Abstract
The aim of this research was to determine the antibody titer results for laying hens Avian Influeza (AI) and CV (Coefficient of variance) in open and close houses. This research took place at the Bukit Limestone laying hens farm which is located in Talun, Blitar Regency, East Java. The sample of this study was randomly selected from each cage with the number of each cage being 30 test samples. Blood samples were taken through the brachial vein which is located on the inside of the chicken wing. Titer examination was carried out using the HI test (Hemagglutation inhibition) serological test method at the serological test laboratory of PT Akurat Diagnostik Indonesia. Based on this comparative descriptive research, the method used to analyze the data is the Mann-Whitney test and using SPSS. In closed house cages, the average AI antibody titer is 24.03 while in open house cages, the average AI antibody titer is 25.30. Chickens with an average antibody titer of > 24 were classified as protective against Avian Influenza. The test results showed no significant difference in AI antibody titers in closed house and open house cages.
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