Bull

Dam

Bull

Dam

VJ Jocko

NTM 6

Herdbook number: DNK 304605 Birthdate: 18 Jun 2017

Breed Jersey

Sire VJ Lobo

MGS VJ Janko

Proven/Genomic Proven

Beta casein A2A2

Kappa casein BB

Polled Horned

aAa 426351

Recommended for

Fertility Hoof health Organic

Link to NAV Bull Data

NTM guide

Production & Efficiency

Trait Index 80 100 120
Production 95
Milk kg 100
Fat, kg 97
Fat, % 97
Protein kg 96
Protein % 94
Persistency 101
Growth 92
Saved feed 91
Maintenance efficiency 102

NAV proof run date: 03-02-2026 Reliability 99 % Number of daughters: 610

Expected Progeny Difference

Trait Index Bull effect Average
Milk kg, 305 days 100 0.0 7778
Fat kg, 305 days 97 -3.2 463
Fat %, 305 days 97 -0.08 6.0
Protein kg, 305 days 96 -3.4 339
Protein %, 305 days 94 -0.06 4.4

NAV proof run date: 03-02-2026 Reliability 99 % Number of daughters: 610

Health & Reproduction

Trait Index 80 100 120
Daughter fertility 113
Interval from calving to first insemination (cows) 102
Interval from first to last insemination (heifers) 102
Interval from first to last insemination (cows) 116
Number of inseminations (heifers) 99
Number of inseminations (cows) 112
Calving sire 105
Calving maternal 98
Udder health 102
General health 105
Longevity 114
Hoof health 132
Sole Ulcer 132
Sole Hemorrhage 124
Heel Horn Erosion 116
Digital dermatitis + Interdigital Dermatitis 106
Verrucose dermatitis + Interdigital Hyperplasia 116
Double sole + White line separation 147
Cork screw claw 121
Youngstock survival 101

NAV proof run date: 03-02-2026 Reliability 96 % Number of daughters: 500

Trait Index 80 100 120
Milkability 95
Temperament 109

NAV proof run date: 03-02-2026 Reliability 90 % Number of daughters: 332

Trait Index 80 100 120
Frame 98
Stature 104 Short Tall
Body depth 96 Shallow Deep
Chest width 93 Narrow Wide
Rib structure 100 Coarse Angular
Top line 119 Weak Strong
Rump width 101 Narrow pins Wide pins
Rump angle 115 High pins Low pins
Feet & legs 112
Rear legs, side view 98 Straight Sickled
Rear legs, back rear view 107 Toes out Parallel, bow-legged
Foot angle 112 Low Steep
Bone quality 98 Coarse Fine and thin
Hock quality 109 Filled Dry
Udder 113
Fore udder attachment 104 Loose Strong
Rear udder height 101 Low High
Rear udder width 107 Narrow Wide
Udder support 110 Weak Strong
Udder depth 112 Deep High
Udder balance 91 Deep rear udder Deep front udder
Teat length 99 Short Long
Teat thickness 121 Thin Thick
Teat placement (front) 104 Wide Close
Teat placement (back) 112 Wide Close

NAV proof run date: 03-02-2026 Reliability 90 % Number of daughters: 332

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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