Linear Type Evaluation Frame-15% Dairy Character-20% Linear - PDF document

9/18/2008 Linear Type Evaluation • Frame-15% • Dairy Character-20% Linear • Body Capacity-10% Ben Krahn • Feet and Legs-15% Oregon State University Dairy Research Center • Udder-40% Purebred Dairy Cattle Association Linear Type Evaluation Frame 15% • Rump • 50 point scale • Stature • Comparing against ideal • Front end • Objective comparison • Back • Breed Classification • Breed Characteristics Rump Rump Width • Width between pins • Slight slope from hips to pins • 5-Extremely Narrow 2.5” • Thurls wide and centered between pins • 25-Intermediate 4.5” • 45-Extremely Wide 6.5” 1

9/18/2008 Rump Angle Stature • Measured at the point of withers • Height at point of withers and pins should be proportionate • Varies by breed V i b b d 5-High Pins 1.5” 25-Slight Slope 1.5” 45-Extreme Sloped 4.5” Stature in Inches by Breed Strength Linear Score Breed 45 35 25 15 5 Holstein 59 57 55 53 51 Jersey 53 51 49 47 45 B. Swiss 60 58 56 54 52 • 5-Extremely Narrow Guernsey 59 57 55 53 51 Ayrshire 57 55 53 51 49 • 25-Intermediate Shorthorn 58 56 54 52 50 • 45-Extremely Strong and Wide Dairy Character-20% Body Capacity-10% • 5-Extremely Tight • 5-Extremely Shallow • 25-Intermediate • 25-Intermediate • 45-Extrememly Open • 45-Extremely Deep 2

9/18/2008 Feet and Legs-15% Foot Angle • Foot angle-Pasterns • Rear legs – Rear view – Side view • 5-Extremely Low • 25-Intermediate 45 degrees • 45-Extremely Steep Rear Legs-Rear View Rear Legs-Side View • 5-Extreme Hock-In • 5-Extremely Posty • 25-Slight Hock-In • 25-Intermediate • 45-Tracks Extremely Straight • 45-Extremely Sickled Udder-40% Udder Depth • Udder Depth • Front Teat Placement • Rear Udder – Height – Width • 5-Extremely Deep -2” • Fore Udder • 25-Intermediate 2” • Teat Length • 45-Extremely Shallow 6” • Udder Balance and Texture 3

9/18/2008 Front Teat Placement Rear Udder Height • 5-Extremely Wide • 5-Extremely Low 13.3” • 25-Centrally Placed • 25-Intermediate 10.5” • 45-Extremely Close • 45-Extremely High 8.7” Rear Udder Width Udder Cleft • 5-Extremely Narrow 5” • 5-Extremely Weak flat 1” • 25-Intermediate 5.5” • 25-Intermediate 1.25” • 45-Extremely Wide 7.5” • 45-Extremely Strong 2.5” http://www.usjersey.com Fore Udder Teat Length • 5-Extremely Loose • 5-Extremely Short 1.25” • 25-Intermediate • 25-Intermediate 2.25” • 45-Extremely Strong • 45-Extremely Long 3.25” 4

9/18/2008 Udder Tilt • 5-Extreme Rearward Tilt 2.5” • 25-Nearly Level • 45-Extreme Forward Tilt 1.5” References • Purina Mills – http://dairy.purina-mills.com • Holstein Association – http://www.holsteinusa.com • American Jersey Association American Jersey Association – http://www.usjersey.com • Hoards Dairyman – http://www.hoards.com • World Holstein Friesian Federation – http://www.whff.info 5