%0 Book Section %A Poland, Guy %T Preventive healthcare %B BSAVA Manual of Backyard Poultry Medicine and Surgery %D 2019 %I British Small Animal Veterinary Association %R doi:https://doi.org/10.22233/9781910443194.7 %U https://www.bsavalibrary.com/content/chapter/10.22233/9781910443194.chap7