Judul: Susut Bobot dan Waktu Rekondisi Pedet Jantan Sapi Peranakan Friesian Holstein (PFH) pada Proses Transportasi dengan Perbedaan Kepadatan
Abstrak: Transportasi ternak di Indonesia khususnya jalur darat belum memiliki standar, ukuran dan jenis secara spesifik, sehingga dapat menjadikan ternak stres selama proses transportasi. Penelitian ini bertujuan untuk mengetahui susut bobot dan waktu rekondisi pasca transportasi pada pedet Peranakan Friesian Holstein (PFH) dengan perbedaan kepadatan yaitu ±0.43 m2ekor-1 (di masyarakat) dan ±0.58 m2ekor-1 (FAWC 2007). Penelitian ini menggunakan 28 ekor pedet (PFH) dengan rata-rata umur ±4 bulan dan rata-rata bobot badan 98.82±5.08 kg yang ditransportasikan selama 6 jam. Peubah yang diamati meliputi iklim mikro (suhu dan kelembapan), nilai THI (Temperature Humidity Index), penyusutan bobot badan, waktu rekondisi, tingkah laku loading dan unloading serta tingkah laku pasca transportasi. Hasil penelitian menunjukan selama transportasi nilai THI (Temperature Humidity Index) dikisaran 77.64-81.00, sehingga ternak mengalami stres ringan dan sedang. Pasca transportasi ternak mengalami stres ringan dengan nilai THI (Temperature Humidity Index) sebesar 77.31. Penyusutan bobot badan pasca transportasi sebesar 8.6% (8.5±2.71 kg) dan waktu rekondisi terjadi pada hari ke-3 dan ke-4. Kepadatan selama transportasi tidak menyebabkan perbedaan penyusutan bobot badan dan waktu rekondisi. Tingkah laku yang paling sering dimunculkan pedet (PFH) saat loading adalah berhenti sejenak dan saat unloading adalah melompat. Tingkah laku yang dominan dilakukan pasca pengangkutan adalah makan dan minum.
Keyword: PFH, recovery, space allowance, tingkah laku

Judul: Physiological Response, Behavior and Performance of Ongole Grade and Local Crossbreed Cattle on Short Distance Transportation
Abstrak: Transportasi merupakan elemen penting dalam rantai industri sapi pedaging. Penelitian ini bertujuan mengevaluasi respon fisiologis, tingkah laku dan performa Sapi Peranakan Ongole dan Sapi Silangan Lokal selama rekodisi pada proses transportasi jarak dekat. Penelitian ini menggunakan Sapi Peranakan Ongole (PO) dan Silangan Lokal Jantan masing-masing 8 ekor dengan umur I1-I2 (18-30 bulan). Rataan bobot badan Sapi Peranakan Ongole dan Silangan Lokal berturut-turut adalah 291,5±23,5 kg dan 289,0±26,4 kg. Peubah yang diamati meliputi kondisi mikroklimat lingkungan, respon fisiologis, tingkah laku dan performa ternak. Hasil penelitian menunjukkan bahwa berdasarkan nilai THI, sapi mengalami stres panas sedang selama transportasi dan stres panas ringan selama rekondisi. Respon fisiologis dan penyusutan bobot badan Sapi Peranakan Ongole dan Silangan Lokal adalah sama. Tingkah laku dominan saat proses pemuatan (loading) dan penurunan (unloading) adalah adalah tergelincir yaitu masing-masing sebesar 30,8% dan 32,7%. Rataan penyusutan bobot badan Sapi Peranakan Ongole 7,0±4,0 kg (2,5%) dan Sapi Silangan Lokal 9,3±5,3 kg (3,1%). Selanjutnya lama rekondisi Sapi Peranakan Ongole dan Silangan Lokal sama yaitu selama 10 hari., Transportation is an important element in beef industry. This study aims to evaluate the physiological response, behavior and performance during recondition period of Ongole and Local Crosbreed Cattle in short distance transportation. This study used 8 Ongole Crossbreed and 8 Local Crossbreed Cattle bull with average age of I1-I2 (18-30 months). The average body weight of Ongole and Local Crossbreed Cattle were 291,5±23,5 kg and 289,0±26,3 kg respectively. The parameters observed were environmental microclimate conditions, physiological responses, behavior and performance of cattle. The results of THI showed that cattle was on medium heat stress during transportation and mild heat stress during recovery time. Physiological response and body weight loss of Ongole grade and Local Crossbreed Cattle were similar. The dominant behavior during loading and unloading process was slips, which were 30,8% and 32,7% respectively. Average body weight loss of Ongole grade and local crosbreed were 7,0±6,8 kg (2,5%) and 9,3±5,3 kg (3,1%). Furthermore, length of recovery time of Ongole and Local Crosbreed Cattle was similar for ten days.
Keyword: respon fisiologis, sapi peranakan ongole, sapi silangan lokal, tingkah laku, transportasi

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