Judul: Tingkah Laku Kerbau Rawa yang Dipelihara Secara Feedlot yang Diberi Ransum Dengan Suplementasi Campuran Garam Karboksilat Kering (CGKK)
Abstrak: At present buffalo farming system is still traditional with a relatively low quality of feed. Improvement of the feed quality needs to be developed. The experiment was aimed to study the behaviour and physiological parameters of swamp buffalo as a response of different treatment of feed supplemention protected Lemuru fish oil in dried of carboxylate salts mixture (DCM) 0% and 4,5%. The animals used were six heads of male buffaloes. Observations were conducted in three times, in the morning (8:00 am - 10:00 am), around noon (12:00 am – 2:00 pm) and afternoon (3:00 pm - 5: 00 pm). The parameters included eating behaviour, agonistic, eliminative, grooming, and vocalization. Physiological parameters measured were pulse rate, respiration rate, and rectal temperature. Data analysis used were Man Whitney and Friedman test to analysis frequency different of while two treatment., where as the data of physiology were analysed by t test method. The results show that the eating, agonistic, and eliminative behaviour were dominantly presented in the morning and afternoon both in the two treatments. Grooming behaviour occurred during the day. The physiology of the buffalo bull were not different in both feed treatment. It is concluded that the feed treatments had no effect on the behaviour and phisiology of the swamp buffalo, therefore CGKK can be recommended as a good quality feed for local buffalo.
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Judul: Perdagingan dan Distribusi Daging Kerbau Rawa dan Sapi Peranakan Ongole yang Digemukkan Menggunakan Ransum dengan Suplementasi Campuran Garam Karboksilat Kering
Abstrak: Swamp buffalo is commonly regarded as an animal with relatively low productivity. The objective of the study was to examine the meat yield and it’s distribution within carcass from Swamp buffalo and Ongole Grade cattle fed concentrate containing protected lemuru fish oil in the form of dry carboxylate salt mixture (DCM). Fourteen animal were used in the study comparising eight Ongole Grade cattle and six Swamp buffalo. Each group of animal was allotted to control ration and control ration plus DCM. They were set up in a factorial design with species and ration as the factors. The result showed that administration of protected lemuru fish oil in the ration did not obviously influence meat yield and each distribution carcass. However Swamp buffalo had significantly higher slaughter weight but lower carcass weight (P<0,05). The Swamp buffalo carcass yield were significantly lower weight of striploin, tenderloin, silverside and topside if compared to Ongole Grade cattle.
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Judul: Aproksimasi Fungsi Sinus dan Kosinus sebagai Kombinasi Linear dari Fungsi Eksponensial
Abstrak: Salah satu gagasan yang menarik dalam matematika adalah aproksimasi suatu fungsi oleh fungsi lain. Sebagai contoh, fungsi polinom dapat diaproksimasi menggunakan deret Taylor atau fungsi persamaan diferensial dapat diaproksimasi menggunakan deret Fourier. Adapun fungsi yang dapat mengaproksimasi fungsi lain salah satunya adalah fungsi eksponensial. Kemungkinan mengaproksimasi fungsi dengan kombinasi linear dari fungsi eksponensial dari bentuk eˣ, e²ˣ, ... dianggap sebagai perkembangan sejajar dengan gagasan Deret Taylor yang mengaproksimasi fungsi dengan kombinasi linear dari segi fungsi kuadrat. Fungsi sin x dan cos x digunakan sebagai target untuk menilai seberapa baik aproksimasi yang dilakukan oleh fungsi yang diberikan. Aproksimasi fungsi sinus dan kosinus menggunakan hampiran Taylor lebih akurat dibandingkan dengan aproksimasi menggunakan fungsi eksponensial.
Keyword: Aprosimaksi eksponensial, aproksimasi fungsi, aprosimaksi Taylor, fungsi eksponensial