Heritability Estimates Used for Genetic Evaluation in Canada
- March 30, 2021
Production Trait | HO | AY | JE | BS | GU | CN | MS |
Milk Yield | 28 | 32 | 33 | 28 | 31 | 31 | 31 |
Fat Yield | 26 | 26 | 27 | 22 | 25 | 25 | 25 |
Protein Yield | 26 | 29 | 29 | 25 | 28 | 28 | 28 |
Fat Percentage | Not Directly Used – Literature estimate is ~50% | ||||||
Protein Percentage | Not Directly Used – Literature estimate is ~50% |
Functional Traits | HO | AY | JE | BS | GU | CN | MS |
Feed Efficiency | 5 | Not evaluated | |||||
Herd Life | 10 | ||||||
Mastitis Resistance | 12 | 12 | 12 | Not evaluated | |||
Metabolic Disease Resistance | 7 | 7 | 7 | Not evaluated | |||
Hoof Health | 9 | Not evaluated | |||||
Lactation Persistency | 20 | 23 | 21 | 17 | 21 | 21 | 21 |
Somatic Cell Score | 18 | 16 | 18 | 19 | 18 | 18 | 18 |
Daughter Fertility | 4 | 7 | 3 | 4 | |||
Milking Speed | 14 | ||||||
Milking Temperament | 13 | ||||||
Calving Ability | 3 | 4 | 2 | 3 | |||
Daughter Calving Ability | 7 | 6 | 9 | 7 | |||
Body Condition Score | 21 | 17 | 17 | 18 |
Major Type Trait | HO | AY | JE | BS | GU | CN | MS |
Conformation (Final Score) | 20 | 22 | 18 | 20 | |||
Mammary System | 24 | 18 | 18 | 18 | |||
Feed & Legs | 13 | 18 | 10 | 14 | |||
Dairy Strength | 23 | 28 | 17 | 23 | |||
Rump | 26 | 15 | 13 | 14 |
Descriptive Type Trait |
HO |
AY |
JE |
SB |
GU |
CN |
SL |
Udder Floor | 21 | 18 | 13 | 15 | |||
Udder Depth | 44 | 36 | 42 | 39 | |||
Udder Texture | 12 | 16 | 11 | 13 | |||
Median Suspensory | 17 | 19 | 17 | 18 | |||
Fore Attachment | 27 | 24 | 25 | 24 | |||
Fore Teat Placement | 27 | 24 | 24 | 24 | |||
Rear Attachment Height | 25 | 25 | 24 | 24 | |||
Rear Attachment Width | 18 | 20 | 19 | 19 | |||
Rear Teat Placement | 29 | 27 | 28 | 27 | |||
Teat Length | 32 | 31 | 25 | 28 | |||
Foot Angle | 7 | 7 | 8 | 8 | |||
Heel Depth | 8 | 9 | 7 | 8 | |||
Bone Quality | 26 | 34 | 18 | 26 | |||
Rear Legs Side View | 20 | 19 | 14 | 17 | |||
Rear Legs Rear View | 11 | 16 | 9 | 12 | |||
Front Leg View | 11 | 7 | 10 | 8 | |||
Locomotion | 5 | 8 | ‐ | 5 | |||
Stature | 46 | 47 | 30 | 39 | |||
Height at Front End | 23 | 17 | 18 | 18 | |||
Chest Width | 20 | 16 | 14 | 15 | |||
Body Depth | 31 | 30 | 25 | 28 | |||
Dairy Capacity | 18 | 18 | 13 | 16 | |||
Loin Strength | 19 | 16 | 18 | 17 | |||
Rump Angle | 41 | 33 | 31 | 32 | |||
Pin Width | 32 | 33 | 19 | 26 | |||
Thurl Placement | 23 | 17 | 15 | 16 |