Judul: Kondisi Fisiologis Domba Garut Jantan yang Mendapat Ransum dengan Kadar Kromium dan Kation-Anion Berbeda pada Suhu Lingkungan Panas
Abstrak: Chromium (Cr) is an essential mineral for the animal body and required for normal metabolism of carbohydrate, protein, lipid and nucleic acid, hormonal regulation and immune function. Degradation of Cr level in sheep body increases stressor hormone that decreases health status of the animals. The objective of this experiment was to study the efficacy of chromium and dietary cation anion balance (DCAB) to improve physiological condition of sheep in high environment temperature. Twenty four of sheep were grouped in six weight categories and allocated into four dietary treatments. Dietary treatments were: R0= basal diet DCAB +14, R1= basal diet with 3 ppm organic-Cr, R2= DCAB 0 without organic-Cr, R3= DCAB 0 with 3 ppm organic-Cr. The basal diet composed of 35% maize straw and 65% concentrate. Diet and water were offered ad libitum. Rectal temperature, respiration rate, and bloods profile were observed. Rectal temperature, respiration rate, and bloods profile were not influenced by organic-Cr supplementation and manipulation of dietary cation anion balance. Result of environmental temperature 33 OC and humidity 68 % is rectal temperature (38.70-39.14 OC), respiration rate increases (8- 15 %), and stress indicated in all of sheep from netrofil/limfosit ratio 2-3. It was concluded that the supplementation of organic-Cr and manipulation of DCAB is not influence when the environmental temperature varied from 24-33 OC.
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Judul: Kecernaan Serat Pakan Pada Domba Garut Betina Yang Mendapat Ransum Dengan Nilai Nisbah Kation Anion Dan Kromium Berbeda
Abstrak: The experiment was aimed at evaluating dry matter intake and nutrient digestibility in Garut breed ewes offered ration differing in dietary cation anion ratio and supplemented with organic chromium (Cr) from Ganoderma lucidum. Twenty four female Garut breed sheep aged two years with initial weight of 27.70 ± 2.24 kg were alocated into a Randomized Block Design. The sheep were grouped into 4 weight groups based on their initial weight and allocated into six experimental rations. The experimental rations were: 1) RA = basal diet, 2) RB = basal diet + 3 ppm inorganic cromium, 3) RC = basal diet + 3 ppm organic Cr from rice straw, 4) RD = basal diet + 3 ppm organic Cr from oil palm by fiber, 5) RE = basal diet with DCAB –10 +3 ppm organic Cr from rice straw and 6) RF = basal diet with DCAB –10 + 3 ppm organic Cr from oil palm fiber. There were no effect of dietary cation anion ratio and organic Cr supplementation on dry matter intake, palatability, daily gain and nutrient digestibility. The result indicated that manipulation of dietary anion cation balance and supplementation of Cr at those levels were had no effect on palatability of feed, dry matter intakes, weight gain and nutrient digestibility. Keywords: anion, cation, chromium, digestibility, fiber, Garut sheep
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Judul: Penerbangan Otomatis Pesawat Tanpa Awak Jenis Sayap Tetap dengan iNav
Abstrak: Pesawat tanpa awak (UAV) dapat dikendalikan secara manual dengan remote control atau secara otomatis dengan flight controller (FC). Salah satu jenis UAV adalah sayap tetap yang memiliki bentuk seperti pesawat terbang pada umumnya. Penelitian ini bertujuan untuk melakukan penerbangan otomatis pada UAV jenis sayap tetap dengan mengkonfigurasi perangkat FC. UAV yang digunakan adalah model SkySurfer X8 dengan bentang sayap 1.4 m. FC yang digunakan adalah Matek F405-Wing yang dikonfigurasi dengan perangkat lunak iNav. Berdasarkan hasil uji terbang, UAV berhasil terbang secara otomatis mengikuti skenario yang diberikan. Skenario terjauh berupa persegi berukuran 600×600 m pada ketinggian 100 m, yang ditempuh dalam waktu sekitar 2 menit dengan kecepatan sekitar 65 km/jam. Diharapkan prosedur perakitan, konfigurasi, operasi, dan hasil data uji terbang dapat menjadi acuan dalam penelitian selanjutnya.
Keyword: iNav, penerbangan otomatis, pesawat tanpa awak, sayap tetap