Judul: Aklimatisasi sapi PO dan sapi bali merespons perubahan cuaca di Kabupaten Merauke Papua
Abstrak: The objective of this study was to determine the physiological responses and acclimatization of Ongole Crossbred (OC) cattle (Bos indicus) and bali cattle (Bos javanicus) in response to weather changes in Merauke district. The experiment was carried out in Wasur Village II, Merauke district. Eighteen OC cattle and 12 bali cattle, age ranged between 2-5 years were used. In the morning the cattle were removed from the cage and placed in the ranch and in the evening were put back into the cage. Meteorological data were recorded in the experiment environment where cattles were located during 8 am until 4 pm, included dry bulb temperature, wet bulb temperature, wind speed, and solar radiation. Relative humidity (RH) and Temperature Humidity Index (THI) were calculated. The physiological responses (rectal temperature, skin temerature, body temperature, respiration rate, and pulse rate) of OC and bali cattles were monitored every 21 days on April and May. Data were analyzed using the repeated measurement GLM procedure. Simple linear regression procedures was utilized to establish acclimatization ability from each breed of cattle. The different weather between west monsoon on April and east monsoon on May were showed that bali cattles were able to maintain the physiological responses during monsoon changed. Rectal temperature, skin temperature, and respiratory rate data indicated that bali cattles acclimatization with east monsoon (P>0,05), while Ongole Crossbred cattles that should acclimatization with weather changes (P <0,05). Bali cattle have the ability termoregulatory better than PO cattle.
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Judul: Physiological Responses of Ongole-Cross Breed Dairy Cows to Changes in Stable Microclimate
Abstrak: Produktivitas peternakan dipengaruhi oleh sejumlah faktor, termasuk kualitas genetik hewan dan faktor-faktor lingkungan di lokasi tempat ternak dipelihara. Ternak sapi perah yang tidak tahan terhadap cekaman panas mengakibatkan penurunan konsumsi pakan yang akhirnya berdampak pada rendahnya tingkat produktivitas. Penelitian ini bertujuan melihat perubahan mikroklimat kandang, respons fisiologis, aktivitas kadar superoksida dismutase (SOD), serta mencari regio alternatif selain regio rektal dalam pengukuran suhu. Penelitian ini mengukur mikroklimat kandang berupa suhu, kelembapan kandang, dan temperature humidity index menggunakan thermohygrometer, frekuensi denyut jantung menggunakan stetoskop, suhu rektal menggunakan termometer, dan suhu permukaan menggunakan kamera termal inframerah. Jumlah sapi yang digunakan sebanyak 6 ekor sapi perah betina Peranakan Ongole dan dilakukan pada 2 waktu yaitu pagi dan siang selama 5 hari saat cuaca panas. Hasil dari penelitian menunjukkan perubahan dengan hasil yang signifikan (p, Livestock productivity is influenced by a number of factors, including the genetic quality of the animals and environmental factors in the location where the animals are kept. Dairy cattle that are not resistant to heat stress result in decreased feed consumption, which in turn leads to lower productivity levels. The aim of this study was to assess changes in housing microclimate, physiological responses, superoxide dismutase (SOD) activity, and to find alternative regions to the rectal region for temperature measurement. This study measured cage microclimate in the form of temperature, cage humidity, and temperature humidity index using a thermohygrometer, heart rate frequency using a stethoscope, rectal temperature using a thermometer, and surface temperature using an infrared thermal camera. The number of cows used was 6 female Peranakan Ongole dairy cows and was carried out at 2 times, namely morning and afternoon for 5 days during hot weather. The results of the study showed changes with significant results (p<0.05) in the data of cage microclimate and physiological responses, but not in superoxide dismutase activity (p>0.05). Alternative regions with values close to rectal temperature are found in the vulva, costalis, udder, and occularis regions, but the most ideal region in measuring temperature using a thermal camera is the occularis region.
Keyword: sapi perah, suhu permukaan, kamera termal, superoksida dismutase

Judul: Cycle Hamilton pada Graf Lengkap, Graf Regular, dan Graf 2-Connected 4-Regular Berorder Kurang dari Sepuluh
Abstrak: Suatu graf disebut graf Hamilton apabila graf tersebut memuat cycle Hamilton, yaitu cycle yang melewati setiap vertex tepat satu kali. Menentukan keberadaan cycle Hamilton pada suatu graf dapat menggunakan syarat cukup yang berupa teorema-teorema yang telah diperkenalkan sejak tahun 1950-an. Beberapa syarat cukup yang dibahas dalam karya ilmiah ini adalah syarat cukup yang berhubungan dengan graf lengkap dan graf regular. Suatu graf lengkap berorder 𝑛������ ≥ 3 dan graf r-regular berorder 𝑛������ ≤ 2𝑟������ + 1 merupakan graf Hamilton, Karena kedua graf tersebut memuat cycle Hamilton. Selanjutnya, syarat cukup tersebut digunakan untuk menentukan keberadaan cycle Hamilton pada graf 2-connected 4- regular berorder kurang dari 10.
Keyword: graf Hamilton, graf regular, graf lengkap, graf 2-connected 4-regular