk has to increase milk production of second lactation FH cows with relatively higher milk quality in milk dry matter, lean dry matter and protein content.
Keyword: Fresian Holstein, Katuk Depolarisasi, Kualitas Susu, Produksi Susu

Judul: Production of Colostrum and Colostrum Milk and Their Quality in Third Lactation FH Cows that Fed Depolarizing Katuk Supplementary Feed
Abstrak: Kolostrum adalah cairan limfa yang banyak mengandung imunoglobulin. Anak sapi yang baru dilahirkan sangat membutuhkan kolostrum. Daun katuk dipercaya dapat meningkatkan produksi susu. Penambahan katuk depolarisasi pada ransum sapi FH diharapkan dapat meningkatkan produksi kolostrum dan susu kolostrum dengan kualitas yang baik. Penelitian ini bertujuan mengetahui pengaruh pemberian pakan tambahan berupa katuk depolarisasi terhadap produksi dan kualitas kolostrum serta susu kolostrum pada sapi perah FH periode laktasi ketiga. Hewan yang digunakan dalam penelitian ini adalah sapi FH yang baru melahirkan sebanyak 3 ekor, yang akan dibagi pada 3 perlakuan dengan masing-masing perlakuan sebanyak satu ekor, yaitu kontrol (menggunakan pakan dari PT GGL), BKD (pakan GGL yang ditambahkan bubuk katuk depolarisasi), PKD (pakan GGL yang ditambahkan pellet katuk depolarisasi). Katuk depolarisasi diberikan sebanyak 100 g/ekor/hari. Hasil pengamatan disajikan deskriptif. Peubah yang diamati adalah konsumsi pakan sebelum dan setelah beranak, produksi dan kualitas kolostrum serta susu kolostrum. Hasil penelitian menunjukkan bahwa pemberian katuk depolarisasi tidak dapat meningkatkan konsumsi pakan, produksi kolostrum maupun susu kolostrum, dan kualitas susu kolostrum sapi Friesian Holstein laktasi ketiga. Peningkatan kualitas terlihat pada kolostrum sapi FH yang diberikan katuk depolarisasi berbentuk bubuk dan pellet., Colostrum is a lymph fluid that contains a lot of immunoglobulins. Newborn calves need colostrum. Katuk leaves are believed to increase milk production. The addition of depolarizing valves to the ration of FH cows is expected to increase the production of colostrum and colostrum milk with good quality. This study aims to determine the effect of supplementary feeding in t he form of depolarizing catuks on the production and quality of colostrum and colostrum milk in FH dairy cows during the third lactation period. The animals used in this study were FH cows that had just given birth as many as 3 heads, 2 which would be divided into 3 treatments with one treatment each, namely control (using feed from PT GGL), BKD (GGL feed added with depolarizing katuk powder), PKD (GGL feed added with depolarizing valve pellets). The depolarizing valve was given as much as 100 g/head/day. The results of the observations are presented descriptively. The observed variables were feed consumption before and after giving birth, production and quality of colostrum and colostrum milk. The results showed that giving a depolarizing catuk could not increase feed consumption, production of colostrum and colostrum milk, and the quality of colostrum milk of third lactation Friesian Holstein cows. The quality improvement was seen in FH cow colostrum which was given depolarizing catuk in powder and pellet form.
Keyword: colostrum, colostrum milk, depolarizing katuk, friesian holstein

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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