某蛋鸡场新城疫与禽流感(h5h9亚型)抗体水平消长规律的研究(附件)【字数:7046】
1
目录
Abstract 1
Keywords 1
引言 1
1 材料与方法 3
1.1 实验材料 3
1.2 免疫程序及接种方法 3
1.3 实验方法 3
1.3.1 检测样品 3
1.3.2 主要试剂及仪器 3
1.4 血凝实验与血凝抑制试验(HA/HI) 4
1.4.1 试验原理 4
1.4.2 HA/HI操作步骤: 4
1.5 检测血清和红细胞悬液的制备 4
2 结果 4
3 讨论 7
致谢 9
参考文献 9
某蛋鸡场新城疫与禽流感(H5、H9亚型)抗体水平消长规律的研究
动物医学专业学生 高寒
指导教师 许家荣
摘要:新城疫和禽流感是目前危害我国养禽业的两大主要传染病,目前预防治疗这两种疾病的主要手段是疫苗防疫和化学药物的辅助治疗。免疫接种具有安全、特异、高效、无残留等优点,在临床上具有良好的防治效果。本实验主要在某鸡场实地取样,用血凝、血凝抑制试验检测并计算抗体效价值,以达到评估免疫效果的目的。ND 与AIH9抗体效价在29日龄前呈下降趋势,29日龄降至最低点后先升高再呈平稳波动,并在开产期来临前稳定在较高效价;AIH5(AIH56、AIH57)抗体效价于21d前呈下降趋势,21d达到最低值后呈稳定升高的趋势。本实验以期为规模化养鸡场免疫程序的制定提供参考。
Research on the Changes of Antibody Titers in Layer Chicken Vaccinated with New Castle Disease and Avian Influenza (H5, H9) Vaccines
Student major in the medicine of veterinary Han Gao
Tutor Jiarong Xu
Abstract:Newcastle disease and Avian influenza are the mai *好棒文|www.hbsrm.com +Q: @351916072@
n epidemic disease in China’s poultry industry. The common method to control them includes vaccination and chemotherapy. Antibody immunization, as a way of passive immunization, has the characteristics of safety, specificity, high efficiency and no residue, and therefore it has good performance in the prevention and treatment of disease. The aim of this study is to evaluate the effect of immunization by sampling and calculating the value of antibody titer with blood coagulation and hemagglutination inhibition test. The result reveals that the titers of ND and AIH9 were both decreased before the 29th day, increased steadily after the lowest point on the 29th day, and finally fluctuated within a reasonable range. Meanwhile, the result illustrated that AIH5(AIH56 and AIH57) were dropping until the 21st day, then increased till reach the protective titer range at last. It provides a theoretical basis for the immune effect evaluation for this chicken farm, and it is of great significance for the production of poultry farming.
Keywords:Newcastle disease;Avian Influenza;blood coagulation and hemagglutination inhibition test
引言
新城疫(Newcastle disease,ND)是由病毒引起的鸡和多种禽类的急性高度接触性传染病,主要特征有呼吸困难、下痢、神经紊乱、黏膜和浆膜出血。新城疫传播迅速,死亡率很高。OIE将其列为A类疫病。主要临床症状有肉髯及鸡冠颜色明显加深、口流酸臭涎、部分伴有神经症状等;大体剖检可见全身粘膜出血、腺胃乳头出血、粘膜水肿、喉部及气管出血坏死等。新城疫病毒属于副黏病毒科(Paramyxoviridae)、副黏病毒亚科(Paramyxovirinae)、禽腮腺炎病毒属(Avulavirus),为有囊膜、不分节段的单股负链RNA病毒[1]。该病严重影响世界各国的养禽业的发展,造成了重大经济损失,基本世界各地区都有对该疫病流行的记录[2]。自1926年首次在印尼的爪哇岛和英国的新城爆发以来,至今已有四次的世界范围内的大流行[3]。但近年来,随着疫苗生产质量、技术环节操作规范的不断提升,及疫苗接种的大范围普及,该病近年来已得到较好控制,典型新城疫已较少发生,但非典型新城疫则呈上升趋势[47],非典型性新城疫的发病特征主要为低发病、低死亡率、产蛋率急剧下降(p<0.01)后短暂回升,软壳蛋[8]明显增多,因为这些临诊症状和其他一些疫病的症状类似,所以难以区分。因此疫苗免疫接种的质量,对非典型新城疫的预防起着决定性的作用。
目录
