Judul: Respon penambahan di-metionin pada ransum mengandung aflatoksin terhadap performa ayam broiler
Abstrak: Aflatoxin is a secondary metabolite from Aspergillus flavus and A. parasiticus that grow on different types of feedstuffs, especially in corn. The addition of methionine in the diet increased the growth, repaired body tissue and increased body resistance against disease and toxic from aflatoxin at a certain level. The experiment was arranged with factorial completely randomized design with four replications, factor A was the level of DL-methionine (0%, 0.25% and 0.35% for starter; 0%, 0.20% and 0.30% for finisher) and factor B was the level of aflatoksin (0 ppb and 150 ppb). Variables measured were water and feed intake, body weight gain, feed conversion, and mortality. The results showed that water and feed intake, and body weight gain increased for finisher broiler fed diet added with DL-methionine. Addition of 0.20% and 0.30% DL-methionine in the diet containing 150 ppb aflatoxin increased water intake. Feed intake and weight gain were also higher for broiler fed diets added with 0.20% DL-methionine. There were no interaction between aflatoxin and addition of DL-methionine on the measured variables. It is concluded that addition of DLmethionine in rations containing aflatoxin affected performance of broiler in finisher period.
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Judul: Profil darah ayam broiler yang diberi ransum mengandung aflatoksin dengan penambahan metionin
Abstrak: Tropical climate inIndonesia have high temperature and humidity that supports the growth of fungi. It causes one of the common feed problem in Indonesia, in example fungal contaminations. Fungi produces a toxin that will give a harmfull effect for the livestock. Aflatoxin is a mycotoxin that produces by Aspergillus flavus and Aspergillus parasiticus. It makes a health problem to livestock. The effects of aflatoxin that found on farm animal such as a variation in organ’s weight and the decrease of some hematology parameters. The use of additives and supplements in diets were developed in order to minimize the effects of aflatoxin. The aim of this research was to evaluate the effect of methionine addition in diet that contaminated with aflatoxin on blood profile and IgY (immunoglobulin Y) of broiler. The experiment was arrange with factorial completely randomized design with three level of methionine (0%, 0.25%, and 0.35% for starter; 0%, 0.20%, and 0.30% for finisher), three level of aflatoxin (0 ppb, 150 ppb and 300 ppb) and four replicates. Parameters that measured were hemoglobin, hematocrit, erythrocyte, leucocyte, leucocyte differentiation and IgY. The result of this research was showed an interaction, segnificant difference and no significant difference. In starter period, there are interaction effects on erythrocytes and IgY, while leukocytes was influenced by the level of methionine and heterophils was influenced by the level of aflatoxin. For finisher period, only leucocyte that has a different value due to aflatoxin’s level.
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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