Judul: The Effect of Airflow Velocity on Batur Sheep Behavior
Abstrak: Salah satu jenis domba di Indonesia yaitu domba batur dengan sebaran asli geografis di Kecamatan Batur, Kabupaten Banjarnegara, Jawa Tengah. Faktor lingkungan seperti kecepatan angin dapat mempengaruhi perilaku dan kenyamanan domba batur yang habitat aslinya berada di dataran tinggi dengan suhu rendah. Salah satu upaya untuk mengurangi heat stress adalah dengan memberikan aliran udara atau angin. Penelitian ini bertujuan untuk mengetahui pengaruh kecepatan aliran udara terhadap perilaku domba batur untuk tujuan pengelolaan lingkungan mikro kandang. Penelitian dilakukan pada 6 ekor domba selama 15 hari tanpa peningkatan kecepatan aliran udara (V0) dan 15 hari berikutnya dengan peningkatan kecepatan aliran udara (V1) dengan menggunakan kipas angin. Kecepatan aliran udara diukur menggunakan anemometer digital. Besarnya konsumsi pakan diperoleh dengan menghitung sisa pakan yang diberikan pada setiap pemberian pakan. Pengukuran durasi istirahat dan frekuensi istirahat dilakukan pada pukul 10.30–15.30 WIB. Suhu dan kelembaban kandang diukur setiap 30 menit menggunakan thermohygrometer digital. Pengujian pembandingan data rata-rata dilakukan dengan uji-t melalui bantuan perangkat lunak SPSS. Pemberian kipas angin pada kandang berhasil meningkatkan kecepatan aliran udara dalam kandang sehingga suhu dalam kandang menurun. Pemberian kipas angin juga berdampak pada peningkatan durasi istirahat, penurunan frekuensi istirahat, dan penurunan persentase konsumsi pakan., One type of Indonesian sheep is batur sheep with geographic native distribution in Batur District, Banjarnegara Regency, Central Java. Environmental factors such as wind speed can affect the behavior and comfort of batur sheep whose natural habitat is on the highlands with low temperatures. One of the efforts to reduce heat stress is by providing air or wind flow. This research aims to determine the effect of airflow velocity on the behavior of batur sheep for the purpose of pen micro environmental management. The research conducted on 6 sheep for 15 days without an increased airflow velocity (V0) and 15 days with an increased airflow velocity (V1) by a fan. The airflow velocity was measured using digital anemometer. The amount of feed consumption was obtained by calculating the remaining feed given at each feeding. The measurement of resting duration and resting frequency conducted at 10.30–15.30 WIB. The temperature and humidity of the sheepfold were measured every 30 minutes using digital thermohygrometer. Provision of a fan in the cage succeeded in increasing the speed of air flow in the cage so that the temperature in the cage decreased. Giving a fan also has an impact on increasing the duration of rest, decreasing the frequency of rest, and decreasing the percentage of feed consumption.
Keyword: airflow velocity, batur sheep, behavior, heat stress, temperature

Judul: The effect of shearing wool on sheep's behavior
Abstrak: Sheep are homeotherms or warm-blooded animals that can maintain their body temperature in a safe range, known as the thermoneutral zone, without making any impacts on their bodies. Environmental and genetic factors could affect the productivity of sheep, but the most influential is environmental factors. Temperature and humidity are some environmental factors that have a direct impact on animals. The purpose of this study is to analyze the effect of shearing wool on sheep's behavior. Ten sheep are classified into 2 treatment groups, shorn sheep (P) and unshorn sheep (TP) will be observed in the field laboratory of small ruminants, Faculty of Animal Science, IPB University for thirty days from February until March 2021. The results of this research show the effect of shearing was significant (P<0,05) on ingestive, drinking, agonistic, eliminative, resting, sleeping, caregiving, locomotion, standing and rumination behavior., Domba merupakan hewan homeoterm atau hewan berdarah panas yang mampu mempertahankan suhu tubuhnya pada kisaran tertentu, yang disebut zona termoneutral, tanpa menimbulkan dampak apa pun pada tubuhnya. Faktor lingkungan dan genetik dapat mempengaruhi produktivitas domba, namun faktor yang paling berpengaruh adalah faktor lingkungan. Penelitian ini bertujuan mengevaluasi pengaruh pencukuran wol terhadap tingkah laku domba. Penelitian ini menggunakan 10 ekor domba yang dibagi menjadi 2 perlakuan yaitu domba yang dilakukan pencukuran (P) dan domba tanpa pencukuran (TP) di Laboratorium Lapang Ruminansia Kecil, Fakultas Peternakan, IPB University dari Bulan Februari sampai Maret 2021. Hasil analisis menunjukkan bahwa pencukuran wol pada domba berpengaruh nyata (P<0,5) terhadap tingkah laku ingestive, minum, agonistic, eliminative, berbaring, tidur caregiving, locomotion, berdiri dan ruminasi
Keyword: behavior, humidity, sheep, temperature

Judul: Characterizations of low alloy steel sae 4422  plated with chromic acid (Cro3)
Abstrak: Characterizations of low alloy steel SAE 4422 plated with chromic acid (CrOrO3) was use Optical Microscopy (OM), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), RD),Energy Dispersive Analysis of X-Ray (EDAX), Hardness Test and Roughness Test. Microstructures analysis exhibits cracks and grain boundaries microcracks as a characteristics of chrome metal found at plating metal. Perlite and Ferrite as grains of steel found at base metal with grain boundaries around it. Phase analysis of plating metal appropriate to chrome metal with lattice constant (a) is 2.559 Å and phase analysis of base metal appropriate to iron ferrite with lattice constant (a) is 3.318 Å. Both plating and base metal have cubic system. Chemical analysis of plating metal at surface section exhibits that cracks area have highest value of carbon element compare with grains and grains boundaries area. While chemical analysis of base metal at cross section exhibits that perlite have highest value of carbon element compare with ferrite and grain boundaries. The hardness value of plating metal at surface section and cross section are 753 and 637 VHN. While, the hardness value of base metal and interface area at cross section are 205 and 373 VHN. The roughness value at measurement points of chrome surface for as received sample are 0.445 μm. Observation used Optical Microscopy and Scanning Electron Microscopy exhibits surface irregularities combine to form surface texture of plating metal at surface section.
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