Southdown sheep reach the grapes on the vines. Baby Doll breeders claim that their sheep are closer to the original English Southdown than are the commercial Southdown sheep being grown today. Mature weights for rams range from 190 to 230 lb (86-104 kg); ewes weigh from 130 to 180 lb (59-81 kg). From mature ewes, fleece weights are between 5.0 and 8.0 lb ((2.5 - 3.6 kg) with a yield of 40% to 55%. The fleeces are considered medium-wool type with a fiber diameter of 23.5 to 29.0 microns and a numerical count of 54 to 60. The staple length ranges from
Rare breed (agriculture) are catered by the Rare Poultry Society (RPS). The RPS does not look after breeds that count few individuals but have their own breed club. The British Rabbit Council (BRC) notes in its breed standards those rabbit breeds that have been recognized by the affiliated Rare Varieties Rabbit Club, of which there are currently 26 breeds. Major factors causing breeds to become rare are reported to include increased use of exotic breeds, weak policies and institutions in animal genetic resources management, neglect of certain breeds because of a lack of profitability or competitiveness, the intensification of production systems, the effects