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Published online by Cambridge University Press: 23 November 2017
Pig breeding companies have been using DNA markers for selection for nearly 15 years, since the introduction of the test for the “Halothane gene”. Other tests have been developed and are used by the industry, although the total number in use was probably less than 100 at the end of 2005. However, large numbers of SNPs have now been identified in the pig and these are being used for relatively high density genome scans (using 1,000s of markers). It is anticipated that significantly more use will be made of DNA markers in the next decade. This paper will provide specific examples of the impact made by markers on the pork chain.