The British Government last week said that Findus-branded lasagne and two meals sold by supermarket chain Aldi contained up to 100 per cent horse meat, and products containing horse have subsequently been found in France and Sweden.
In New Zealand, a Ministry of Primary Industries spokeswoman said every year, 300 samples of meat were tested for possible contamination by another species.
The spokeswoman said if a type of meat was specified in products' ingredients, such as beef, it would be misleading "under both food and the fair trading legislation" not to use that meat.
Mr Petersen said New Zealand food regulations were stringent to ensure reputation.
"We have probably the best reputation in the world as far as food safety standards go. We spend a lot of time and effort and money trying to protect that and keep that in place."
New Zealand's only licensed meatworks exporting horse meat for human consumption, Clover Export Ltd, did not return the Herald's request for comment.
Last year, New Zealand exported 392,000kg of horse, ass, mule and hinnie meat, according to Statistics New Zealand. The total export value was $1.8 million.