Judul: Pengaruh Vaksin Aktif Newcastele Disease-Infectious Bronchitis Terhadap Performance Ayam Pedaging
Abstrak: This research aimed to investigate the performance of broiler chicken vaccinated with the vaccine ND-IB (LaSota H-120). As much as 80 broiler chickens were used in this investigation and were divided into two groups e.i vaccinated and unvaccinated group. Each group consisted of 40 chickens. On day two, the vaccinated group were administrade the ND-IB vaccine (LaSote H-120). On the 14th day, each group were divided into three subgroups. The vaccinated chickens were devided in to 3 groups e.i K1, K2 and K3, whereas the unvaccinated group became group K4, K5 and K6. Groups K1 and K4 were unchallenged groups, whereas group K2 and K5 were challenged with ND virus and group K3 and K6 were challenged with IB virus. Every day, food consumption was measured and the body weight were measured every week. The result of this investigation indicated that the vaccinnation had no effect on weight gain and the vaccination wasn’t optimum in protecting the chickens against ND virus. The food convertion ratio of the vaccinated group of broilers were higher compared to the unvaccinated ones. The IP of vaccinated chickens were unsignificant different with unvaccinated groups.
Keyword: vaccine, LaSota H-120, performance, FCR, broiler chickens

Judul: Studi Kemampuan Vaksin ND-IB Lived: Pembentuk Kekebalan dan Perlindungan terhadap Paparan Virus Newcastle Disease pada Ayam Pedaging
Abstrak: The objective of this study was to measure the antibody titer of broilers were vaccinated with lived ND LaSota-IB H120 vaccine, and to observe the clinical signs and pathological lesions on challenged group. As much as 60 commercial Day Old Chicks were used in the experimental. Twenty chickens were bleed at day one to measure maternal antibody against Newcastle Disease (ND) using Hemaglutination Inhibition (HI) Test. The remaining fourty chickens were divided into four groups. Each group consisted of ten broilers. Group K1 and K2 were unvaccinated. Group K3 and K4 were vaccinated on the 2nd day according to the manufacture procedure. Challenge was carried out on 14th day (12th day post vaccination) to group K1 and K3 with ND Indonesia isolate virus. Blood samples from unvaccinated and vaccinated group were taken on 7th, 14th, and 22nd day. The result showed that chickens had high maternal antibody titer. The combination of intranasal and oral vaccination was able to produced protective antibody against ND viral infection. Vaccination was able to reduced lethargy and petechiae cecal tonsil. The clinical signs and pathological lesions were more severe on unvaccinated group.
Keyword: vaccine, Newcastle Disease, LaSota H-120, HI test, Broiler

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