A good way to manage a forage pond is to manage it as "hatchery pond" for the production of 1" to 3" fingerlings. This means that the pond is drained and dried annually. Pond design should make it less accessible to wading birds (steep sides and sufficient depth). It's parent stock should be free from observable parasites when stocked each year. IMHO, a salt bath is unnecessary when the parent stock is sourced from the destination pond and the harvested forage isn't clearly infested. If there were a very bad infestation in the forage pond, I think I would err on the side of safety and use them as fertilizer for tomatoes or something like that.

It isn't what we don't know that gives us trouble, it's what we know that ain't so - Will Rogers