Breeder (noun)

1. A person or animal that produces offspring.
2. A person who raises and cares for a particular type of animal, especially for the purpose of breeding.
3. A machine that produces or increases the number of something, especially in a controlled environment.

Origin:

From breed + -er.

Examples:

1. The pair of birds proved to be good breeders, raising several successful clutches of chicks.
2. The breeder specializes in raising champion show dogs.
3. The breeder reactors produce more fuel than they consume, making them an attractive source of energy.
4. The breeder has a reputation for producing high-quality, healthy puppies.
5. The breeder is responsible for breeding and raising new generations of the species.