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《Animal Husbandry and Feed Science》 2017年06期
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Monitoring Report of Maternal Antibody of Broiler Avian Influenza Virus H5 Subtype Re-8 Strain

Lv Yanqiu  
【摘要】:[Objective]The paper was to prevent the occurrence of broiler avian influenza virus H5 subtype Re-8 strain effectively in the breeding process of broilers.[Method]The maternal antibodies of broilers in Beijing Baochen Hongwang farm were monitored.According to the disappearance law of maternal antibody,the optimal immune time of broiler avian influenza virus H5 subtype Re-8 strain was determined.[Result]The maternal antibody level of 2-day-old broilers was relatively high,concentrated at 6 log_2-9 log_2,and the antibody positive rate was 100%.The maternal antibody level of 8-day-old broilers concentrated at4 log_2-6 log_2,and the antibody positive rate was 100%.The maternal antibody level of 17-day-old broilers concentrated at 0 log_2-3 log_2,and the antibody positive rate was 0.The average maternal antibody level of 24-37 days old broilers was1 log_2,and the antibody positive rate was 0.[Conclusion]Although the average maternal antibody level of 8-day-old broilers was higher than 5 log_2,20%of chickens was 4 log_2,and maternal antibody could not protect the flock completely.Therefore,the best primary immunization day age of chicks against avian influenza virus was 8-10 days of age.
【作者单位】Animal
【分类号】:S858.31

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