DETEKSI TITER ANTIBODI VIRUS AVIAN INFLUENZA (AI) SUBTIPE H5N1PADA AYAM KAMARAS ABSTRAK Penelitian ini bertujuan mendeteksi titer antibodi terhadap virus avian influenza (AI) subtipe H5N1 pada ayam KAMARAS yang belum pernah divaksin. Sampel yang digunakan adalah serum dari 30 ekor ayam KAMARAS, masing-masing terdiri dari 15 serum darah ayam KAMARAS jantan dan 15 serum darah ayam KAMARAS betina yang berumur sekitar 3-4 bulan. Penelitian ini dilakukan berdasarkan metode Hirst (1942). Hasil penelitian menunjukkan 30 sampel serum yang diperiksa tidak memiliki titer antibodi terhadap virus avian influenza subtipe H5N1. Dari hasil penelitian dapat disimpulkan bahwa ayam KAMARAS yang dipelihara di Laboratorium Lapangan Peternakan (LLP), Program Studi Peternakan, Fakultas Pertanian, Universitas Syiah Kuala belum pernah terpapar virus avian influenza subtipe H5N1. Hal ini disebabkan karena penerapan biosecurity yang ketat dalam sistem pemeliharaan ayam KAMARAS di Laboratorium Lapangan Peternakan (LLP), Program Studi Peternakan, Fakultas Pertanian, Universitas Syiah Kuala. Detection Antibody Titers of Avian Influenza (AI) Virus Subtype H5N1 on KAMARAS Chicken ABSTRACT This research aimed to detect antibody titers of avian influenza (AI) virus subtypeH5N1 in KAMARAS chickens which have never been vaccinated. Thirty samples serum from 15 females and 15 males KAMARAS chikens were used in this research. The research was performed based on Hirst methode(1942). The result showed that all of 30 samples examined did not contain antibody for Avian Influenza (AI) virus subtype H5N1. It can be concluded that KAMARAS chickens reared in Field Laboratory Animal Husbandry (LLP), Department of Animal Husbandry, Faculty of Agriculture, University of Syiah Kuala has never been exposed to avian influenza virus subtype H5N1.It’s fenomena was affected by the management system of the biosecurity which applied strictly.