Bull

VJ Rockit

NTM 24

Herdbook number: DNK 305193 Birthdate: 26 Dec 2021

Breed Jersey

Sire VJ Ribe

MGS VJ Nibali

Proven/Genomic Genomic

Beta casein A2A2

Kappa casein BB

Polled Horned

aAa 516

Recommended for

Health Milk Calving Ease Hoof health

Link to NAV Bull Data

NTM guide

Production & Efficiency

Trait Index 80 100 120
Production 120
Milk kg 105
Fat, kg 118
Fat, % 105
Protein kg 115
Protein % 110
Persistency 85
Growth 107
Carcass conformation score 104
Saved feed 109
Maintenance efficiency 97

NAV proof run date: 03-02-2026 Reliability 89 % Number of daughters: 6

Expected Progeny Difference

Trait Index Bull effect Average
Milk kg, 305 days 105 143.2 7778
Fat kg, 305 days 118 19.0 463
Fat %, 305 days 105 0.13 6.0
Protein kg, 305 days 115 12.8 339
Protein %, 305 days 110 0.09 4.4

NAV proof run date: 03-02-2026 Reliability 89 % Number of daughters: 6

Health & Reproduction

Trait Index 80 100 120
Daughter fertility 99
Interval from calving to first insemination (cows) 99
Interval from first to last insemination (heifers) 117
Interval from first to last insemination (cows) 94
Number of inseminations (heifers) 113
Number of inseminations (cows) 97
Calving sire 109
Calving maternal 103
Udder health 107
General health 102
Longevity 102
Hoof health 116
Sole Ulcer 120
Sole Hemorrhage 108
Heel Horn Erosion 94
Digital dermatitis + Interdigital Dermatitis 106
Verrucose dermatitis + Interdigital Hyperplasia 110
Double sole + White line separation 116
Cork screw claw 93
Youngstock survival 116

NAV proof run date: 03-02-2026 Reliability 74 % Number of daughters: 1

Trait Index 80 100 120
Milkability 104
Temperament 102

NAV proof run date: 03-02-2026 Reliability 54 % Number of daughters: 3

Trait Index 80 100 120
Frame 87
Stature 108 Short Tall
Body depth 96 Shallow Deep
Chest width 97 Narrow Wide
Rib structure 104 Coarse Angular
Top line 99 Weak Strong
Rump width 98 Narrow pins Wide pins
Rump angle 107 High pins Low pins
Feet & legs 89
Rear legs, side view 108 Straight Sickled
Rear legs, back rear view 94 Toes out Parallel, bow-legged
Foot angle 96 Low Steep
Bone quality 93 Coarse Fine and thin
Hock quality 97 Filled Dry
Udder 98
Fore udder attachment 87 Loose Strong
Rear udder height 94 Low High
Rear udder width 97 Narrow Wide
Udder support 90 Weak Strong
Udder depth 97 Deep High
Udder balance 94 Deep rear udder Deep front udder
Teat length 111 Short Long
Teat thickness 115 Thin Thick
Teat placement (front) 92 Wide Close
Teat placement (back) 85 Wide Close

NAV proof run date: 03-02-2026 Reliability 54 % Number of daughters: 3

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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