Southdown sheep his associates were searching for the stock to start the new registry, only adult Babydoll sheep, two years and older, were accepted in the flock, so they could be judged against the original conformation standards as verified by a veterinarian. Each sheep's registration application was passed before a board of three members of the soon to be formed Olde English Southdown Registry. After this initial review and acceptance period, the "Foundation Flock" registry was closed in 1991. Subsequently, the process of registering lambs from this newly established foundation flock began. Southdown sheep The Southdown is a small, dual-purpose English sheep,
Breed registry stud book is a stud book or breed registry that does not accept any outside blood. The registered animals and all subsequent offspring trace back to the foundation stock. This ensures that the animal is a purebred member of the breed. In horses, an example of a closed stud book is that of the Thoroughbred, with a stud book tracing to 1791. The American Kennel Club is an example of a kennel club with primarily closed books for dogs; it allows new breeds to develop under its Foundation Stock Service, but such dogs are not eligible for competition in AKC