Watch list of the Rare Breeds Survival Trust Watch list of the Rare Breeds Survival Trust The Watch list of the Rare Breeds Survival Trust is a listing of rare and native United Kingdom breeds of domestic cattle, sheep, pigs, horses, goats and poultry, compiled by the Rare Breeds Survival Trust. Mammalian farm breeds are classified into five levels of endangerment, based on the number of breeding females. The five classes are: Poultry – chickens, ducks, geese and turkeys – are not categorised by degree of numerical rarity; some are classified as "priority breeds". In 2017, the watch-listed cattle breeds were: The other native breeds listed were the
Cryoconservation of animal genetic resources area, making the process of collecting germplasms easier and more efficient. The species and breeds of animals housed should be considered while planning the facility; facilities should be big enough to meet animal welfare standards, yet small enough to reduce human contact and increase ease of handling while reducing stress of the animal. As the process of collecting germplasm may take several days, the animal may become stressed causing a lower quality of genetic material to be obtained. Thus, training the animal to become familiar with the process is key. Holding facilities for animals may also serve as a quarantine.