The United States grades feeder cattle that have not reached an age of 36 months on three factors: frame size, thickness, and thriftiness. •
Frame size evaluates feeder cattle' height and body length as determined by their skeletal size in relation with their age; frame size affects the animals' mature size and weight gain composition as they are fed into fed cattle. A large framed feeder cattle of a given age, breed, and a given degree of thickness will gain more muscle and bone, and less fat, than a smaller framed animal with the same age, breed, and thickness at a given maturity age. In terms of
United States Department of Agriculture (USDA) grades for cattle carcasses, at a given weight and thickness, large framed cattle (fed from large framed feeder cattle) will have carcasses with higher yield grades, but lower quality grades. If feeder cattle are fed to the same quality grade, Choice ( fat at the twelfth rib) for example, large framed cattle of a given thickness have to be fed to heavier weights than smaller framed cattle of the same thickness. Age and breed modifies the precise sizes that segment this grade. •
Large frame feeder cattle are tall and long-bodied for their age and breed, and steers and heifers of this frame, everything else being constant, are not expected to produce US Choice until they are fed to and , respectively. •
Medium frame feeder cattle are slightly tall and slightly long-bodied for their age and breed, and steers and heifers of this frame, everything else being constant, are not expected to produce US Choice until they are fed to and , respectively. •
Small frame feeder cattle are shorter and not as tall for their age and breed compared to medium frame feeder cattle, and steers and heifers of this frame, everything else being constant, are not expected to produce US Choice until they are fed to 1100 pounds and 1000 pounds, respectively. •
Thickness evaluates feeder cattle' muscle development in relation to skeletal size. Bone structure, muscling, and degree of fatness determines differences in thickness. Thicker cattle have higher ratios of muscle to bone. Thickness affects the animals' yield grade as they are fed into fed cattle, and a thick feeder cattle of a given age, breed, and frame size will produce a higher yield grade carcass, than a less thick animal of the same age, breed, and frame size at a given maturity age. If feeder cattle are fed to the same quality grade, Choice for example, thicker feeder cattle of a given thickness have to be fed to heavier weights than less thick feeder cattle of the same thickness. Age and breed modifies the precise sizes that segment this grade. Thickness are graded
No. 1 to
No. 4. •
No. 1 thickness cattle must be at least moderately thick throughout their bodies, full in the forearm and the gaskin, and showing a rounded appearance through the back and the loin with moderate width between their legs. •
No. 2. thickness cattle must be at least slightly thick throughout their bodies, full in the forearm and the gaskin, and showing a rounded appearance through the back and the loin with a slight width between their legs. •
No. 3 thickness cattle must be at least thin through the forequarter and middle part of the rounds, their forearm and gaskin are thin and their backs and loins have a sunken appearance, and their both front and rear legs are set close together. •
No. 4 thickness cattle include any cattle with even less thickness than the minimum requirements for No. 3 cattle. No. 1 thickness cattle typically show mostly beef breeding, No. 2 thickness cattle typically show high proportions of beef breeding and slight dairy breeding, and so on with lower thickness cattle. •
Thriftiness evaluates feeder cattle' overall health and expected performance in gaining weight to become a fed cattle. There are no strict guidelines as to grading thrift cattle, rather cattle with apparent health problems are graded as
unthrifty and other cattle are categorized as thrifty. The above three factors and their segmented categories combine to form individual grades. For examples, for thrifty cattle, the frame and thickness factors combine to form 12 different grades of thrifty cattle: No. 1; Large Frame, No. 2; Large Frame, No. 3; Large Frame, No. 4; Medium Frame, No. 1; Medium Frame, No. 2; Medium Frame, No. 3; Medium Frame, No. 4; Small Frame, No. 1; Small Frame, No. 2; Small Frame, No. 3; and finally Small Frame, No. 4. ==Cash market factors==