Development of the Gromark began in 1965 in northern NSW, Australia.
The Gromark is fixed at approximately 50 percent Corriedale and 50 percent 50 percent Border Leicester. It is 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.
The Australian Gromark Breed Society was formed in 1979 and has established rules
expressing a strong commitment to recording of performance.
The Gromark is a large-framed breed (ewes average 80 kg/175 lbs) producing large lean
lambs and good fleeces with wool fiber diameter being about 80 microns.
Handbook of Australian Livestock, Australian Meat & Livestock Corporations, 1989,