Traditionally the pilgrims slaughtered the animal themselves, or oversaw the slaughtering. The Roman army was slaughtered and Postumius killed. Later sacrifice became a feast at which oxen were slaughtered. Horses were slaughtered for their meat when needed. Animals are slaughtered by butchers and either shot or bludgeoned. Animals in the city were slaughtered and eaten. Soon the Roman troops were being slaughtered. Approximately 440 million goats are slaughtered each year for meat worldwide. Export for other purposes is permitted on declaration that cattle will not be slaughtered. Livestock were slaughtered at the beginning of winter. Approximately 620 million turkeys are slaughtered each year for meat worldwide. Much of the army was slaughtered or drowned. In 2012, 100 million chickens were slaughtered. Approximately 1.2 billion rabbits are slaughtered each year for meat worldwide. Approximately 5 million horses are slaughtered each year for meat worldwide.