METHOD TO SPORULATE COCCIDIAL OOCYSTS PURIFIED FROM ANIMAL FAECES, SPORULATED OOCYSTS OBTAINED WITH THIS METHOD AND A VACCINE CONTAINING THESE SPORULATED OOCYSTS

摘要

The invention pertains to a method to sporulate coccidial oocysts purified from animal faeces (5), the method comprising providing the purified oocysts as a layer (40) on a supporting surface (22), maintaining the layer at least intermittently in an oxygen containing gaseous environment (60) having a relative humidity of at least 15% and maintaining the temperature of the oocysts between 19°C and 37°C. The invention also pertains to sporulated oocysts obtained with this method and to a vaccine containing such sporulated oocysts.