Judul: Discriminator Variables of Linear Body Measurements on Etawah-grade Does at Sahid Farm Bogor and BPTU-HPT Pelaihari
Abstrak: Kambing PE (Peranakan Etawah) telah menyebar ke berbagai daerah di Indonesia dengan lingkungan yang berbeda-beda. Adaptasi terhadap lingkungan berakibat pada perbedaan ukuran permukaan tubuh linear pada kambing PE. Ukuran permukaan tubuh linear merupakan salah satu sifat kuantitatif yang ditentukan banyak pasang gen (poligenik) dan sangat dipengaruhi lingkungan. Penelitian ini bertujuan untuk mempelajari dan menentukan variabel pembeda kambing PE induk betina pada kondisi gigi I3 antara peternakan Sahid dan Balai Pembibitan Ternak Unggul Hijauan Pakan Ternak (BPTU-HPT) Pelaihari, dengan menggunakan analisis diskriminan. Data sekunder yang diperoleh dari Laboratorium Pemuliaan dan Genetika Ternak Fakultas Peternakan IPB University, digunakan pada penelitian ini. Variabel yang diukur adalah tinggi pundak (X1), tinggi pinggul (X2), panjang badan (X3), lebar dada (X4), dalam dada (X5), lebar pinggul (X6), panjang pinggul (X7), lingkar dada (X8), dan lingkar kanon (X9). Data dianalisis dengan statistik deskriptif, T2 Hotelling, diskriminan Fisher, dan penggolongan Wald-Anderson. Variabel pembeda ukuran permukaan tubuh linear kambing PE induk betina I3 peternakan Sahid dan BPTU-HPT Pelaihari yaitu tinggi pinggul (X2), lebar dada (X4), lebar pinggul (X6), panjang pinggul (X7), dan lingkar kanon (X9). Penggolongan Wald-Anderson menunjukkan satu kambing PE induk betina I3 di BPTU-HPT Pelaihari memiliki kemiripan ukuran tubuh dengan kambing PE induk betina I3 di peternakan Sahid., Etawah-grade (Peranakan Etawah or PE) has dispersed to some regions in Indonesia, where each region has a different environment. Adaptation to the environment causes Etawah Grade goat (PE) variations in linear body surface measurement depending on the region. Linear body surface measurements are quantitative traits determined by some gene pairs (polygenic) and highly influenced by the environment. This research aims to study and determine the discriminator variables of Etawah-grade does between Sahid farm and BPTU-HPT Pelaihari using discriminant analysis. The data will be used in this study as secondary data, obtained from Animal Breeding and Genetics Laboratory, Faculty of Animal Science, IPB University. The measured variables will be withers height (X1), hip height (X2), body length (X3), chest width (X4), chest depth (X5), hip-width (X6), hip-length (X7), chest girth (X8), and cannon circumference (X9). Data were analyzed using descriptive statistics, T2˗Hotelling, discriminant analysis Fisher, and Wald-Anderson. The discriminator variables among linear body surface measurements of Etawah-grade does between Sahid farm and BPTU-HPT Pelaihari are hip height (X2), chest width (X4), hip-width (X6), hip-length (X7), and cannon circumference (X9). The classification of Wald-Anderson showed that one Etawah-grade does on BPTU-HPT Pelaihari has a similar body size to the Etawah-grade does on Sahid farm.
Keyword: discriminator variables, discriminant analysis, etawah-grade does, linear body measurements

Judul: Peubah Pembeda Ukuran Tubuh Kambing Peranakan Etawah (PE) Induk Betina di antara Peternakan yang Berbeda
Abstrak: Kambing Peranakan Etawah (PE) merupakan hasil grading-up antara kambing etawah dan kambing kacang yang mewariskan sifat-sifat tetuanya. Perubahan morfologi pada kambing PE dapat terjadi akibat perbedaan adaptasi di kondisi ekologi yang berbeda-beda. Penelitian ini bertujuan untuk mengetahui variabel pembeda ukuran permukaan tubuh kambing PE betina dewasa yang sudah laktasi (umur 3 tahun atau kondisi gigi I3) antara BBPTU-HPT Baturraden dan BPTU-HPT Pelaihari di Kalimantan Selatan. Pengukuran permukaan tubuh linear kambing PE meliputi tinggi pundak (X1), tinggi pinggul (X2), panjang badan (X3), lebar dada (X4), dalam dada (X5), lebar pinggul (X6), panjang pinggul (X7), lingkar dada (X8), dan lingkar kanon (X9). Data dianalisis dengan statistik deskriptif, T2 Hotelling, diskriminan Fisher, dan penggolongan Ward-Anderson. Peubah pembeda ukuran permukaan tubuh linear antara kambing PE betina peternakan Baturraden dan Pelaihari ditemukan sebanyak 6 buah, yaitu tinggi pundak (X1), lebar dada (X4), dalam dada (X5), panjang pinggul (X7), lingkar dada (X8), dan lingkar kanon (X9). Penggolongan Wald-Anderson menunjukkan bahwa kelompok kambing PE di peternakan Baturraden dan Pelaihari tidak memiliki kemimripan ukuran tubuh sehingga seluruh kelompok kambing PE di masing-masing peternakan dapat dipertahankan., Etawah-grade Goat is the result of grading up between etawah goat and kacang goat that has the inheritance of their parents' trait. Morphological changes in etawah-grade goat can occur due to differences in adaptation in different ecological conditions. The purpose of this research was to determine the discriminator variables of body size measurements in BBPTU-HPT Baturraden and BPTU-HPT Pelaihari with a total of 30 heads of does in each farm. Body size measurements was performed on 3 years old Etawah-grade does which consisted of withers height (X1), hip height (X2), body length (X3), chest width (X4), chest depth (X5), hip-width (X6), hip-length (X7), chest girth (X8), and cannon circumference (X9). Data were analyzed by descriptive statistics, T2-Hotelling, Fisher discriminant, and Wald-Anderson classification. Six discriminator variables were found in Baturraden and Pelaihari, consisted of withers height (X1), chest width (X4), chest depth (X5), hip-length (X7), chest girth (X8), and cannon circumference (X9). The classification of Wald-Anderson showed that Etawahgrade does of Baturraden and Pelaihari are not similar in body size so that all Etawah-grade does can be maintained on each farm.
Keyword: analisis diskriminan, kambing peranakan etawah, peubah pembeda, ukuran tubuh, body size measurements, discriminant analysis, discriminator variables, etawah-grade goat

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4