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: Construction of Strongly Optimal Binary Linear Code with Minimum Distance 9 and 11
Abstrak: A binary linear code of length n over q F is a subspace of n q F . A code has three parameters that attached to it, namely length, dimension, and minimum distance. A code with length n, dimension k and minimum distance d is often called [n, k, d ]-code. Usually, when two parameters are given, then we want to find a code that has the best value for the last parameter. Based on Gilbert- Varshamov bound, if a [n, k, d ]-code exists and can not be expanded, we call it a strongly optimal code. In this paper, we construct strongly optimal code with minimum distance 9 and 11. In constructing the code, we created a theorem and algorithm based on Gilbert-Varshamov bound before we implement the algorithm to MAPLE programming language. Because of computational limitations, the program can only construct up to k = 10 for d = 9 and k = 12 for d = 11.
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