Judul: Percentage of Carcass Weight and Commercial Cuttings of Third Generation IPB-D2 Male Candidate Breeds Aged 10 to 12 Weeks
Abstrak: Ayam IPB-D1 merupakan rumpun ayam lokal baru yang berhasil dikembangkan oleh Institut Pertanian Bogor. Dilakukan seleksi ayam IPB-D1 berdasarkan konsentrasi IgY dan titer antibodi ND untuk mendapatkan ayam kandidat galur IPB-D2. Penelitian ini bertujuan mengkaji persentase bobot karkas dan potongan komersial ayam jantan kandidat galur IPB-D2 G3. Ayam yang digunakan berjumlah 24 ekor ayam jantan kandidat galur IPB-D2. Peubah yang diamati adalah persentase bobot karkas dan potongan komersial. Data yang diperoleh dianalisis dengan uji deskriptif dan di uji t dengan ayam jantan kandidat galur IPB-D3 G1 dan ayam jantan IPB-D1 Sukabumi. Hasil penelitian menunjukkan persentase karkas ayam jantan kandidat galur IPB-D2 G3 meningkat. Ayam jantan kandidat galur IPB-D2 G3 memiliki bobot serta persentase karkas dan potongan komersial lebih tinggi dibandingkan dengan ayam jantan IPB-D1 Sukabumi. Ayam jantan kandidat galur IPB-D2 G3 memiliki kualitas karkas yang baik., IPB-D1 chicken is a new local chicken breed successfully developed by Bogor Agricultural University. IPB-D1 chickens were selected based on IgY concentration and ND antibody titer to obtain IPB-D2 candidate strains. This study aimed to assess the percentage of carcass weight and commercial cuts of IPB-D2 G3 candidate roosters. The chickens used amounted to 24 roosters of IPB D2 candidate strains. The observed variables were the percentage of carcass weight and commercial cuts. The data obtained were analyzed by descriptive test and t-test with IPB-D3 G1 and IPB-D1 Sukabumi candidate roosters. The results showed that the carcass percentage of IPB-D2 G3 candidate roosters increased. IPB-D2 G3 candidate roosters had higher carcass weight and percentage and commercial cuts compared to IPB-D1 Sukabumi roosters. IPB-D2 G3 candidate roosters had good carcass quality.
Keyword: ayam IPB-D2, bobot karkas, potongan komersial

Judul: Comparison of Non-Carcass Weight Percentage between IPB-D2 and IPB-D3 Chickens at Different Slaughter Age
Abstrak: Ayam lokal Indonesia merupakan komoditas yang banyak dipelihara oleh masyarakat untuk memenuhi kebutuhan ekonomi dan sumber protein hewani namun memiliki produktivitas yang sangat rendah. Ayam IPB-D1 merupakan rumpun baru ayam lokal yang telah dilakukan upaya peningkatan mutu genetik. Ayam IPB-D2 dan IPB-D3 yang merupakan keturunan ayam IPB-D1 yang diseleksi dengan tujuan menjadi calon galur baru dengan tingkat ketahanan tubuh yang baik serta pertumbuhan bobot badan yang cepat. Tujuan dari penelitian ini adalah menilai persentase bobot non karkas ayam jantan IPB-D2 dan IPB-D3 pada umur potong berbeda. Ayam yang digunakan adalah 100 ekor DOC IPB-D2 G3 dan 100 ekor DOC IPB-D3 G1. Penelitian dilakukan pada bulan September hingga Desember 2021 di Laboratorium Lapangan Pemuliaan dan Genetika Ternak, Fakultas Peternakan, Institut Pertanian Bogor. Peubah yang diamati adalah bobot kepala, ceker, usus total, hati, rempela, jantung, dan ginjal. Data yang diperoleh dianalisis dengan uji deskriptif dan uji t. Persentase bobot non karkas tertinggi ayam IPB-D2 G3 terdapat pada umur 12 minggu (24,26%) dan ayam IPB-D3 G1 pada umur11 minggu (25,78%)., Indonesian local chicken is the most widely kept by the community because it can meet the economic needs and source of animal protein but with very low productivity. IPB-D1 chickens are a new family of local chickens that have improved genetic quality. IPB-D2 and IPB-D3 chickens are descendants of IPB-D1 chickens that are selected to become candidates for new strains with a good level of body resistance and rapid bodyweight growth. This study purposes to assess the percentage of the non-carcass weight of IPB-D2 and IPB-D3 chickens at different slaughter ages. The chickens used were 100 DOC IPB-D2 G3 and 100 DOC IPB-D3 G1. The research was conducted from September to December 2021 at the Laboratory of Animal Breeding and Genetics Field, Faculty of Animal Husbandry, Bogor Agricultural University. The observed variables were head weight, claws, total intestine, liver, gizzard, heart, and kidney. The data obtained were analyzed by descriptive test and t-test. The highest percentage of the non-carcass weight of IPB-D2 G3 chickens was found at 12 weeks of age (24,26%) and IPB-D3 G1 chickens at 11 weeks of age (25,78%).
Keyword: IPB-D2 line chicken, IPB-D3 line chicken, non carcass weight

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