Judul: Kecernaan Nutrien dan Performa Sapi Pasundan yang Diberi Suplemen Pakan Mengandung Daun Lamtoro dalam Bentuk Wafer
Abstrak: Pasundan cattle is a local beef cattle from West Java Indonesian that expected to fulfill the meat demand, especially in West Java. The increasing efforts of beef cattle productivity is constrained by the availability of forage feed materials. Forage feed availability fluctuate especially during the dry season. Another limitation in the increasing of beef cattle productivity is the lack of nutrient content in the feed, such as protein. To overcome these problems required the addition of feed supplement in the Wafer form containing Leucaena Leaves. The purpose of this research was to analyze the effect of Wafer supplement in the different levels on the nutreint digestibility and performance of Pasundan cattle. This study used blok randomized design using 4 treatments and 5 replications. The treatments were P0: conventional feed (bran, rice straw, and elephant grass), P1: conventional feed + 5% Leucaena wafer, P2: conventional feed + 9.5% Leucaena wafer, P3: conventional feed + 15% Leucaena wafer). The grouping is based on body weight ie. very small body weight (70.23 ± 9.15 kg), small (99.55 ± 7.87 kg), medium (115.23 ± 8.44 kg), large (136.59 ± 7.10 kg). The variables were nutrient intake and digestibility, final body weight, daily body weight gain, feed efficiency, and income over feed cost (IOFC). The result showed that the addition of wafers supplement containing lamtoro leaves did not affect the nutrient digestibility. However, the addition of wafer supplement at level 9.5% increased (P<0.05) nutrient consumption, body weight, daily weight gain, feed efficiency, and IOFC compared to the other treatments.
Keyword: nutrient digestibility, performance, wafer feed suplement, pasundan cattle

Judul: Evaluation of Feeding Completer Wafers Containing Lamtoro Leaves-Cassava Leaves to Sheep
Abstrak: Legum dan limbah pertanian merupakan bahan yang dapat digunakan sebagai pengganti hijauan. Contoh leguminosa adalah daun lamtoro dan contoh limbah pertanian adalah daun singkong. Penelitian ini bertujuan untuk mengevaluasi kualitas pakan wafer yang mengandung lamtoro levaes-daun singkong dengan pemberian wafer dengan persentase yang berbeda. Penelitian ini menggunakan 5 perlakuan dengan 4 ulangan. Perlakuan yang diberikan adalah P0 = pakan konvensional (hijauan), P1 = pakan konvensional + 25% pakan wafer, P2 = pakan konvensional + 50% pakan wafer, P3 = pakan konvensional + 75% pakan wafer, P4 = 100% pakan wafer. Data dianalisis menggunakan ANOVA dan uji Duncan. Berdasarkan kualitas fisik yang dilihat dari kadar air, aktivitas air, densitas, dan daya tahan pakan wafer memiliki kualitas yang lebih baik. Kondisi fisiologis pada penelitian ini normal dilihat dari parameter suhu rektal, denyut jantung, dan pernapasan. Hasil percobaan menunjukkan bahwa perlakuan pakan berpengaruh terhadap (P<0,05) konsumsi pakan, pertambahan bobot badan, dan efisiensi pakan. Hasil penelitian menunjukkan bahwa pemberian pakan wafer akan meningkatkan konsumsi zat gizi BK, PK, SK, LK pakan domba. Pertambahan bobot badan terbaik pada pemberian pakan wafer dinyatakan oleh P3 dengan nilai 105,80 g ekor-1 hari-1. Hasil efisiensi pakan terbaik dari penelitian ini adalah P2 dengan nilai 7,40 % dan IOFC hasil terbaik adalah P4 dengan nilai Rp. 395.583, Legumes and agricultural waste are materials that can be used as substitutes for forage. An example of leguminosae is lamtoro leaves and an example of agricultural waste is cassava leaves. This study aimed to evaluate the quality of wafer feed containding lamtoro levaes-cassava leaves by feeding wafers with different percentages. This research used 5 treatments with 4 replications. The treatments given were P0 = conventional feed (forage), P1 = conventional feed + 25% wafer feed, P2 = conventional feed + 50% wafer feed, P3 = conventional feed + 75% wafer feed, P4 = 100% wafer feed. Data were analyzed using ANOVA and Duncan's test. Based on the physical quality as seen from the water content, water activity, density, and durability the wafer feed has better quality. The physiological condition on this research was normal as seen from the parameters of rectal temperature, heart rate, and respiration. The result of this experiment showed that feed treatments affected (P<0.05) consumption feed, body wight gain, and feed efficiency. The results of this research indicate that the giving of wafer feed will increase the consumption nutrient DM, CP, CF, EE of sheep feed. The best result of body wight gain that feeding wafers is trated by P3 with value of 105,80 g head-1 day-1 . The best result of feed efficiency from this research is P2 with value 7,40 % and best result IOFC is P4 with value Rp. 395.583.
Keyword: feed wafers, nutrient quality, physical quality, sheep performance

Judul: Pemodelan Harmonik Generasi Kedua Pada Struktur Kristal Perovskite (MAPbI3) Menggunakan Metode Ikat Hiperpolarisabilitas Sederhana Nonlinier.
Abstrak: Metilamonium timbal iodida (MAPbI3) dikenal memiliki struktur fase transisi yang bergantung suhu. MAPbI3 memiliki bulk point group dan surface point group pada kristal sentrosimetrik berupa 4/mmm (simetri D4h) dan mm2 (simetri C2v). Bulk point group pada kristal non-sentrosimerik adalah 4mm (simetri C4v). Penelitian ini meninjau second harmonic generation (SHG) pada MAPbI3 simetri C2v dan D4h dengan simplified bond hyperpolarizability model (SBHM). Pada kristal sentrosimetrik simeri D4h terdapat inversi simetri yang menyebabkan elektrik dipol terinduksi SHG menjadi terlarang, namun tidak berlaku pada permukaan simetri C2v karena inversi simetri hampir tidak ada. Hasil SBHM menunjukkan terdapat intensitas SHG pada simetri C2v dan tidak ada intesitas SHG pada simetri D4h.
Keyword: SBHM, SHG, MAPbI3, simetri D4h, simetri C2v