Nilawati Widjaya et al./Animal Production. 25 (2): 118-122, 2023 Accredited by Kemendikbudristek Dirjendiktiristek No 225/E/KPT/2022. E-ISSN 2541-5875 118 The Effect of Closed House Density Near the Outlet on the Production of Carcass, Non-carcass, and Abdominal Fat of Finisher Broilers Nilawati Widjaya 1 , Wasito 1 *, Sari Suryanah 1 , Tedi Akhdiat 1 , Hilman Permana 1 , Ucop Haroen 2 , and Susi Dwi Widyawati 3 1 Animal Husbandry Study Program, Faculty of Agriculture, Insan Cendekia Mandiri University, Bandung, Indonesia 2 Faculty of Animal Husbandry, Jambi University, Jambi, Indonesia 3 Departement of Animal Husbandry, Faculty of Agriculture, Sebelas Maret University, Surakarta, Indonesia *Corresponding author email: sa.wasito@gmail.com Abstract. The purpose of this study was to investigate the closed house cage density near the outlet that affected the production of carcass, non-carcass, and abdominal fat of finisher phase broilers and to ascertain the number of closed house cage density that could produce the ideal amount of carcass, non-carcass, and low abdominal fat. The experiment employed a completely randomized design with four treatments: T0 (10 birds per square meter), T1 (12 birds per square meter), T2 (14 birds per square meter), and T3 (16 birds per square meter). It was replicated five times using different number of broilers in each replication depending on the cage density. The observed variables were live weight, carcass weight, percentage of carcass, percentage of non-carcass, and percentage of abdominal fat. Data were subjected to analysis of variance and further tested with Duncan's multiple-range test. The study was carried out for 35 days at Farm H. Noto Miharjo in Adiwarno Village, Buayan District, Kebumen Regency, Central Java. The research results showed that the live weight, carcass weight, and carcass percentage were significantly impacted by closed house cage density at the area near the outlet, although non-carcass percentage and abdominal fat were not significantly impacted. A closed house cage density of 12 birds per square meter at the area near the outlet can provide an optimal production of carcass, non-carcass, and abdominal fat. Keywords: Closed house, outlet, broilers, carcass, non-carcass, abdominal fat Abstrak. Penelitian ini bertujuan untuk mengetahui pengaruh kepadatan kandang closed house pada zona dekat outlet terhadap produksi karkas, non karkas, dan lemak abdominal broiler fase finisher serta mengetahui berapa jumlah kepadatan kandang closed house pada zona dekat outlet yang mampu menghasilkan produksi karkas dan non karkas optimal serta lemak abdominal yang rendah. Rancangan yang digunakan adalah Rancangan Acak Lengkap, terdiri atas empat perlakuan yaitu T0 (kepadatan kandang 10 ekor per m 2 ), T1 (kepadatan kandang 12 ekor per m 2 ), T2 (kepadatan kandang 14 ekor per m 2 ), dan T3 (kepadatan kandang 16 ekor per m 2 ). Setiap perlakuan diulang sebanyak lima kali, dan setiap ulangan terdiri atas jumlah boiler yang berbeda sesuai kepadatan kandang yang digunakan. Peubah yang diamati yaitu bobot hidup, bobot karkas, persentase karkas, persentase non karkas, dan persentase lemak abdominal. Data dianalisis dengan sidik ragam, dan diuji lanjut dengan uji wilayah berganda Duncan. Penelitian dilaksanakan selama 35 hari di Farm H. Noto Miharjo yang berlokasi di Desa Adiwarno, Kecamatan Buayan, Kabupaten Kebumen, Jawa Tengah. Hasil penelitian menunjukkan bahwa kepadatan kandang closed house pada zona dekat outlet berpengaruh nyata terhadap bobot hidup, bobot karkas, dan persentase karkas, namun berpengaruh tidak nyata terhadap persentase non karkas dan lemak abdominal. Kepadatan kandang closed house pada zona dekat outlet sebanyak 12 ekor per m 2 dapat menghasilkan produksi karkas, non karkas, dan lemak abdominal yang optimal. Kata kunci: Closed house, outlet, broiler, karkas, non karkas, lemak abdominal Introduction At the dawn of Indonesia's economic recovery in 2021 and the increasing public revenue, the need for broiler meat and all materials related to the poultry sector seem to grow. This increasing demand for broiler products boosts poultry development, particularly broiler farming. The maintenance interval for broilers is 35 days; therefore, starting a business in the broiler maintenance sector is an appealing, prospective option. Broiler livestock business generally has two housing systems: open-house system and