Judul: Profil Hematologi Domba Lokal Jantan Yang Diberi Pakan
Mengandung Minyak Ikan Lemuru dan Disuplementasi Vitamin E atau Selenium
Abstrak: Penelitian ini bertujuan menganalisis pengaruh pemberian minyak ikan lemuru yang disuplementasi vitamin E atau selenium terhadap profil hematologi domba lokal jantan. Penelitian ini menggunakan 21 ekor domba jantan dengan umur 9-12 bulan dengan rata-rata bobot badan 25±2,58 kg. Penelitian ini menggunakan rancangan acak kelompok (RAK) dengan 3 perlakuan dan 7 ulangan. PL = ransum mengandung minyak ikan lemuru 6%, PE = PL + vitamin E 500 IU, PSE = PL + selenium 0.5 ppm. Peubah yang diamati dalam penelitian ini meliputi konsumsi nutrien, hematokrit, jumlah eritrosit, hemoglobin, MCV, MCHC, jumlah leukosit, diferensiasi leukosit dan rasio neutrofil/limfosit. Data yang diperoleh dianalisis menggunakan Analysis of Variance (ANOVA) dan perlakuan yang berbeda nyata diuji lanjut dengan Uji Duncan menggunakan program SPSS 25. Hasil penelitian menunjukkan bahwa perlakuan tidak berbeda nyata (P>0,05) terhadap jumlah eritrosit, leukosit dan turunannya, namun berbeda nyata (P<0,05) terhadap persentase monosit dalam darah. Simpulan dari penelitian ini adalah suplementasi vitamin E atau selenium pada pakan mengandung minyak ikan lemuru dapat menurunkan persentase monosit sehingga tingkat inflamasi pada domba jantan menurun., This research was aimed to analyze the effects of lemuru fish oil supplementation with vitamin E or selenium on the hematological profile of local male sheep. This research used 21 male sheep aged 9-12 months with an average body weight of 25 ±2.58 kg. The study employed a randomized block design (RBD) with 3 treatments and 7 replicates. The treatments consisted of PL = diet containing 6% lemuru fish oil, PE = PL + 500 IU vitamin E, PSE = PL + 0.5 ppm selenium. Observed variables included nutrient consumption, hematocrit, erythrocyte count, hemoglobin, MCV, MCHC, leukocyte count, leukocyte differentiation, and neutrophil/lymphocyte ratio. The data were analyzed using Analysis of Variance (ANOVA) and significantly different treatments were further tested with Duncan's test using SPSS 25. The results showed no significant differences (P>0,05) in the count of erythrocytes, leukocytes, and their derivatives, however, there was a significant difference (P<0,05) in the percentage of monocytes in the blood. The conclusion of this study is that supplementation with vitamin E or selenium in diets containing lemuru fish oil can reduce the percentage of monocytes, thereby decreasing inflammation levels in male sheep.
Keyword: Domba Lokal, Hematologi, Selenium, Vitamin E, Lemuru

Judul: Performance and Blood Metabolites of  Local Male Sheep Feed with Containing Lemuru Oil Supplemented with Selenium or Vitamin E
Abstrak: Penelitian ini bertujuan menganalisis performa dan metabolit darah domba lokal jantan yang diberi pakan mengandung minyak lemuru disuplementasi selenium atau vitamin E dan dipelihara pada suhu dan kelembapan tinggi. Ternak yang digunakan pada penelitian ini sebanyak 21 ekor domba jantan lokal dengan bobot badan rata rata ternak 24±2,43 kg dengan umur sekitar 9-12 bulan. Penelitian terdiri dari 3 perlakuan dan 7 kelompok dengan model Rancangan Acak Kelompok (RAK). PL=Ransum perlakuan mengandung 6% minyak lemuru, PE = PL + Vitamin E 500 IU, PSe = PL + Selenium 0,5 ppm. Hasil penelitian menunjukkan bahwa perlakuan memberikan pengaruh tidak nyata (P>0,05) terhadap konsumsi nutrien, glukosa darah, kolesterol darah, dan BCS domba, namun hasil berbeda nyata (P<0,05) terhadap PBBH dan efisiensi pakan. Kesimpulan penelitian ini adalah penggunaan ransum mengandung 6% minyak lemuru dan suplementasi selenium 0,05 ppm (PSe) memberikan hasil lebih tinggi terhadap pertambahan bobot badan harian dan efisiensi pakan. Penggunaan ransum mengandung 6% minyak lemuru (PL), PL + Vitamin E 500 IU (PE) dan PL + Selenium 0,5 ppm (PSe) memberikan hasil yang sama terhadap konsumsi nutrien, BCS, kadar glukosa dan kolesterol darah., This study aimed to analyze the effect of performance and blood metabolites of local male sheep feed with lemuru oil supplemented selenium or vitamin E and maintained at high temperature and humidity. Total 21 local male sheep with an average body weight of 24 ± 2.43 kg aged around 9-12 months. This study consisted of 3 treatments and 7 groups with randomized blok design model. The PL= treatment ration contains 6% lemuru oil, PE= PL + Vitamin E 500 IU, PSe= PL+ Selenium 0.5 ppm. The results showed that the treatment gave gave not significantly results (P>0.05) nutrient consumption blood glucose, blood cholesterol, and BCS of sheep, however, there was a significant results (P<0.05) on average daily gain and feed efficiency. The conclusion is that the use of ration contains 6% lemuru oil and 0.05 ppm selenium supplementation (PSe) provides higher results in average daily gain and feed efficiency. The use of ration contains 6% lemuru oil ( PL), PL + Vitamin E 500 IU ( PE), PL + Selenium 0.5 ppm (PSe) rations gave the same results on nutrient consumption, BCS, blood glucose and cholesterol.
Keyword: Domba Lokal, Minyak Lemuru, Selenium, Vitamin E

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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