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Linear

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Linear

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  1. Linear Ben Krahn Oregon State University Dairy Research Center

  2. Linear Type Evaluation • Frame-15% • Dairy Character-20% • Body Capacity-10% • Feet and Legs-15% • Udder-40% Purebred Dairy Cattle Association

  3. Linear Type Evaluation • 50 point scale • Comparing against ideal • Objective comparison • Breed Classification

  4. Frame 15% • Rump • Stature • Front end • Back • Breed Characteristics

  5. Rump • Width between pins • Slight slope from hips to pins • Thurls wide and centered between pins

  6. Rump Width • 5-Extremely Narrow 2.5” • 25-Intermediate 4.5” • 45-Extremely Wide 6.5”

  7. Rump Angle 5-High Pins 1.5” 25-Slight Slope 1.5” 45-Extreme Sloped 4.5”

  8. Stature • Measured at the point of withers • Height at point of withers and pins should be proportionate • Varies by breed

  9. Stature in Inches by Breed Linear Score

  10. Strength • 5-Extremely Narrow • 25-Intermediate • 45-Extremely Strong and Wide

  11. Dairy Character-20% • 5-Extremely Tight • 25-Intermediate • 45-Extrememly Open

  12. Body Capacity-10% • 5-Extremely Shallow • 25-Intermediate • 45-Extremely Deep

  13. Feet and Legs-15% • Foot angle-Pasterns • Rear legs • Rear view • Side view

  14. Foot Angle • 5-Extremely Low • 25-Intermediate 45 degrees • 45-Extremely Steep

  15. Rear Legs-Rear View • 5-Extreme Hock-In • 25-Slight Hock-In • 45-Tracks Extremely Straight

  16. Rear Legs-Side View • 5-Extremely Posty • 25-Intermediate • 45-Extremely Sickled

  17. Udder-40% • Udder Depth • Front Teat Placement • Rear Udder • Height • Width • Fore Udder • Teat Length • Udder Balance and Texture

  18. Udder Depth • 5-Extremely Deep -2” • 25-Intermediate 2” • 45-Extremely Shallow 6”

  19. Front Teat Placement • 5-Extremely Wide • 25-Centrally Placed • 45-Extremely Close

  20. Rear Udder Height • 5-Extremely Low 13.3” • 25-Intermediate 10.5” • 45-Extremely High 8.7”

  21. Rear Udder Width • 5-Extremely Narrow 5” • 25-Intermediate 5.5” • 45-Extremely Wide 7.5” http://www.usjersey.com

  22. Udder Cleft • 5-Extremely Weak flat 1” • 25-Intermediate 1.25” • 45-Extremely Strong 2.5”

  23. Fore Udder • 5-Extremely Loose • 25-Intermediate • 45-Extremely Strong

  24. Teat Length • 5-Extremely Short 1.25” • 25-Intermediate 2.25” • 45-Extremely Long 3.25”

  25. Udder Tilt • 5-Extreme Rearward Tilt 2.5” • 25-Nearly Level • 45-Extreme Forward Tilt 1.5”

  26. References • Purina Mills • http://dairy.purina-mills.com • Holstein Association • http://www.holsteinusa.com • American Jersey Association • http://www.usjersey.com • Hoards Dairyman • http://www.hoards.com • World Holstein Friesian Federation • http://www.whff.info