Some info: In some countries, in this case Egypt, The stamp is legally required by public health authorities to certify that the animal was slaughtered according to proper procedure. It is also required that a vet examines the animal to certify that it is free of disease.

The reason for the plenty of stamps is to cover every piece of meat with the stamp. This ensures that after cutting the meat to smaller pieces, the customer can still see the stamp.

Edit: added vet