토종닭 종계의 난계대 전염병 항체 양성률 분석
Analysis of antibody titer of transovarian transmitted diseases in Korean native breeder chickens
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초록
This study was carried out to identify the occurrence of transovarian transmitted diseases and antibody positive rates among Korean native breeder chickens. The infection rates with Salmonella pullorum and Salmonella gallinarum among 16-week-old, 36-week-old, and 56-week-old breeder chickens and the antibody positive rates to Egg Drop Syndrome '76, Mycoplasma gallisepticum and Mycoplasma synoviae among 16-week-old, 18-week-old, and 56-week-old breeder chickens were identified, and the antibody positive rates to seven major transovarian transmitted diseases among 1-day-old chicks were investigated. As a result, no infection with Salmonella pullorum and Salmonella gallinarum was found among the investigated subjects of all ages. Vaccinated breeder chickens showed the 100% antibody positive rate to Egg Drop Syndrome '76, and unvaccinated breeder chickens showed the 100% antibody negative rate to Mycoplasma gallisepticum and Mycoplasma synoviae, confirming that there was no infection with Mycoplasma gallisepticum and Mycoplasma synoviae. As a result of the antibody tests of the 1-day-old chicks for transovarian transmitted diseases, it was found that vaccinated chicks showed good antibody positive rates to avian encephalomyelitis, chicken infectious anemia, and avian reovirus, confirming that they had power of defense against the relevant infectious diseases, and that unvaccinated chicks showed the 100% antibody negative rates to avian leukosis, chicken reticuloendotheliosis, and Mycoplasma synoviae, confirming that there was no infection with the relevant diseases. Given that the results of this study showed that among the transovarian transmitted diseases of chickens, there was no history of infection with diseases against which vaccination was not administered and high antibody positive rates were found with diseases against which vaccination was administered, it is judged that chickens with good power of defense against diseases were bred, and it is deemed that constant monitoring and vaccination against transovarian transmitted diseases will be necessary for the control and prevention of the diseases.
Abstract
This study was carried out to identify the occurrence of transovarian transmitted diseases and antibody positive rates among Korean native breeder chickens. The infection rates with Salmonella pullorum and Salmonella gallinarum among 16-week-old, 36-week-old, and 56-week-old breeder chickens and the antibody positive rates to Egg Drop Syndrome '76, Mycoplasma gallisepticum and Mycoplasma synoviae among 16-week-old, 18-week-old, and 56-week-old breeder chickens were identified, and the antibody positive rates to seven major transovarian transmitted diseases among 1-day-old chicks were investigated. As a result, no infection with Salmonella pullorum and Salmonella gallinarum was found among the investigated subjects of all ages. Vaccinated breeder chickens showed the 100% antibody positive rate to Egg Drop Syndrome '76, and unvaccinated breeder chickens showed the 100% antibody negative rate to Mycoplasma gallisepticum and Mycoplasma synoviae, confirming that there was no infection with Mycoplasma gallisepticum and Mycoplasma synoviae. As a result of the antibody tests of the 1-day-old chicks for transovarian transmitted diseases, it was found that vaccinated chicks showed good antibody positive rates to avian encephalomyelitis, chicken infectious anemia, and avian reovirus, confirming that they had power of defense against the relevant infectious diseases, and that unvaccinated chicks showed the 100% antibody negative rates to avian leukosis, chicken reticuloendotheliosis, and Mycoplasma synoviae, confirming that there was no infection with the relevant diseases. Given that the results of this study showed that among the transovarian transmitted diseases of chickens, there was no history of infection with diseases against which vaccination was not administered and high antibody positive rates were found with diseases against which vaccination was administered, it is judged that chickens with good power of defense against diseases were bred, and it is deemed that constant monitoring and vaccination against transovarian transmitted diseases will be necessary for the control and prevention of the diseases.
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