Over 42,000 egg-laying hens at Hung Chang Farm in Changhua County, Taiwan were culled Friday (April 28) after recent tests confirmed that the farm has been supplying eggs with excessive level of dioxin residues.
Dioxins are pollutants produced as a result of human activity such as trash burning and could stay in food chain in fatty tissue of animals.
The contaminated eggs were tested in February and authorities are still investigating the source of contamination.
Short-term exposure of humans to high levels of dioxins may result in skin lesions, such as chloracne and patchy darkening of the skin, and altered liver function. Long-term exposure is linked to impairment of the immune system, the developing nervous system, the endocrine system and reproductive functions.
The Food and Drug Administration initially announced that it had found eggs containing unsafe levels of dioxin from three chicken farms in Changhua. But on Wednesday (April 26), it clarified that only eggs from Hung Chang were contaminated and lifted the ban on supplies from the other two farms.