A step-by-step procedure for autologous platelet-rich plasma production was developed for topical percutaneous injection in donkeys.This protocol was used in the following publication:Faillace V, Tambella AM, Fratini M, Paggi E, Dini F, Laus F. Use of autologous platelet-rich plasma for a delayed consolidation of a tibial fracture in a young donkey. The Journal of Veterinary Medical Science, 79(3), 2017: 618-622. (ISSN: 0916-7250) (DOI: 10.1292/jvms.16-0400)https://doi.org/10.1292/jvms.16-0400https://www.jstage.jst.go.jp/article/jvms/79/3/79_16-0400/_pdf/-char/en