Study area
Nigeria is bordered by Benin Republic, Niger Republic, Chad, Cameroon, and the Atlantic Ocean to the southern part. Nigeria’s porous international borders with neighbouring countries make trans-border trading easy with free movement of livestock in both directions. Administratively, Nigeria is divided into 36 states and the Federal Capital Territory (FCT), Abuja. Pig production activities are carried out in parts of 30 States of the country either as commercial/backyard intensive farms or free-roaming extensive pig production systems (Fasina et al., 2012). Due to the high demand for live pigs, mobility of these animals is unregulated usually from the North-Central to the Southern coastal parts of the country where farmers and traders can obtain higher prices for their animals.