Judul: Pemberian Minyak Kelapa Sawit dan Minyak Ikan Lemuru dalam Ransum Terhadap Profil Darah dan Persentase Organ Dalam Ayam Broiler
Abstrak: Penelitian ini bertujuan untuk mengevaluasi pengaruh pemberian minyak kelapa sawit dan minyak ikan lemuru terhadap profil darah dan persentase organ dalam ayam broiler. Penelitian ini menggunakan 200 ekor day old chick (DOC) broiler strain Ross yang dibagi dalam 4 perlakuan dan 5 ulangan. Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan perlakuan P0 = ransum mengandung minyak kelapa sawit 3% dan minyak ikan lemuru 0%, P1 = ransum mengandung minyak kelapa sawit 2% dan minyak ikan lemuru 1%, P2 = ransum mengandung minyak kelapa sawit 1% dan minyak ikan lemuru 2%, P3 = ransum mengandung minyak kelapa sawit 0% dan minyak ikan lemuru 3%. Data yang diperoleh dianalisis menggunakan analisis varians (Anova) dan dilakukan uji lanjut Duncan. Peubah yang diamati adalah profil darah, persentase bobot organ dalam, persentase bobot saluran pencernaan dan panjang relatif saluran pencernaan. Hasil penelitian menunjukkan bahwa perlakuan tidak berpengaruh nyata (P>0.05) terhadap jumlah hematokrit, eritrosit, leukosit, dan deferensiasi leukosit (monosit, eosinofil, basofil), persentase bobot jantung, ginjal, empedu, pankreas, bursa fabricius, thimus, proventrikulus, gizzard, panjang relatif duodenum, persentase bobot dan panjang relatif jejunum, ileum, sekum, serta kolon. Pemberian minyak ikan lemuru 3% berpengaruh nyata (P<0.05) meningkatkan nilai hemoglobin, diferensiasi leukosit (heterofil dan limfosit), persentase bobot hati, persentase bobot limfa, serta menurunkan persentase bobot duodenum dan nilai rasio H/L. Disimpulkan bahwa pemberian ransum mengandung minyak ikan lemuru 3% dalam ransum memberikan dampak positif terhadap profil darahm ayam broiler, dapat meningkatkan kadar hemoglobin, limfosit, dan menurunkan tingkat stress dari taraf tinggi ke taraf rendah., The purpose of this study was to evaluate the effect of giving palm oil and lemuru fish oil on the blood profile and the percentage of internal organs in broiler chickens. This study used 200 Ross broilers day old chick (DOC) is divided into 4 treatments and 5 replications. This research used a completely randomized design (CRD), where the treatments level of palm oil and lemuru fish oil were respectively P0 = rations containing 3% palm oil and 0% lemuru fish oil, P1 = rations containing 2% palm oil and 1% lemuru fish oil, P2 = rations containing 1% palm oil and 2% lemuru fish oil, P3 = rations containing 0% palm oil and 3% lemuru fish oil. The data obtained were analyzed using analysis of variance (Anova) and Duncan's further test was carried out. Some of the observed variables included blood profile, percentage of internal organ weight, percentage of digestive tract weight and relative length of digestive tract. The results showed that the treatment had no significant effect (P>0.05) on the number of hematocrits, erythrocytes, leukocytes, and leukocyte differentiation (monocytes, eosinophils, basophils), the percentage of weight of the heart, kidneys, bile, pancreas, bursa of Fabricius, thymus, proventiculus, gizzard, relative length of duodenum, percentage of weight and relative length of jejunum, ileum, cecum, and colon. Giving 3% lemuru fish oil significantly (P<0.05) increased hemoglobin value, leukocyte differentiation (heterophile and lymphocyte), liver weight percentage, spleen weight percentage, and decreased duodenal weight percentage and H/L ratio value. It was concluded that the provision of rations containing 3% lemuru fish oil in the ration had a positive impact
Keyword: blood profile, lemuru fish oil, liver percentage, palm oil

