English to Romanian Medical Livestock / Animal Husbandry veterinar

Live vaccines containing different Eimeria strain combinations are also available and are becoming more regu-larly used, especially in breeder and layer replacements. Most critical for the vaccines is uniform application in all birds in order to establish proper immunity in all birds or the vast majority of the flock. In case initially too many individual birds in a flock escape from proper immunisation, spontaneous recycling of the vaccine coccidia in the susceptible chickens may occur just too late before endemic field coccidiosis emerges