Bull

VJ Chicago

NTM 21

Herdbook number: DNK 305148 Birthdate: 28 Jun 2021

Breed Jersey

Sire VJ Cozy

MGS VJ Lucifer

Proven/Genomic Proven

Beta casein A2A2

Kappa casein BB

Polled Horned

aAa 462

Recommended for

Robot Solids Calving Ease

Link to NAV Bull Data

NTM guide

Production & Efficiency

Trait Index 80 100 120
Production 117
Milk kg 101
Fat, kg 115
Fat, % 108
Protein kg 112
Protein % 114
Persistency 128
Growth 101
Daily carcass gain 99
Carcass conformation score 102
Saved feed 113
Maintenance efficiency 103

NAV proof run date: 03-02-2026 Reliability 98 % Number of daughters: 296

Expected Progeny Difference

Trait Index Bull effect Average
Milk kg, 305 days 101 28.6 7778
Fat kg, 305 days 115 15.8 463
Fat %, 305 days 108 0.20 6.0
Protein kg, 305 days 112 10.3 339
Protein %, 305 days 114 0.13 4.4

NAV proof run date: 03-02-2026 Reliability 98 % Number of daughters: 296

Health & Reproduction

Trait Index 80 100 120
Daughter fertility 97
Interval from calving to first insemination (cows) 97
Interval from first to last insemination (heifers) 102
Interval from first to last insemination (cows) 97
Number of inseminations (heifers) 99
Number of inseminations (cows) 96
Calving sire 116
Calving maternal 108
Udder health 103
General health 98
Longevity 101
Hoof health 102
Sole Ulcer 92
Sole Hemorrhage 108
Heel Horn Erosion 101
Digital dermatitis + Interdigital Dermatitis 111
Verrucose dermatitis + Interdigital Hyperplasia 112
Double sole + White line separation 105
Cork screw claw 106
Youngstock survival 105

NAV proof run date: 03-02-2026 Reliability 89 % Number of daughters: 193

Trait Index 80 100 120
Milkability 115
Temperament 92

NAV proof run date: 03-02-2026 Reliability 69 % Number of daughters: 81

Trait Index 80 100 120
Frame 101
Stature 91 Short Tall
Body depth 92 Shallow Deep
Chest width 93 Narrow Wide
Rib structure 103 Coarse Angular
Top line 98 Weak Strong
Rump width 94 Narrow pins Wide pins
Rump angle 97 High pins Low pins
Feet & legs 109
Rear legs, side view 101 Straight Sickled
Rear legs, back rear view 115 Toes out Parallel, bow-legged
Foot angle 102 Low Steep
Bone quality 110 Coarse Fine and thin
Hock quality 100 Filled Dry
Udder 102
Fore udder attachment 105 Loose Strong
Rear udder height 105 Low High
Rear udder width 111 Narrow Wide
Udder support 93 Weak Strong
Udder depth 102 Deep High
Udder balance 100 Deep rear udder Deep front udder
Teat length 92 Short Long
Teat thickness 95 Thin Thick
Teat placement (front) 107 Wide Close
Teat placement (back) 98 Wide Close

NAV proof run date: 03-02-2026 Reliability 69 % Number of daughters: 81

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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