Olcastletown Tiernan

Grazing Specialist

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  • Full Name: Olcastletown Tiernan
  • Sire Stack: Sebastain x Dano x Oman
  • HBN: HOLIRLM218577571984
  • AI Code: HO6640
  • Kappa Casein: -
  • Beta Casein: -

Production summary

  • Date Nov 2025
  • Source ICBF
  • Prod Dtrs 1683
  • Prod Herds 572
  • EBI 160
  • EBI Rel 95
  • Milk S.I. 92
  • Milk S.I. Rel 99
  • Milk kgs 101
  • Fat kgs 14.7
  • Fat % 0.18
  • Protein kgs 10.4
  • Protein % 0.12

Calving summary

  • Calving S.I. 8
  • Calving S.I. Rel 99
  • Direct calving ease 7.65
  • Maternal calving ease 4.63
  • Gestation length -2.27
  • Calf mortality -0.26

Fertility summary

  • Fertility S.I. 46
  • Fertility S.I. Rel 90
  • Calving interval -2.25
  • Survival 1.35

Maintenance

  • Maintenance S.I. -10
  • Maintenance S.I. Rel 96
  • Stature 0.27
  • Condition score 0.64

Management

  • Management S.I. -10
  • Management S.I. Rel 72
  • Milking speed 20.74
  • Temperament -0.05

Pedigree

  • DAM Olcastletown Yvonne Ronaldo EX91
  • 2ND DAM Olcastletown Ronaldo GP82

Carbon summary

  • Carbon S.I. -10
  • Carbon S.I. Rel 96

Beef summary

  • Beef S.I. 38
  • Beef S.I. Rel 98

Health summary

  • Health S.I. 6
  • Health S.I. Rel 89
  • Lameness 0.01
  • Mastitis 0.02
  • SCC -0.09

UK figures

  • Milk kgs 64
  • Fat kgs 12.7
  • Protein kgs 10.4
  • Fat % 0.20
  • Protein % 0.16
  • Lifespan 52
  • SCC -1
  • Mastitis 1
  • Fertility index 6.4
  • SCI 222
  • ACI 250
  • ACI/SCI Rel % CONV

Proof run: UK Data: AHDB 25/12
Cogent abide by the AHDB Dairy and Holstein UK established Code of Advertising.
UK information supplied by AHDB.

Haplotypes & Recessives:

Bulls tested free for genetic recessives will not show these codes for formatting reasons