The area of the lower basin of the Garigliano and Volturno rivers, including the comuni of Carinola, Mondragone, Minturno, Sessa Aurunca and Teano, was particularly known for production of the breed, which may also be known as the Teanese after the town of Teano.
[3] It is one of the six autochthonous pig breeds recognised by the Ministero delle Politiche Agricole Alimentari e Forestali, the Italian ministry of agriculture and forestry.
As with other indigenous Italian pig breeds, numbers fell sharply in the second part of the twentieth century, and the Casertana came close to extinction.
[3] A herdbook was established in 2001,[5] and is kept by the Associazione Nazionale Allevatori Suini, the Italian national association of pig breeders.
The population remains low: at the end of 2007 it was 594,[3] and conservation status of the breed was listed as "critical" by the FAO.