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: Suplementasi Tepung Daun Kemangi (Ocimum basilicum) Terhadap Performa dan Kualitas Karkas Ayam Broiler Diinfeksi Escherichia coli
Abstrak: This research was conducted to evaluate the effect suplementation kemangi of meal (Ocimum basilicum) in the diet as E. coli antibacteria in improving broiler performans and carcass quality. This experiment used 180 day old chicks (DOC) of broiler strain which were kept litter system for 34 days. The experiment used completely randomized design with six treatment and three replications consisting of 10 broilers in each replication. The treatment diet were R0 = control diet, R1 = R0 infected with E. coli, R2 = R1 + 1% kemangi meal, R3 = R1 + 2% kemangi meal, R4 = R1 + 3% kemangi meal, R5 = R1 + antibiotic. The data were analyzed with analysis of variance. The variable observed were feed consumption, body weight gain, final of body weight, feed conversion ratio, mortality, total colony of E. coli, carcass weight, abdominal fat, and meat cholesterol. The result showed that use of kemangi meal up to 3% in ration decreased the number of E.coli in excreta before infection. The result for carcass quality showed that the use of kemangi up to 3% in the diet decreased meat cholesterol. The treatment did not affect performance, final body weight, carcass and abdominal fat.
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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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