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
Deaf animal Deaf animal Some strains of animals, such as white cats, have a tendency to congenital deafness. It is also not an uncommon problem for purebred dogs. Some known chemicals and elements can also affect deafness in animals. Deafness can occur in almost any breed of cat or dog. This includes both pure-breed and mixed-breed animals although there may be more prevalence in some specific breeds. "The association between patterns of pigmentation and deafness in the dog has a long-documented history, with reports dating back over one hundred years. Long suspected of having a genetic basis, the search for loci with