Live Animal Evaluation Beef

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Presentation transcript:

Live Animal Evaluation Beef

Fat Indicators Tailhead & Pins Last Ribs Fore flank Rear flank & Cod Brisket

Steer 1

Steer 2

Comparison Steer 1 - Choice Steer 2 - Standard

Market Beef Muscle Indicators Loin Quarter/ Rump Forearm Stifle

Live Cattle Evaluation Live Weight Dressing Percentage 12th rib fat Rib Eye Area Kidney, Pelvic, Heart fat (KPH) Breed Influence Quality Grade Yield Grade

Weight Live or Carcass Live Weight range Carcass Weight range 900 lb to 1500 lb Avg: 1250 lb Carcass Weight range 550 lb to 950 lb 775 lb

Dressing Percentage Proportion of live weight that ends up as carcass Example: 1250 lb steer with a 775 lb carcass has a dressing percent of 62% Range: 55 - 67% Avg: 62%

Factors Affecting Dressing % Gut Fill Gut fill = Body Weight = Dressing % Hide weight and/or mud Hide wt = Dressing % Muscle Muscle = Dressing % Fat Fat = Dressing % Dairy influence

12th Rib Fat Highly correlated to retail yield Predictor of total carcass fatness Range: .15 in. to .80 in. Avg: .40 .25 in. considered minimum

Rib Eye Area Highly correlated with lean yield Predictor of total carcass muscle Dependant of carcass weight Range: 9.0 - 18.0 sq. in. Avg: 12.5 sq. in. for 1150 lb steer Rule of thumb: 1.1 sq. in. for 100 lb live wt

KPH Internal fat as a percentage of carcass weight Continental cattle will tend to have less than British cattle Range: 1.0 - 4.5% Avg: 2.5%

Breed Influence The use of genetic data has helped increase the animals ability to grade, however not all breeds grade equally. English Breeds: most consistent Continental: tend to lack marbling, bad attitudes stress out marbling Brahman: thicker hide; tend to be low marbling, decreased dressing % Dairy: tend to be lean, but marble well

Quality Grade Assigned according to amount of marbling and bone maturity Most influential component of pricing Range: Standard to Prime Avg: Low Choice

USDA Quality Grades

Factors Affecting Quality Grade Genetics Age of cattle Time on feed Energy content of diet Fat cover Continental/ Brahman influence

Yield Grade Calculated to predict yield of boneless, closely trimmed, retail cuts from the round, loin, rib and chuck (BCTRC) Based on 4 estimations 12th rib fat Hot carcass weight (HCW) Rib eye area (REA) Kidney, pelvic, heart fat (KPH)

Yield Grade Range: 1 through 5 Avg: 3.0 1 = Lean and/or Muscular; High cutability 5 = Fat and/or Light Muscled; Low cutability Avg: 3.0

Market Steers Front

Market Steers Side

Market Steers Rear

Official Placing Class 1: Angus SteersCuts: 2-3-2