Judul: Pemberian Tepung Daun Kemangi (Ocimum basilicum) terhadap Organ Dalam dan Produksi Amonia Ayam Broiler yang Diinfeksi Escherichia coli
Abstrak: Kemangi leaf meal contains essential oils that could overcome digestive problem. In addition there are flavonoid substances in kemangi leaf meal that gives benefits to protect cells and also has antibacterial activity. This research aimed to determine the effects of antibacterial (Escherichia coli) with kemangi leaf meal level by 1%, 2%, and 3%. Experimental design used in this study was completely randomized design (CRD) with 6 treatments and 3 replications with P0 = standard diet, uninfected E. Coli broiler (positive control); P1 = standard diet, infected E. Coli broiler (negative control); P2 = P1, diet with 1% kemangi leaf meal; P3 = P1, diet with 2% kemangi leaf meal; P4 = P1, diet with 3% kemangi leaf meal; P5 = P1, drink with ampicol antibiotic (1g 2L-1 water). Parameters that observed include digestive organs, visceral organs, levels of ammonia and water content of excreta. The results showed that kemangi leaf meal with a different level (P<0.05) of effect to the intestine, wipe and moisture content of excreta
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Judul: Respon Imunitas Ayam Broiler dan Total Koloni Escherichia coli Terhadap Penambahan Tepung Daun Kemangi (Ocimum basilicum) Dalam Ransum
Abstrak: Ocimum basilicum can be used as an antibacterial compound of colibacillosis (Escherichia coli). This study aims to study the response of Ocimum basilicum supplementation as antibacterial E.coli in the diets to the broiler immune system and total colony of bacterial E. coli in broiler excreta. The experiment used completely randomized design with six treatments and three replications where each plot consisted of 10 broilers. The treatment of diets were R0: control diets, R1: R0 + E. coli infected (control negative), R2: R1 + 1% Ocimum basilicum, R3 : R1 + 2% Ocimum basilicum, R4 : R1 + 3% Ocimum basilicum, and R5 : R1 + antibiotic. The variables observed were total colony of bacterial E. coli in broiler excreta, total number of leukocytes, percentage of differential leukocyte, and percentage of lymphoid organs. The results indicate that the supplementation of Ocimum basilicum reduced total colony of bacterial E. coli in broiler excreta and the supplementation of Ocimum basilicum increased immune system of broiler.
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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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