Judul: Komposisi Jaringan Pada Potongan Karkas Domba Garut Dan Ekor tipis Umur Enam Bulan Dengan Ransum Berbasis Indigofera sp
Abstrak: Meat from younger lamb is more desirable than that from older lamb. The objective this study was to investigate the effect of breed from local sheep on carcass tissue composition and distribution within wholesale cuts. The experiment used four Garut and four Thin Tail lamb aged three months old. They were fattened for three month with pelleted ration comprising 30% Indigofera sp. and 70% concentrate. The results showed that carcass composition and distribution within wholesale cuts were similar between Garut and Thin Tail lamb. Garut lamb carcass had significantly higher twelveth rib fat thickness than that from Thin Tail lamb carcass. The results of this study indicate that Garut and Thin tail lamb had a meat yield, fat, and bone percentages of 62.48%, 13.62%, and 23.89% respectively. Garut sheep had significantly higher (P <0.05) back fat thicknesethan the thin tail lamb.The meatfrom the “breast” and “shank”cut were significantly higher (P <0.05) in Garut lamb compared Thin Tail lamb.
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Judul: Komposisi Jaringan pada Potongan Komersial Karkas Domba Garut dan Ekor Tipis Umur Sebelas Bulan dengan Ransum Penggemukkan Mengandung Indigofera sp.
Abstrak: Garut and Thin Tailed sheep are categorized as small ruminant animal. They are potential as meat producers. The aim of this research was to examine differences in tissue composition of commercial cuts from garut and Thin Tailed sheep aged 11 months and fattened on ration containing Indigofera sp. The study used four garut and four Thin Tailed sheep with initial body weight of 14,9 ± 1,1 kg and 13,6 ± 0,6 kg respectively (CV=10,14%). The experiment was set up ini completely randomized design. The animals were intensively fattened for three months in individual cages. They were fed ad libitum with pelleted ration contained Indigofera sp.. The sheep were slaughtered, dressed, and the chilled carcasses were cutted into seven commercial cuts and each cuts were dissecsed into muscle, fat, and bone. The results showed that there were no significantly differences in carcass muscle and bone weight, but carcass fat weight. Garut sheep had significantly (P<0,05) lower fat weight in the carcass compare to Thin Tailed sheep. The differences occured primaly in shoulder, loin, breast, and leg cuts. However on percentage bases, there were significant (P<0,05) between breed differences in carcass compotition. The garut sheep carcass contained significantly more muscle and bone, but less fat than those of Thin Tailed sheep.
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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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