A poster presentation for the coming World Veterinary Poultry Association [WVPA] Congress in September 2017, on this topic, has just been published.... "Treatment of Egg Apex Abnormalities (EAA) caused by Mycoplasma Synoviae, with Denagard and Tylan in the Field" Mycoplasma synoviae infection causes disease in layers and breeders with egg malformation due to microorganisms colonising the chicken’s reproductive tract and producing an increase in brittle and cracked eggshells downgrades - a source of significant financial loss!