Abstract 1
Keywords 1
引言 1
1 材料与方法 3
1.1 实验材料 3
1.2 免疫程序及接种方法 3
1.3 实验方法 3
1.3.1 检测样品 3
1.3.2 主要试剂及仪器 3
1.4 血凝实验与血凝抑制试验(HA/HI) 4
1.4.1 试验原理 4
1.4.2 HA/HI操作步骤: 4
1.5 检测血清和红细胞悬液的制备 4
2 结果 4
3 讨论 7
致谢 9
参考文献 9
某蛋鸡场新城疫与禽流感(H5、H9亚型)抗体水平消长规律的研究
动物医学专业学生 高寒
指导教师 许家荣
摘要:新城疫和禽流感是目前危害我国养禽业的两大主要传染病,目前预防治疗这两种疾病的主要手段是疫苗防疫和化学药物的辅助治疗。免疫接种具有安全、特异、高效、无残留等优点,在临床上具有良好的防治效果。本实验主要在某鸡场实地取样,用血凝、血凝抑制试验检测并计算抗体效价值,以达到评估免疫效果的目的。ND 与AIH9抗体效价在29日龄前呈下降趋势,29日龄降至最低点后先升高再呈平稳波动,并在开产期来临前稳定在较高效价;AIH5(AIH56、AIH57)抗体效价于21d前呈下降趋势,21d达到最低值后呈稳定升高的趋势。本实验以期为规模化养鸡场免疫程序的制定提供参考。
Research on the Changes of Antibody Titers in Layer Chicken Vaccinated with New Castle Disease and Avian Influenza (H5, H9) Vaccines
Student major in the medicine of veterinary Han Gao
Tutor Jiarong Xu
Abstract:Newcastle disease and Avian influenza are the mai *好棒文|www.hbsrm.com +Q: @351916072@
n epidemic disease in China’s poultry industry. The common method to control them includes vaccination and chemotherapy. Antibody immunization, as a way of passive immunization, has the characteristics of safety, specificity, high efficiency and no residue, and therefore it has good performance in the prevention and treatment of disease. The aim of this study is to evaluate the effect of immunization by sampling and calculating the value of antibody titer with blood coagulation and hemagglutination inhibition test. The result reveals that the titers of ND and AIH9 were both decreased before the 29th day, increased steadily after the lowest point on the 29th day, and finally fluctuated within a reasonable range. Meanwhile, the result illustrated that AIH5(AIH56 and AIH57) were dropping until the 21st day, then increased till reach the protective titer range at last. It provides a theoretical basis for the immune effect evaluation for this chicken farm, and it is of great significance for the production of poultry farming.
Keywords:Newcastle disease;Avian Influenza;blood coagulation and hemagglutination inhibition test
引言
新城疫(Newcastle disease,ND)是由病毒引起的鸡和多种禽类的急性高度接触性传染病,主要特征有呼吸困难、下痢、神经紊乱、黏膜和浆膜出血。新城疫传播迅速,死亡率很高。OIE将其列为A类疫病。主要临床症状有肉髯及鸡冠颜色明显加深、口流酸臭涎、部分伴有神经症状等;大体剖检可见全身粘膜出血、腺胃乳头出血、粘膜水肿、喉部及气管出血坏死等。新城疫病毒属于副黏病毒科(Paramyxoviridae)、副黏病毒亚科(Paramyxovirinae)、禽腮腺炎病毒属(Avulavirus),为有囊膜、不分节段的单股负链RNA病毒[1]。该病严重影响世界各国的养禽业的发展,造成了重大经济损失,基本世界各地区都有对该疫病流行的记录[2]。自1926年首次在印尼的爪哇岛和英国的新城爆发以来,至今已有四次的世界范围内的大流行[3]。但近年来,随着疫苗生产质量、技术环节操作规范的不断提升,及疫苗接种的大范围普及,该病近年来已得到较好控制,典型新城疫已较少发生,但非典型新城疫则呈上升趋势[47],非典型性新城疫的发病特征主要为低发病、低死亡率、产蛋率急剧下降(p<0.01)后短暂回升,软壳蛋[8]明显增多,因为这些临诊症状和其他一些疫病的症状类似,所以难以区分。因此疫苗免疫接种的质量,对非典型新城疫的预防起着决定性的作用。
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