What's the difference between an ordinary bull and a genetically gifted one?
Well, going by the example of one extraordinary beast named Priests Sierra - it is fathering thousands of calves.
The 12-year-old bull has been inducted into the LIC animal hall of fame after contributing to nearly 800 thousand inseminations, resulting in more than 150,000 daughters.
LIC livestock selection manager Simon Worth spoke to Corin Dann.
