Southdown sheep

The Southdown is a small, dual-purpose English sheep, raised primarily for meat. The Southdown breed was originally bred by John Ellman of Glynde, near Lewes, East Sussex, about 200 years ago. His work was continued by Jonas Webb of Babraham in Cambridgeshire, who developed the larger animal of today. It was exported to New Zealand and was used in the breeding of the Canterbury lamb.

This sheep was involved with crossbreeding to develop other breeds:

The Southdown in Britain is recognised by the Rare Breeds Survival Trust as a native breed, although today it is popular amongst the smaller scale breeders of sheep.

It has been split into two sub-breeds. The Southdown raised by commercial growers today, is larger than the "traditional" Southdown of years past. North American Southdowns are also taller than their English counterparts. The original blood line of the English Southdowns are the "Baby Doll" Southdowns in the US. They have been selected specifically for their smaller size of the original blood lines and a focus on wool and hobby breeding rather than commercial meat production. In California and New Zealand, they are placed in vineyards to graze weeds because they are too short to reach the grapes on the vines. Baby Doll breeders claim that their sheep are closer to the old, traditional, English Southdown than are the commercial Southdown sheep being grown today.

Mature weights for rams range from 190 lb (86 kg) to 230 lb (104 kg); ewes weigh from 130 lb (59 kg) to 180 lb (81 kg). From mature ewes, fleece weights are between 5 lb (2.25 kg) and 8 lb (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 1.5 inches (4 cm) to 2.5 inches (6 cm).

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Wikipedia