Judul: Carcass Composition and Chemical Composition of Broiler Meat Containing Lemuru Fish Oil and Palm Oil in Feed
Abstrak: Penelitian ini bertujuan menganalisis pengaruh antara minyak sawit dan pakan minyak ikan lemuru di dalam pakan terhadap komposisi karkas dan komposisi kimia daging ayam broiler. Penelitian ini menggunakan 200 ekor ayam broiler yang dipelihara sejak DOC. Ayam dibagi menjadi 4 kelompok perlakuan dan 5 ulangan. Perlakuan yang diberikan terdiri atas P0 = ransum mengandung 3% minyak sawit + 0% minyak ikan lemuru, P1 = ransum mengandung 2% minyak sawit + 1% minyak ikan lemuru, P2 = ransum mengandung 1% minyak sawit + 2% minyak ikan lemuru, P3 = ransum mengandung 0% minyak sawit + 3% minyak ikan lemuru. Setiap perlakuan terdiri dari 2 fase, yaitu fase starter (0-18 hari) dan grower (19-35 hari). Peubah yang diuji adalah komposisi karkas, potongan komersial, rasio daging tulang, serta komposisi kimia daging. Data dianalisis dengan menggunakan ANOVA, jika berbeda nyata dilakukan uji Duncan. Perlakuan minyak ikan lemuru sebanyak 3% memberikan pengaruh nyata (P<0.05) menurunkan komposisi karkas, namun meningkatkan persentase paha atas. Penggunaan pakan minyak ikan lemuru sampai dengan taraf 2% dengan minyak sawit 1% lebih efektif dibandingkan dengan pakan kontrol terhadap komposisi karkas dan komposisi kimia daging., This research aimed to analyze the effect of palm oil and lemuru fish oil in the feed on the carcass composition and chemical composition of broiler meat. This research used 200 broilers that were reared from DOC. Chickens were divided into 4 treatment groups and 5 replicates. The treatments consisted of P0 = ration containing 3% palm oil + 0% lemuru fish oil, P1 = ration containing 2% palm oil + 1% lemuru fish oil, P2 = ration containing 1% palm oil + 2% lemuru fish oil, P3 = ration containing 0% palm oil + 3% lemuru fish oil. Each treatment consisted of 2 phases, starter (0-18 days) and grower (19-35 days). The variables tested were carcass composition, abdominal fat, commercial cuts, bone meat rasio, and the chemical composition of meat. The data were analyzed using ANOVA, if significantly different were followed by Duncan test. Lemuru fish oil treatment as much as 3% had a significant effect (P<0.05) in reducing carcass composition, but increasing the percentage of thighs. The use of lemuru fish oil feed up to 2% with 1% palm oil was more effective than control feed on carcass composition and chemical composition of meat.
Keyword: broiler, carcass composition, chemical composition, lemuru fish oil, palm oil

Judul: Bifurkasi Hopf pada Model Siklus Bisnis Kaldor Kalecki tanpa dan dengan Waktu Tunda
Abstrak: Business cycle model is one of dynamical system models in economic. One of the business cycles model is Kaldor-Kalecki model. Kaldor-Kalecki business cycle model that is written in delayed defferential equations, is a business cycle model that involves gross product and capital stock of a company. In this paper Kaldor-Kalecki business cycle model is analyzed using both nondelay and delay in time of capital stock. By Taylor expansion for the time delayed model, an analysis of stability around the fixed points has been done. Furthermore, by using Hopf bifurcation theorem, it can be shown that there exists periodic orbits and limit cycle. In the nondelayed model, changing the parameter of goods market could lead to the occurrence of Hopf bifurcation and the existence of limit cycle. Similarly, for the delayed model, it has been shown that changing the time delay parameter may result in the occurrence of Hopf bifurcation and limit cycle.
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