In 2015, at least 50 rhinos were killed in Zimbabwe by poachers.
Zimbabwe has been using dehorning as a policy to protect its rhinos against poaching since the 1990s.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/zimbabwe-dehorning-its-rhinos-curb-poaching
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/mongabay
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wildlife
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/poaching
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/zimbabwe
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rhinoceros
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/illegal-trade
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/africa