Judul: Evaluasi Suplementasi Vitamin D3 dalam Pakan terhadap Performa Ayam Petelur Lohmann Brown Umur 91-94 Minggu
Abstrak: Penelitian ini bertujuan mengevaluasi pengaruh suplementasi Vitamin D3-500 produksi Nutricell dalam pakan terhadap performa ayam petelur pada umur 91-94 minggu dengan menggunakan 108 ekor ayam petelur strain Lohmann Brown dengan rataan bobot badan berkisar 1,801-1,840 gram ekor^-1. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) yang terdiri dari 3 perlakuan dan 4 ulangan, setiap ulangan menggunakan 36 ekor ayam dan perlakuan yang digunakan pada penelitian ini adalah: P0= pakan kontrol (tanpa suplementasi Vitamin D3); P1= pakan kontrol + suplementasi Vitamin D3 1,0 gram kg^-1; P2= pakan kontrol + suplementasi Vitamin D3 1,5 gram kg^-1. Peubah yang diukur meliputi konsumsi pakan, hen day production, massa telur, konversi pakan, berat telur, konsumsi Ca dan P, mortalitas, serta Income Over Feed Cost (IOFC). Data dianalisis menggunakan ANOVA (Analysis of Variance). Hasil penelitian menunjukkan bahwa suplementasi Vitamin D3-500 tidak berpengaruh nyata (P>0,05) terhadap keseluruhan peubah yang diukur, namun masih sesuai dengan standar Lohmann Brown umur 91-94 minggu. Kesimpulan pada penelitian ini adalah suplementasi Vitamin D3-500 pada pakan dengan dosis 1,0-1,5 gram kg^-1 tidak berpengaruh pada konsumsi pakan, konversi pakan, hen day production, massa telur, dan berat telur karena tercukupinya Ca dan P dalam pakan kontrol. Nilai IOFC tertinggi yaitu pada perlakuan tanpa suplementasi Vitamin D3., This study aimed to evaluate the effects of Vitamin D3-500 supplementation produced by Nutricell in feed on the performance of laying hens at 91-94 weeks, using 108 Lohmann Brown laying hens with an average body weight 1.801-1.840 grams hens^-1. The study used a Completely Randomized Design (CRD) consisting of 3 treatments and 4 replications, with each replication involving 36 hens. The treatments: P0=control feed (without Vitamin D3 supplementation); P1= control feed + Vitamin D3 supplementation 1.0 gram kg^-1; P2= control feed + Vitamin D3 supplementation 1.5 gram kg^-1. Parameters measured feed consumption, hen day production, egg mass, feed conversion ratio, egg weight, Ca and P consumption, mortality, and Income Over Feed Cost (IOFC). Data were analyzed using Analysis of Variance (ANOVA). The results, supplementation Vitamin D3-500 had not significant effect (P>0.05) on the variables studied, but still met the standards. In conclusion, supplementation of Vitamin D3-500 in feed at dosages of 1.0-1.5 gram kg^-1 did not affect feed consumption, feed conversion ratio, hen day production, egg mass, or egg weight due to sufficient Ca and P in the control feed. IOFC without Vitamin D3 supplementation had a higher profit value.
Keyword: Performance, IOFC, Laying hens, Vitamin D3

Judul: Evaluation of Vitamin D3 Supplementation in Feed on the Physical Quality of Eggs from Lohmann Layer Hens Aged 91-94 Weeks
Abstrak: Penelitian ini bertujuan untuk mengevaluasi efek suplementasi Vitamin D3-500 dalam pakan terhadap kualitas fisik telur dalam upaya mempertahankan kualitas telur ayam petelur Lohmann di umur tua. Penelitian ini menggunakan 108 ekor ayam petelur dengan strain Lohmann Brown umur 91 minggu hingga umur 94 minggu dan rataan bobot badan 1801-1840 g ekor-1. Penelitian ini menggunakan Rancangan Acak Lengkap yang terdiri atas 3 perlakuan dan 4 ulangan serta tiap ulangan menggunakan 9 ekor. P0=Pakan kontrol (tanpa suplementasi Vitamin D3), P1=Pakan kontrol + suplementasi Vitamin D3 1,0 g kg-1, P2=Pakan kontrol + suplementasi Vitamin D3 1,5 g kg-1. Peubah yang diukur meliputi bobot telur, tebal kerabang, warna kuning telur, indeks telur, haugh unit, persentase bobot telur, konsumsi kalsium, dan konsumsi fosfor. Data dianalisis menggunakan ANOVA. Hasil penelitian menunjukkan suplementasi Vitamin D3-500 tidak berpengaruh nyata terhadap bobot telur, tebal kerabang, warna kuning telur, indeks telur, haugh unit, persentase bobot telur, namun kualitas fisik telur masih termasuk dalam standar yang baik. Kesimpulan peneletian ini adalah suplementasi Vitamin D3 sampai dosis 1,5 g kg-1 pakan tidak berpengaruh terhadap kualitas fisik telur, karena kandungan Ca da P dalam ransum serta konsumsinya sudah mencukupi kebutuhan ayam Lohmann umur 91-94 minggu., This study aimed to evaluate the effects of Vitamin D3-500 supplementation in feed on the physical quality of eggs, focusing on maintaining the quality of older Lohmann Brown laying hens. The study involved 108 hens aged 91 to 94 weeks with an average body weight of 1801-1840 g each. It utilized a Completely Randomized Design with 3 treatments and 4 replications, each consisting of 9 hens. The treatments were: P0 = Control diet (no Vitamin D3 supplementation), P1 = Control diet + Vitamin D3 supplementation at 1.0 g kg-1, P2 = Control diet + Vitamin D3 supplementation at 1.5 g kg-1. Variables measured included egg weight, shell thickness, yolk color, egg index, haugh unit, egg weight percentage, calcium consumption, and phosphorus consumption. Data were analyzed using ANOVA. Results indicated that Vitamin D3-500 supplementation did not significantly affect egg weight, shell thickness, yolk color, egg index, Haugh unit, or egg weight percentage. Despite this, the physical quality of the eggs remained within acceptable standards. The conclusion of this study is that supplementing Vitamin D3 up to 1.5 g kg-1 in the diet did not influence egg quality, as the dietary calcium and phosphorus content met the requirements for Lohmann hens aged 91-94 weeks.
Keyword: egg physical quality, Laying hens, Vitamin D3, aged laying hen

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