PS on Cat Beef Allergy

I have checked all the cat food in the supermarket and every single one includes beef! Yes, even those that are called such things as "Tasty Turkey and Giblet Gourmet Delight". So maybe this is why cats, here in NZ at least, are allergic to beef. It seems they have to eat it at every single meal no matter what their loving owners think they are serving up. If you eat one thing every day you are likely to become sensitive to it.

Now I am wondering if this happens in other parts of the world, or if New Zealand is unusual in this respect. We are a primary food producer and have a great many meat works here. Is beef an ingredient in your wet cat foods too?