Breeding animals; sometimes used interchangeably with purebred.

(animal science, plant science) Pedigreed or well-bred livestock which is maintained for breeding purposes. A specially selected strain of plants or seeds which are to be used as parents for future generations.

Breeding stock; animals whose role is to be a parent or, in other words, to contribute genes to the next generation.

Seedstock are trees left after clearfelling to provide seed for natural regeneration. Often proponents of clearfelling would overstate the ability of these trees to rectify the damage wrought from the clearfelling operation. Seed "throw" was at best unreliable especially where profound damage had taken place.