I just read this today...
A spokesman for the Department of Agriculture, Fisheries & Forestry said Australia required all dry and semi-dried pet food to be either heat-treated or irradiated and Orijen was just one of a number of pet food manufacturers that exported to Australia.
"No other manufacturer has reported any similar issues," he said.
The Sydney cat neurologist who first identified the link between the pet food and the outbreak of illness in the local cat population, Dr Georgina Child, was sceptical of the company's claims.
"There is nothing to suggest any of the cats I have seen are vitamin A deficient … and while all the cats have eaten Orijen, most have also eaten a variety of other foods," she said.
The study quoted by the company was based on the findings of just eight cats and concluded that further research was required to support any link between vitamin A depletion, irradiation and neurological illness, Dr Child said.