Thyme is a herb with effects on the respiratory system.The aim of the current study was to investigate the effects of thyme essence on trachea, humoral immunity, and the performance of broilers following LaSota vaccination.In this study, 300 Ross 308 broiler chicks were divided into 3 groups of 100 chicken.
The neutral checkered phone case first group received 50 ppm thyme essence 2 days prior to and after LaSota vaccination.In the second group only LaSota vaccine was used, and in the third group B1 vaccine was used to compare its severity to the LaSota vaccine.Finally at the end of production period (42 days) samples were taken from trachea for histopathology and also titer of Newcastle vaccine and the performance of chicks were investigated.
Results polka na xbox of this study showed that thyme essence decreased histopathologic changes due to vaccination reaction in the trachea.Histopathologic alteration was not observed in B1 vaccination group.In view of feed conversion ratio, feed consumption and final body weight in thyme group there was significant improvement in comparison to LaSota group (p.