Judul: Supplementation of vitamin E and selenium in different diets of IPB D-2 chicken during developer until layer period
Abstrak: Suplementasi vitamin E dan selenium dapat meningkatkan produktivitas ternak. Vitamin E dan selenium berfungsi sebagai antioksidan alami sehingga kombinasi vitamin E dan selenium dapat melindungi jaringan dan menigkatkan sitem imun. Penelitian ini bertujuan untuk mengevaluasi pengaruh suplementasi vitamin E dan selenium pada jenis ransum berbeda untuk ayam IPB D-2 dari umur 15-21 minggu. Rancangan yang digunakan pada penelitian ini adalah Rancangan Acak Lengkap (RAL) faktorial 2 x 2 (faktor A adalah jenis ransum dan faktor B adalah suplementasi vitamin E (100 ppm) dan selenium (1 ppm)) dan lima ulangan. Peubah yang diamati adalah performa, profil darah, organ imunitas, persentase bobot karkas, umur pertama bertelur, dan persentase bobot serta panjang relatif saluran pencernaan. Hasil penelitian menunjukkan tidak ada interaksi antara jenis ransum dan suplementasi vitamin E dan selenium terhadap performa ayam IPB D-2 periode developer dan prelayer. Jenis ransum nyata (P<0,05) meningkatkan konsumsi ransum, konversi ransum pada periode developer dan berpengaruh sangat nyata (P<0,01) meningkatkan konsumsi ransum prelayer, layer dan pertambahan bobot badan pada periode layer. Suplementasi vitamin E dan selenium berpengaruh sangat nyata (P<0,01) menigkatkan konsumsi ransum pada periode prelayer dan pertambahan bobot badan pada periode layer. Terdapat interaksi yang sangat nyata (P<0,01) terhadap konversi ransum periode layer dan interaksi nyata (P<0,05) meningkatkan persentase karkas. Hasil pengamatan H/L profil darah menunjukkan bahwa ayam berada pada level stress sedang. Peubah organ imunitas, produksi telur, dan persentase bobot dan panjang relatif saluran pencernaan tidak dipengaruhi oleh perlakuan. Jenis ransum standar Leeson dan Summers (2005) dengan suplementasi vitamin E (100 ppm) dan selenium (1 ppm) menunjukkan hasil terbaik untuk ayam IPB D-2 dilihat dari nilai konversi ransum dan pertambahan bobot badan., Supplementation of vitamin E and selenium improved the productivity of livestock. Vitamin E and selenium function as natural antioxidants so that the combination of vitamin E and selenium can protect tissues and boost the immune system. This study aims to evaluate the effect of vitamin E and selenium supplementation on different diets for IPB D-2 chickens during 15-21 weeks of age. A Completely randomized factorial 2 x 2 (factor A was diet type and factor B vitamin E (100 ppm) and selenium (1 ppm) supplementation) and five replications was used in this experiment. The variables observed were performance, blood profile, immune organs, percentage of carcass weight, first age of laying eggs and percentage of weight and relative length of the digestive tract. The results showed there was no interaction between the diet type and supplementation on the performance of IPB D-2 chickens in the developer and prelayer periods. The diet type had a significant effect (P<0.05) on increasing feed consumption, feed conversion in the developer period and had a highly significant effect (P<0.01) on increasing prelayer, layer feed consumption and body weight gain in the layer period. Vitamin E and selenium supplementation had a highly significant effect (P<0.01) on increasing feed consumption in the prelayer period and body weight gain in the layer period. There was a highly significant interaction (P<0.01) on increasing the feed conversion ratio of layer period and a significant interaction (P<0.05) on increasing the percentage of the carcass. The results
Keyword: Ayam IPB D-2, Selenium, Vitamin E

Judul: The Effect of Vitamin E and Selenium Supplementation towards the Internal Organ Characteristics of IPB-D2 Chickens during Developer-Layer Period
Abstrak: Penelitian ini bertujuan mengevaluasi pengaruh suplementasi vitamin E dan mineral Se dengan komposisi kebutuhan nutrien yang berbeda terhadap kualitas organ dalam Ayam IPB-D2. Rancangan percobaan yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap (RAL) Faktorial 2 x 2 (faktor A untuk jenis rasum dan faktor B untuk suplementasi vitamin E sebanyak 100 ppm dan jumLah mineral Se 1 ppm, masing-masing perlakuan diulang sebanyak lima kali. Peubah yang diamati yaitu bobot potong unggas, bobot dan persentase organ dalam ayam IPB-D2 (hati, jantung, empedu, limfa, ginjal, rampela, thimus, bursa, pankreas, dan proventikulus). Data diolah menggunakan uji ANOVA. Hasil penelitian menunjukkan tidak terdapat interaksi antara pemberian jenis ransum berbeda dan suplementasi vitamin E dan mineral Se terhadap persentase bobot organ dalam. Jenis ransum berpengaruh sangat nyata pada kenaikan persentase bobot empedu (P<0,01), namun pemberian suplementasi vitamin E dan Se tidak berpengaruh nyata pada kenaikan bobot organ tersebut. Sedangkan jenis ransum serta suplementasi vitamin E dan Se berpengaruh nyata pada persentase bobot proventikulus (P<0,05)., This study aimed to evaluate the effect of vitamin E and mineral Se supplementation with different compositions of nutrient requirements on the internal organ quality of IPB - D2 Chickens. The experimental design used in this study was a 2 x 2 factorial completely randomized design (CRD) (factor A for the type of ransum and factor B for vitamin E supplementation of 100 ppm and the amount of mineral Se 1 ppm. Each treatment was repeated as much as five times. The variables observed were slaughter weight of poultry, weight and percentage of internal organs of IPB-D2 chickens (liver, heart, bile, spleen, kidney, rampella, thymus, bursa, pancreas, and proventiculus). The data is processed using the ANOVA test. The results showed there was no interaction between giving different types of rations and vitamin E and mineral Se supplementation on the percentage of internal organ weights. Type of rations had a very significant effect on increasing bile weight (P<0.01), but vitamin E and Se supplementation did not significantly affect the increase in the percentage weight of the organ. While the type of ration and vitamin E and Se supplementation are significantly affected proventiculus percentage weight (P<0.05).
Keyword: IPB-D2 Chickens, Internal Organ, Selenium, Vitamin E

Judul: Penggunaan Teorema Homeomorphy 2-Manifold dan Teorema Euler Poincare pada Torus 𝑇�� dan Simplicial Complex 𝐾��
Abstrak: Two dimensional topological spaces are said to be homeomorphic if they have the same topological invariant, where one of topological invariant used is an Euler characteristic. Homeomorphy 2-Manifold’s Theorem and Euler Poincare’s Theorem are used to distinguish two topological spaces. Homeomorphy 2-Manifold’s Theorem uses Euler characteristic to identify two dimensional topological spaces. Euler Poincare’s Theorem is an alternative way to find Euler characteristic with Betti number, which is topological invariant as well. The objective of this paper is to investigate the homeomorphism of torus 𝑇����� and simplicial complex 𝐾�����. Topological space torus and simplicial complex 𝐾����� have the same Euler characteristic, which is two. Based on Homeomorphy 2-Manifold’s Theorem topological space torus 𝑇����� and simplicial complex 𝐾����� is homeomorphic.
Keyword: simplicial, torus, Euler, homeomorphism, topology