Rezvan Kiani

thank you all for your comments it was very useful to me and i want to add also from our experience that double shoot vaccination procedure was also helpful to eliminate this problem and also calibration of the vaccinator pressure and control the vaccination time to the optimum is also has an observed results. thanks again

marek outbeak, in m experience usually corelated with high chalenge in early rearing periode and together with poor management of brooding. same case usually found poor storage of vaccine, vaccine not completly deep in liquid nitrogen. double injected vaccine at hatchery is recommended for very hihg chalenge area and farm with very poor biosecurity, in order to avoid miss dose due to miss injected ...