Livestock weight definitions

Steers Weight
Light (370 - 550 kg)
Medium (551 - 650 kg)
Heavy (over 650 kg)
Heifers Weight
Light (330 - 500 kg)
Medium (501 - 590 kg)
Heavy (over 590)
Young Bulls Weight
Light (370 - 550 kg)
Medium (551 - 650 kg)
Heavy (over 650 kg)
Lambs Weight
Superlight (17 - 25.4 kg)
Light (25.5 - 32 kg)
Standard (32.1 - 39 kg)
Medium (39.1 - 45.5 kg)
Heavy (45.6 - 52 kg)
Others (over 52 kg)

SQQ (Standard Quality Quotation) Average : 25.5 - 45.5kg i.e. Light, standard and medium weight ranges for lamb