鸡传染性喉气管炎

1、ILT 由疱疹病毒引起传播: 鸡传鸡机械性污染设备带菌鸡和康复鸡是再复发的源头传染性喉气管炎1临床症状 呼吸困难产蛋下降急性型ILT快速传播, 10-20% 死亡率严重呼吸困难温和型 ILT传播慢, 死亡率低结膜炎, 咳嗽2头部及颈部伸长,口部张开3气管出血4控制方法生物安全免疫紧急接种5英特威BIOTRACH冻干鸡胚源疫苗独特TRI-BIO株可用于饮水, 点眼, 点鼻, 喷雾免疫首免 4-6 周龄二免 12-16 周龄有效, 方便, 免疫反应小6英特威BIOTRACH迅速提供保护力 免疫后7天有坚强保护 产生强而持久保护力可进行紧急接种 可用于早期免疫应激少使用方便 IO/DW/SP安全-没

2、有毒力反强可用于肉鸡 血清转阳快可用作免疫检查产品特点:7 攻毒结果疫苗 鸡(批数) 平均保护率英特威BIO-TRACH 2 93%疫苗A 3 91%疫苗 B 1 86%疫苗 C2 36%疫苗 D 2 35%VX between 2-3 weeks and challenge at 10 DPV, observe 3-4 DPC8攻毒结果 保护鸡数/攻毒鸡数疫苗USDA 病毒野毒英特威BIO-TRACH 7/8 (88%) 8/8 (100%)疫苗A 1/8 (13%) 1/8 (13%)疫苗 B 6/8 (75%) 5/8 (63%)疫苗 C 5/8 (63%) 4/8 (50%) 非免疫对

3、照 0/7 (0%) 1/8 (13%)Vx at 2 weeks and IO challenge at 10 DPV, observer 3-5 DPC92 周龄免疫 免疫后攻毒保护率产品 3 天7 天10天14 天英特威BIO-TRACH 0%30%100% 100%疫苗A 0%80%30% 40%疫苗B 0%30%100% 100%疫苗MLV 0%60%80% 100%对照组 NT0%NT 0%ILT免疫力产生试验-特拉华大学10ILT免疫力产生试验-特拉华大学3 周龄免疫免疫后攻毒保护率产品 3 天7 天10天14 天英特威BIO-TRACH 20% 100% 100% 100%疫苗

4、A 0% 40% 30% 20%疫苗B 20% 100% 80% 100%疫苗 MLV 20% 89% 100% 100%对照组 NT 0% NT 0% 11英特威BIOTRACH喉气管炎疫苗饮水, 点眼, 点鼻, 喷雾首免: 4-6 周龄二免: 12-16 周龄有效方便 免疫反应小ILT免疫程序:12Poultry Respiratory DiseasesJohann BreytenbachInternational Marketing13Poultry Respiratory DiseasesNewcastle DiseaseInfectious Bronchitis DiseaseAvi

5、an PneumovirusInfectious CoryzaMycoplasma gallisepticumOrnithobacterium rhinotrachealeInfectious LaryngotracheitisAvian Influenza14Infectious LaryngotracheitisILT is caused by a herpesvirusTransmission is from bird to bird, or via contaminated equipmentRecovered birds become carriers of the virus an

6、d a potential source of re-infection15Clinical SignsRespiratory distress, gaspingReduction in egg productionAcute ILTRapid spread, 10-20% mortalitySevere respiratory distressMild ILTSlow spread, little or no mortalityConjunctivitis and coughing16Gasping with head extended and beak open17LesionsHaemo

7、rrhagic lesions with free blood in tracheaSloughed tracheal lining and caseous exudate in larynx and trachea Death due to suffocation when caseous plug occludes the larynx or trachea18Haemorrhagic lesions in trachea19ControlDue to the slow spread of the virus strict biosecurity is effective in keeping flocks free of ILTVaccination with mild vaccine by eyedrop is the best preventative measure in endemic areasEmergency vaccination in an infected flock is advisable to stop the spread of the virus20Keeping an eye open for Nobilis ILT21Nobilis ILTA live freeze dried ILT vaccine, embryo propag