Judul: Evaluation of the Dietary Cation-Anion Difference Profile of Pre-partum and Post-partum Cows Over the Cow's Performances in Koperasi Peternakan Bandung Selatan Pangalengan
Abstrak: Hipokalsemia merupakan salah satu gangguan metabolik yang umum terjadi pada sapi perah fase post-partum. Gangguan ini dapat dicegah dengan mengatur kandungan dietary cation-anion difference atau DCAD pada pakan. Dietary cation-anion difference perlu diperhatikan dari fase pre-partum sapi perah. Penelitian ini bertujuan untuk mengamati status DCAD pada masing-masing 15 sapi pre-partum dan post-partum di KPBS Pangalengan. Hasil penelitian menunjukkan DCAD sapi pre-partum bernilai -205,8±238,5 mEq/kg BK dan post-partum bernilai -164,34±175,38 mEq/kg BK. Sebanyak 86,67% sapi fase pre-partum sudah sesuai dengan kebutuhan DCAD bernilai negatif sedangkan hanya 18,75% sapi post-partum yang sudah sesuai dengan kebutuhan DCAD bernilai positif. Hasil uji korelasi menunjukkan adanya korelasi lemah antara DCAD dengan performa ternak berupa pH urin, gangguan metabolik, produksi susu, dan kualitas susu. Berdasarkan hal tersebut dapat disimpulkan bahwa manajemen DCAD sapi post-partum belum sesuai sehingga diperlukan penyesuaian terhadap pakan ternak dengan suplementasi atau reformulasi ransum., Hypocalcemia is one of the metabolic disorders that commonly occurs in dairy cows during the post-partum phase. This disorder can be prevented by regulating the dietary cation-anion difference profile in their diet. The dietary cation-anion difference profile needs to be managed from the pre-partum phase. This research aims to observe the DCAD profile in both 15 pre-partum and post-partum cows at KPBS Pangalengan. The research found that DCAD in pre-partum cows had a value of -205.8±238.5 mEq/kg DM and for the post-partum cows ware -164.34±175.38 mEq/kg DM. As many 86.67% of pre-partum cows had the appropriate negative DCAD values, while only 18.75% of post-partum cows has the appropriate positive DCAD values. Correlation tests showed a weak correlation between DCAD and the cow’s performances such as urine pH, metabolic disorder, milk production, and milk quality. Based on these, it can be concluded that DCAD management of the post-partum cows are not optimal, necessitating adjustments in cow’s feed through supplementation or diet reformulation.
Keyword: DCAD, hipokalsemia, performa ternak, post-partum, pre-partum, cow's performance, hypocalcemia

Judul: Analysis of Mineral Content in Dairy Cattle Feed in Smallholder Farms as a Basis for DCAD Calculation and NIRS Database Development
Abstrak: Penelitian ini bertujuan untuk mengembangkan database mineral dan Dietary Cation Anion Difference (DCAD) pakan lokal sapi perah dengan pendeteksi secara cepat menggunakan NIRS untuk mengatasi permasalahan hipokalsemia. Sampel hijauan dan konsentrat sebanyak 232 sampel dari wilayah Jawa Barat dikumpulkan dan dianalisis untuk mengetahui kandungan mineral Na, K, Ca, dan Mg dengan AAS, mineral P dan S dengan spektrofotometer, dan Cl dengan titrasi. Data kandungan mineral pakan digunakan untuk menghitung nilai DCAD. Hasil penelitian menunjukkan terdapat variasi kandungan mineral yang menghasilkan nilai DCAD yang berbeda-beda. Secara umum, keseluruhan peubah memiliki nilai R2>0,5 dan nilai RPD>1. Berdasarkan hasil Uji-T pada hijauan dan konsentrat menunjukkan prediksi NIRS tidak berbeda nyata terhadap hasil WCA (P>0,05) pada keseluruhan peubah yang dianalisis. Hal tersebut mengindikasikan database yang telah dikembangkan dapat mendeteksi kandungan mineral pakan lokal secara cepat menggunakan NIRS. Pengukuran nilai DCAD pada kelompok hijauan dapat diaplikasikan menggunakan perhitungan DCAD 1, 3, dan 4. Sedangkan untuk kelompok konsentrat menggunakan perhitungan DCAD 2., This research aimed to develop a mineral and DCAD database for local dairy cow feed using NIRS for faster hypocalcemia detection. A total of 232 forage and concentrate samples from West Java were collected and analyzed to determine the contents of Na, K, Ca, and Mg (AAS), P and S (spectrophotometer), and Cl (titration). The mineral content data of the feedstuffs were used to calculate the DCAD values. The Results showed variations in mineral content affecting DCAD values. All variables had R2>0,5 and RPD>1. NIRS prediction on both forage and concentrate (T-test) did not significantly differ from WCA results (P>0,05). This suggests the database enables rapid mineral detection in local feed using NIRS. DCAD calculations 1, 3, and 4 are applicable for forage, while calculation 2 is for concentrates.
Keyword: NIRS, DCAD, Hijauan, Kandungan mineral, Konsentrat

Judul: Aplikasi Short Message Service (SMS) untuk Tunanetra
Abstrak: Short Message Service (SMS) is a method of text-based communication commonly used by many mobile phone users of its cost and flexibility. Unfortunately, text-based communications require those with good eyesight, leaving behind those with visual impairment, especially low vision people. A number of devices were built exclusively for blind and low vision people to communicate with ease, but cost is often a major drawback. This study developed a mobile application that helps the visually impaired to use the SMS feature on Android uses Waterfall method. This study resulted in an application that allows low vision users in using SMS feature on Android.
Keyword: