Judul: Live Body Weight Estimation of Garut Sheep Based on Different Linear Body Measurement
Abstrak: Pendugaan bobot badan ternak dengan menggunakan pengukuran tubuh lebih mudah, dan murah bagi peternak rakyat, namun sering terjadi kendala ketidakakuratan dalam memperkirakan bobot hidup ternak. Penelitian ini bertujuan mengkaji bobot hidup domba garut berdasarkan tinggi pundak, panjang badan, dan lingkar dada badan melalui rumus analisis regresi linier. Penelitian ini menggunakan data sekunder dengan jumlah 78 ekor domba garut yaitu 34 ekor jantan dan 44 ekor betina. Hubungan bobot badan dengan ketiga variabel ukuran linier dianalisis menggunakan persamaan regresi linier. Persamaan regresi linier untuk domba jantan muda (I0) dengan ukuran tinggi pundak adalah y=- 55,39+1,3560x, panjang badan y=-48,75+1,3620x, dan lingkar dada adalah y=- 38,52+0,8834x. Selanjutnya, persamaan regresi domba jantan dewasa (I1-I3) dengan ukuran tinggi pundak adalah y=-102,3+2,1450x, panjang badan y=- 63,72+1,7540x, dan lingkar dada y=-75,79+1,4030x. Persamaan regresi linier k domba betina muda (I0) dengan ukuran tinggi pundak adalah y=-13,14+0,5978x, panjang badan y=-10,90+0,6233x, dan lingkar dada adalah y=-1,821+0,3340x. Sedangkan persamaan regresi domba betina dewasa (I1-I3) dengan ukuran tinggi pundak adalah y=-41,35+1,2070x, panjang badan y=-16,30+0,9337x, dan lingkar dada y=-30,85+0,7795x, nilai y sebagai bobot badan (kg) dan nilai x sebagai ukuran linier tubuh domba (cm). Kesimpulan dari penelitian adalah domba garut muda (I0) memiliki koefisien korelasi yang lebih tinggi dibandingkan domba domba garut berumur dewasa (I1-I3)., Estimate the live body weight of livestock using the linier body measurements is easier and cheaper for smallholder breeders, but there are often inaccuracies in estimate live weight of livestock. The aim of this study to estimate the live body weight of garut sheeps based on height at wither, body length, and chest circumference through linier regression analysis formulas. This study use secondary data with a total of 78 garut sheeps, namely 38 males and 44 females. The relationship between body weight and the three linear size variables was analyzed using linear regression. The linear regression equation for young males (I0) on shoulder height is y=-55.39+1.3560x, body length y=-48.75+1.3620x, and chest circumference is y=-38.52+0, 8834x. The linear regression equation for adult males (I1-I3) on shoulder height is y=-102.3+2.1450x, body length y=- 63.72+1.7540x, and chest circumference y=-75.79+1 ,4030x. The linear regression equation for young females (I0) on shoulder height is y=- 13.14+0.5978x, body length y=-10.90+0.6233x, and chest circumference is y=- 1.821+0.3340x. The linear regression equation for adult females (I1-I3) on shoulder height is y=- 41.35+1.2070x, body length y=-16.30+0.9337x, and chest circumference y=-30.85+0 ,7795x, the value of y as body weight (kg) and the value of x as a linear measure of the sheep's body, namely chest circumference (cm).The conclusion in this study is young garut sheeps (I0) had a higher correlation coefficient than the adult (I1-I3) garut sheeps.
Keyword: analysis regression, garut sheeps, linear body measurement, live body weight

Judul: Pendugaan Bobot Badan Domba Rote Berdasarkan Ukuran Linear Tubuh
Abstrak: Bobot badan dapat digunakan sebagai salah satu standar dalam pemilihan bibit maupun bakalan yang unggul. Penelitian bertujuan menduga bobot badan domba rote berdasarkan ukuran linear tubuh berupa tinggi pundak, panjang badan, lebar dada, dan lingkar dada dengan menggunakan regresi linier. Penelitian ini menggunakan data sekunder yang berupa ukuran tinggi pundak, panjang badan, lebar dada, lingkar dada, dan bobot badan pada domba rote berjumlah 44 ekor yang terdiri dari 23 ekor jantan dan 21 ekor betina umur muda (I0) dan dewasa (I1-I3). Hubungan bobot badan dengan keempat variabel ukuran linear dianalisis menggunakan persamaan regresi linear. Hasil peneltian menunjukkan bahwa domba rote berumur muda (I0) memiliki koefisien korelasi antara bobot badan dengan ukuran linier tubuh yang lebih tinggi dibandingkan dengan kelompok umur dewasa (I1-I3). Berdasarkan hasil penelitian ini lingkar dada dapat dijadikan penduga bobot badan yang akurat pada domba rote dengan persamaan y=- 27,50+0,7146x untuk domba jantan muda, y=-21,85+0,7135x untuk domba jantan dewasa, y=-6,224+0,3178x untuk domba betina muda, dan untuk domba betina dewasa, yaitu y=0,757+0,2761x Kata kunci: analisis regresi linier, bobot badan, domba rote, ukuran tubuh linier, Body weight can be used as a standard in selecting superior seeds and progeny. This study examined the estimation of body weight in rote sheep based on linear body measurements such as shoulder height, body length, chest width, and chest circumference using linear regression analysis. This study used secondary data of shoulder height, body length, chest width, chest girth, and body weight of 44 Rote sheep consisting of 23 males and 21 females aged young (I0) and adults (I1-I3). A linear regression equation analyzed the relationship between body weight and the four linear size variables. The results showed that young rote sheep (I0) had a higher correlation coefficient between body weight and linear body size than the adult age group (I1-I3). Based on the results of this study, chest circumference can be used as an estimate of body weight in Rote sheep with the equation y=- 27,50+0,7146x for ram lamb, y=-21,85+0,7135x for the ram, y=-6,224+0,3178x for ewe lamb, and y=0,757+0,2761x for ewe. Keywords: body weight, linear body size, linear regression analysis, rote sheep
Keyword: analisis regresi linier, bobot badan, domba rote, ukuran tubuh linier

Judul: Sintesis Flavon dari Fenol dan Benzoil Klorida
Abstrak: Flavone is a class of flavonoid, commonly found in plants with wide bioactivity spectrum. A widely used flavone synthesis route is through acidcatalyzed oxidative cyclization of β-diketone. In this study, unsubstituted flavone had been synthesized via 5-step from phenol, with 22% yield and successfully increased the yield of previous study on Fries rearrangement of phenyl acetate and benzoylation of o-HAP steps. Phenol was acetylated resulting 93% phenyl acetate. AlCl3-catalyzed Fries rearrangement in 1.5 hour and at 120 °C converted phenyl acetate into o-hydroxyacetophenone (o-HAP) with 40% yield. AlCl3 as catalyst produced o-HAP with higher and reproducible yield compared with BF3·Et2O and ZnCl2. Benzoylation of o-HAP followed by Baker-Venkataraman rearrangement of the ester product using KOH in dried pyridine produced β-diketone 1-(2- hydroxyphenyl)-3-phenylpropane-1,3-dione. The yield of ester and β-diketone were 71% and 85%, respectively. Finally, oxidative cyclization of β-diketone with sulphuric acid as catalyst produced 99% of flavone. The flavone product had been characterized spectroscopically and its melting point as well.
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