鸡传染性喉气管炎.pptx

传染性喉气管炎? 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，免疫反应小英特威BIOTRACH '愴产品特点:应激少使用方便IO/DW/SP 安全-没有毒力反强 可用于肉鸡 血清转阳快9可用作免疫检查迅速提供保护力 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7攻毒结果 4緣疫苗 鸡（批数） 平均保护率英特威 BIO-TRACH? 2 93%疫苗A3 91%疫苗B1 86%疫苗C2 36%疫苗D2 35%VX between 2-3 weeks and challenge at 10 DPV, observe 3-4 DPC8攻毒结果赂嫖保护鸡数/攻毒鸡数疫苗USDA病毒野毒英特威BIO-TRACH?7/8 (88%)8/8 (100%)1/8 (13%)5/8 (63%)4/8 (50%)1/8 (13%)疫苗A疫苗B疫苗C非免疫对照1/8 (13%)6/8 (75%)5/8 (63%)0/7 (0%)9Vx at 2 weeks and IO challenge at 10 DPV, observer 3-5 DPCILT免疫力产生试验-特拉华大学2周龄免疫免疫后攻毒保护率产口口3天7天10天14天英特威 BIO-TRACH?0% 30% 100% 100%疫苗A0% 80% 30% 40%疫苗B0% 30% 100% 100%疫苗MLV0% 60% 80% 100%对照组NT 0% NT 0%10ilt免疫力产生试验-特拉华大寧q3周龄免疫 免疫后攻毒保护率产口口3^7天10天14天英特威 BIO-TRACH?20%100%100%100%疫苗A0%40%30%20%疫苗B20%100%80%100%疫苗MLV20%89%100%100%对照组NT0%NT0%11英特威BIOTRACH喉气管炎疫首:籠ILT免疫程序：-饮水，点眼，点鼻，喷雾?首免:4-6周龄?二免：12-16周龄⑥有效⑥方便?免疫反应小12Poultry RespiratoryDiseasesJohann BreytenbachInternational Marketing13Poultry Respiratory DiseasesNewcastle DiseaseInfectious Bronchitis DiseaseAvian PneumovirusInfectious CoryzaMycoplasma gallisepticum Ornithobacterium rhinotrachealeInfectious LaryngotracheitisAvian InfluenzaInfectious Laryngotracheitis? ILT is caused by a herpesvirus? Transmission is from bird to bird, or via contaminated equipment? Recovered birds become carriers of the virus and a potential source of re-infection15Clinical Signs? Respiratory distress, gasping? Reduction in egg production? Acute ILT-Rapid spread, 10-20% mortality一 Severe respiratory distress? Mild ILT- Slow spread, little or no mortality一 Conjunctivitis and coughingGasping with head extended and beak o17Lesions? Haemorrhagic lesions with free blood in trachea? Sloughed tracheal lining and caseous exudate in larynx and trachea? Death due to suffocation when caseous plug occludes the larynx or tra