The Food and Drug Administration yesterday added another 5.2 million cans of Alaska salmon to its massive recall of the product.

The agency announced that the Red Salmon Co. of Naknek, Alaska, is voluntarily recalling its entire 1980 and 1981 production of 7 3/4-ounce cans of salmon, sold under a variety of brand names.

The agency said a defect in the canning process could leave a hole in the can that could lead to the development of toxins that can cause fatal botulism poisoning.

The recalls now total more than 60 million cans. In general, the FDA is advising consumers who have doubts about any 7 3/4-ounce can of Alaska salmon to return it to the place of purchase.

The latest expansion of the recall was prompted by the discovery by the Baltimore Health Department of a defective can at an unidentified Baltimore store, the FDA said.

The latest group of recalled cans can be identified by a two-line code stamped on the top lid. The first line begins with the letter "P" followed by a four-digit number. The lower line has four or five characters beginning with the letters R, P or C, the FDA said.