Application of flavonoid extract of scutellaria baicalensis in inhibition of duck-origin chicken bacilli

The invention belongs to the technical field of poultry breeding, and particularly discloses application of a scutellaria baicalensis flavonoid extract to inhibition of duck-origin chicken bacilli. An in-vitro bacteriostatic test proves that the flavonoid extract of scutellaria baicalensis has a good bacteriostatic effect on duck-origin chicken bacilli in a concentration range of 1-100mg/mL in vitro. Clinical tests prove that the stems and leaves of scutellaria baicalensis and the roots of scutellaria baicalensis can improve the respiratory tract symptoms of the diseased laying hens, recover the production level of the laying hens and reduce the level of lung inflammatory cells. 本发明属于家禽养殖技术领域，具体公开一种黄芩黄酮类提取物在抑制鸭源鸡杆菌中的用途。经体外抑菌试验证明，黄芩黄酮类提取物在体外对鸭源鸡杆菌在1～100mg/mL浓度范围内有良好的抑菌效果。经临床试验证明，黄芩茎叶及黄芩根均可以改善患病蛋鸡的呼吸道症状，恢复蛋鸡生产水平，减低肺部炎性细胞水平。