Wild boar, that were killed in East Kerry last month, were free of disease.
The seven feral pigs were running wild in the Mount Eagle area near Cordal.
Six of the seven were euthanised by the National Parks and Wildlife Service while the last surviving creature was killed a number of days later.
The NPWS said the animals posed a serious risk to agriculture, in particular to cows and pigs, as wild boar can carry and spread diseases including blue tongue and African swine flu.
The Department of Agriculture says results show that the seven boars did not have African swine flu.
It says as part of early detection measures for the disease, which can kill up to 100% of animals affected, it carries out surveillance on feral pigs of unknown origin which were removed by the Department of Housing, Local Government and Heritage, and that all test results to date have returned negative results for African swine flu.
The Department of Agriculture urges farmers to remain vigilant for signs of this disease which it says can be spared through illegal feeding of infected pig meat or the movement of infected animals.
