Bull

VJ Cozy

NTM 17

Herdbook number: DNK 304867 Birthdate: 24 Apr 2019

Breed Jersey

Sire VJ Choko

MGS VJ Haley

Proven/Genomic Proven

Beta casein A2A2

Kappa casein BB

Polled Horned

aAa 243

Recommended for

Milk Calving Ease Hoof health

Link to NAV Bull Data

NTM guide

Production & Efficiency

Trait Index 80 100 120
Production 113
Milk kg 113
Fat, kg 110
Fat, % 93
Protein kg 116
Protein % 95
Persistency 109
Growth 100
Saved feed 119
Maintenance efficiency 104

NAV proof run date: 03-02-2026 Reliability 99 % Number of daughters: 1469

Expected Progeny Difference

Trait Index Bull effect Average
Milk kg, 305 days 113 372.4 7778
Fat kg, 305 days 110 10.5 463
Fat %, 305 days 93 -0.18 6.0
Protein kg, 305 days 116 13.7 339
Protein %, 305 days 95 -0.05 4.4

NAV proof run date: 03-02-2026 Reliability 99 % Number of daughters: 1469

Health & Reproduction

Trait Index 80 100 120
Daughter fertility 82
Interval from calving to first insemination (cows) 80
Interval from first to last insemination (heifers) 97
Interval from first to last insemination (cows) 79
Number of inseminations (heifers) 100
Number of inseminations (cows) 88
Calving sire 107
Calving maternal 106
Udder health 104
General health 94
Longevity 94
Hoof health 128
Sole Ulcer 128
Sole Hemorrhage 131
Heel Horn Erosion 108
Digital dermatitis + Interdigital Dermatitis 104
Verrucose dermatitis + Interdigital Hyperplasia 116
Double sole + White line separation 142
Cork screw claw 125
Youngstock survival 125

NAV proof run date: 03-02-2026 Reliability 97 % Number of daughters: 1140

Trait Index 80 100 120
Milkability 100
Temperament 95

NAV proof run date: 03-02-2026 Reliability 92 % Number of daughters: 699

Trait Index 80 100 120
Frame 95
Stature 111 Short Tall
Body depth 91 Shallow Deep
Chest width 85 Narrow Wide
Rib structure 118 Coarse Angular
Top line 102 Weak Strong
Rump width 107 Narrow pins Wide pins
Rump angle 94 High pins Low pins
Feet & legs 111
Rear legs, side view 104 Straight Sickled
Rear legs, back rear view 99 Toes out Parallel, bow-legged
Foot angle 109 Low Steep
Bone quality 113 Coarse Fine and thin
Hock quality 113 Filled Dry
Udder 106
Fore udder attachment 97 Loose Strong
Rear udder height 111 Low High
Rear udder width 110 Narrow Wide
Udder support 107 Weak Strong
Udder depth 108 Deep High
Udder balance 92 Deep rear udder Deep front udder
Teat length 100 Short Long
Teat thickness 106 Thin Thick
Teat placement (front) 111 Wide Close
Teat placement (back) 111 Wide Close

NAV proof run date: 03-02-2026 Reliability 92 % Number of daughters: 699

Name Scientific name Symptoms Code Result
JH1 Jersey Haplotype 1 (JH1F = Not carrier, JH1C = Single carrier, JH1S = Double carrier) JH1 is an autosomal Read more (JH1F = Not carrier, JH1C = Single carrier, JH1S = Double carrier) JH1 is an autosomal recessively inherited defect. The disorder was identified in the North American and the Nordic Jersey populations, however the frequency was somewhat lower in the Nordic population. JH1 primarily causes early embryonic death (spontaneous abortion), within the first 60 days of gestation. The key ancestor is believed to be Observer Chocolate Soldier (US 596832). https://omia.org/OMIA001697/9913/ JH1F Free

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