Judul: Organic Mineral Mixed Suplementation in Feed on Isa Brown Laying Hens Performance and Quality 90-97 Weeks
Abstrak: Penelitian ini bertujuan mengevaluasi suplementasi campuran mineral organik dalam pakan pada ayam petelur . Penelitian menggunakan 1444 ekor ayam. Penelitian ini menggunakan rancangan acak lengkap (RAL) dengan 2 perlakuan dan 11 ulangan. Perlakuan yang digunakan adalah T0 = pakan komersial, dan T1 = pakan komersil + campuran mineral organik. Parameter yang diamati terdiri dari warna kerabang, kekuatan kerabang, ketebalan kerabang, haugh unit, hen day production, konsumsi pakan, bobot telur, dan konversi pakan. Data dianalisis menggunakan uji T. Hasil penelitian berpengaruh nyata meningkatkan hen day production, konversi pakan, konsumsi pakan, warna kerabang, ketebalan kerabang, dan kekuatan kerabang (P <0,05), namun tidak berpengaruh pada bobot telur dan haugh unit (P >0,05). Penerapan suplementasi campuran mineral organik dapat meningkatkan hen day production, konsumsi pakan, konversi pakan, kekuatan kerabang, warna, ketebalan kerabang telur ayam petelur strain Isa Brown, namun belum mampu meningkatkan haugh unit dan bobot telur., This study was aimed to evaluate supplementation of organic mineral mix in feed for Isa Brown hens. The study used 1444 chickens. This study used a completely randomized design (RAL) with 2 treatments and 11 replications. The treatments used were T0 = commercial feed and T1 = commercial feed + organic mineral mixture. Parameters observed consisted of shell color, shell strength, shell thickness, haugh unit, hen day production, feed consumption, egg weight, and feed conversion. Data were analyzed using T test. The results showed that significantly improved hen day production, feed conversion, feed consumption, shell color, shell thickness, and shell strength (P <0,05), but had no effect on egg weight and haugh unit (P >0,05). The application of organic mineral mixture supplementation can increase hen day production, feed consumption, feed conversion, shell strength, color, egg shell thickness of laying hens strain Isa Brown, but has not been able to increase the haugh unit and egg weight.
Keyword: Laying hens final phase of production, Performance

Judul: Production of Supplementary Wafers with Different Levels of Molasses and the Effect on the Performance of Laying Hens 24-31 Weeks Old
Abstrak: Penelitian ini bertujuan mengevaluasi kualitas fisik wafer suplemen dengan level molases yang berbeda dan mengetahui pengaruhnya terhadap performa ayam Isa Brown yang diberi wafer suplemen. Penelitian ini menggunakan 64 ekor ayam petelur (umur 24-31 minggu). Penelitian dibagi menjadi dua tahap. Tahap 1 adalah pembuatan wafer suplemen dengan level molases yang berbeda. Data diuji dengan ANOVA. Peubah yang diukur adalah aktivitas air (Aw), berat jenis (BJ), kadar air (KA), kelarutan total (KT), dan Wafer Durability Index (WDI). Hasil penelitian menunjukkan bahwa level molases yang berbeda berpengaruh nyata (P<0,05) terhadap BJ, KA, KT dan WDI tetapi tidak berpengaruh nyata (P>0,05) terhadap Aw. Tahap 2 adalah pemberian wafer suplemen pada ayam Isa Brown. Data diuji dengan uji T. Peubah yang diamati adalah konsumsi pakan, konsumsi air minum, Hen Day Production (HDP), bobot telur, massa telur, Feed Conversion Ratio (FCR), dan mortalitas. Pemberian wafer suplemen terbaik tidak berpengaruh nyata (P>0,05) terhadap konsumsi pakan, konsumsi air minum, HDP, bobot telur, massa telur, FCR, dan mortalitas., The research aimed to evaluate the physical quality of supplement wafers with the different levels of molasses and to measure the performance of Isa Brown chickens that given supplement wafer. This study used 64 laying hens (24-31 weeks old). This study was divided into 2 steps. Step 1 was supplement wafer production with different levels of molasses. Data was tested by ANOVA. Parameters measured were water activity (Aw), density, water content (KA), total solubility, and Wafer Durability Index (WDI). The results showed that molasses had a significant effect (P<0.05) on bulk density, water content, total solubility, and WDI but had no significant effect (P>0.05) on Aw. Step 2 was given supplement wafer to Isa Brown chickens. Data was tested by T-test. Parameters measured were feed consumption, drinking water consumption, Hen Day Production (HDP), egg weight, egg mass, Feed Conversion Ratio (FCR), and mortality. Adding the best supplement wafers had no significant effect (P>0.05) on egg weight, egg mass, feed consumption, drinking water consumption, FCR, HDP, and mortality.
Keyword: Ayam Isa Brown, kualitas fisik, performa, wafer suplemen

Judul: Approximation of the Median of Poisson Distribution Using the Relation of Poisson-Gamma Distribution
Abstrak: A major drawback of median is that median cannot usually be defined in closed form, even in the cases where their distribution functions are known. This study gives an approximation of the closed form for the median of the Poisson distribution by using the relation of Poisson-Gamma distribution. The approximation uses elementary techniques based on the monotonicity of certain sequences involving tail probabilities of the Poisson distribution and the Central Limit Theorem. Furthermore, a closed form expression for the mean absolute deviation 􀜧|􀜰􀰒 􀵆 􀜯􀝁􀝀􁈺􀜰􀰒􁈻| is also studied. The median is relevant because of the fact that it minimizes the mean absolute deviation of a Poisson random variable (􀜰􀰒􁈻 by considering median as central tendency.
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