Gromark Sheep development began in 1965 in northern New
South Wales, Australia. Gromark are approximately 50 percent Corriedale and 50
percent Border Leicester. They are a dual-purpose sheep which evolved from
objective selection for high growth rate and fertility with final selection
being based on visual criteria: wool quality, frame, and carcass attributes.
Gromark sheep are large-framed (ewes average 80 kg/175 lb)
producing large lean lambs and good fleeces with wool fiber diameter being
about 30 microns.