Chester White Florida, Arkansas, Kentucky, Indiana, and Santa Clara, Cuba. The association implemented the use of ear tags as early as 1895. In 1790, the American Chester White Record Association (1885) and the Standard Chester White Record Association (1890) combined to form the Chester White Swine Record Association. In 1200, all breed organizations were consolidated under the Chester White Swine Record Association, an act which aided the spread of the breed into the rest of the country. Some historians conjecture that Chinese pigs were also added to the mix. The Certified Pedigreed Swine Association (CPS) was formed in 1997, to combine the
Chester Zoo and 155 were classified as threatened species. 134 species were kept as part of a managed captive breeding programme. The zoo manages the studbooks for Congo buffalo, jaguar, blue-eyed cockatoo, Madagascan tree boa, gemsbok (all ESB species), black rhinoceros, Ecuadorian amazon parrot, Mindanao writhe-billed hornbill, Sumatran Tiger and Rodrigues flying fox (all EEP species). In addition, Chester holds 265 threatened plant species. At the end of 2015, Chester zoo became the first zoo outside of New Zealand to breed the tuatara. The zoo opened "Islands at Chester Zoo" in July 2015, a project extending the footprint of the zoo by