Judul: Perbaikan performa ayam broiler melalui pemberian metionina sebagai imbuhan pakan
Abstrak: Methionine is a safe, economic, and high quality feed additive. A study on the effect of methionine supplementation on broiler chicken performance was conducted by using 30 broiler chickens. Broiler chickens were assigned into 3 groups: P1 (control, without methionine supplementation), P2 (0.2% methionine supplementation), and P3 (0.4% methionine supplementation). Parameters measured were growth rate, final body weight, feed efficiency (feed convertion ratio/FCR), and mortality rate. The result showed that 0.4% methionine supplementation significantly increased growth rate, final body weight, and feed efficiency (P<0.05). However, growth rate and final weight were not affected by 0.2% methionine supplementation (P≥0.05). Methionine supplementation increased broiler performance between 7-21 days of age and showed no effect after 21 days of age. It was concluded that methionine usage as a feed additive is recommended in broiler chicken with 0.4% of dose, between 7-21 days of age
Keyword: broiler chicken, methionine, FCR, body weight, mortality.

Judul: Performa Ayam Broiler Periode  Starter  dengan  Pemberian Metionin Cair  dalam Air Minum
Abstrak: The objective of this research was to observe the effects of liquid methionine addition (0%; 0.05% and 0.10%) on broiler performance. Three thousand and six hundred DOC (day old chick) strain Cobb were used randomized block design with 3 treatments and 3 blocks. The variables were water consumption, feed consumption, body weight gain and feed conversion. The data were analyzed using Analysis of Variance (ANOVA) and differences among treatments were tested by contrast orthogonal when there was a significant effect of treatment on variables measured. The result showed that liquid methionine did not effect on water consumption, feed consumption, body weight gain and feed conversion ratio of broiler starter period. It was concluded that liquid methionine addition in the drinking water did not affect the amino acid balance in the ration of broiler starter used in this research.
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Judul: Persamaan Korteweg-de Vries Orde Tinggi untuk Menggambarkan Gerak Gelombang Internal
Abstrak: The ocean can be considered of layers of fluid that each layer has a constant density. Internal waves are waves occur in the interface of every'two layers with different density. Because it occures underneath the surface of the ocean, it is invisible. One of internal waves is internal solitary waves. One of formulation that can describe intemal waves movement is KdV equation. KdV equation is derived from governing equations of ideal fluid in Lagrange formulation using asymptotic method. On this thesis, KdV equation is derived in higher order and then its solution is derived by using internal solitary waves assumption. An example of a two-layer fluid is a case will be used. By using Mathematica6 software, for this case will be obtained the coefficients in lower and higher order explicitly and the corresponding between coefficients and relative lower layer depths and fluid depths, the corresponding between coefficients and relative densities, and also observed the different between solitary waves in lower and higher order.
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