Identification of Newcastle Disease case on Kampung Unggul Balitbangtan (KUB) and Sentul Terseleksi (SenSi) chicken in Ungaran Research and Assessment Installation for Agricultural Technology

Abstract

Newcastle Disease (ND) is a common avian disease that attacks native chickens by causing respiratory problems, thereby leading to a high mortality rate of about 60% per year and economic losses in Indonesia. This study aims to determine the prevalence of ND in Kampung Unggul Balitbangtan (KUB) and Sentul Terseleksi (SenSi) chickens which was conducted from March to June 2021, on their cages at the Ungaran Research and Assessment Installation for Agricultural Technology. The total number of 20 serum KUB and SenSi chicken samples were collected, with 25% KUb A cages, 50% KUB B cages, and 25% SenSi cages. Each chicken’s serum was analyzed for inhibition of hemagglutination (HI) to determine antibody titers against ND. The average antibody titer is expressed as a log2 value. The HI test results indicated that the KUB A cage, KUB B cage, and SenSi cage all contained positive ND antibodies. In the KUB A, KUB B, and the SenSi cages, the average ND antibody titer are 2 log 2, 0.8 log 2, and 2 log 2 respectively. In conclusion, the prevalence of ND antibodies is 100% in KUB and SenSi hens. The ND infection was not described in all chicken cages because the prior vaccine provided a limited level of protection.