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: Kandungan Nutrisi dan Asam Lemak Daging Kerbau Rawa dan Sapi Peranakan Ongole yang Digemukkan dengan Suplementasi Campuran Garam Karboksilat Kering
Abstrak: Buffalo is a potential meat producing animal. There is an increasing demand of buffalo meat in Indonesian. The study was aimed to examine the fatty acids composition and chemical characteristic of meat from cattle and buffalo fatten on feedlot ration supplemented by protected lemuru fish oil in the form of dried carboxylate salt mixture (DCM). The research used six swamp buffalo and eight Ongole grade cattle. They were assigned to 2x2 factorial model with two animal species (cattle and buffalo) and two level ration (suplemented and not supplemented ration with dried carboxylate salt).The results of this study showed that swamp buffalo and Peranakan Ongole cattle fatten on feedlot ration using protected lemuru fish oil in the form of DCM, produced meat with similar chemical characteristic. Meanwhile, they were significant interaction between ruminant species and ration on fatty acid composition. In buffaloes the addition of the protected lemuru fish oil could significantly decreased (p<0,05) the saturated fatty acid but significantly (p<0,05) increased the unsaturated fatty acid in meat. However, this was not the case for 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