Formal Definition: A hatchery program is an Integrated Type if the intent is for the natural environment to drive the adaptation and fitness of a composite population of fish that spawns both in a hatchery and in the wild.
Integrated simply means that co-mingling of hatch and wild is encouraged. Anything not managed for segregation is by definition integrated.
That the natural environment would drive the adaptation/fitness of the co-mingled population is a function of PNI... specifically managing for a PNI above 0.5 or greater.
Many integrated programs are run with dismal PNI's.... essentially allowing the hatchery environment to dominate the genetic fitness of the co-mingled population.
This is at the heart of the Willapa reform... broodstock management and limiting pHOS to bring hatchery operations up to HSRG standards.
"Let every angler who loves to fish think what it would mean to him to find the fish were gone." (Zane Grey)
"If you don't kill them, they will spawn." (Carcassman)