Darvi
AI · frozen semen · HGM bulls
Semen station
Semen stations turn recorded Gir sires into portable genetics — with quarantine, evaluation, freezing, and cold-chain discipline.
Frozen AI doses output; Dam milk + pedigree selection focus; LN₂ (−196°C) cold chain; Artificial insemination field tool.
Current Gir sires on this site
Public station fields decoded as a working notebook. Hover a record to open dam-line detail. Sort explores the set without a spreadsheet.
Order by
Rec. 01 · highest dam kg
GR-50149
Gondaliyo · RHR-GR-50149
Dam kg
4423
Fat %
4.5
BV / Star
274 · 5*
Sire on card · Gondaliyo
Sire's dam · 5950 kg
Rec. 02
GR-50148
G-22 · RHR-GR-50148
Dam kg
4291
Fat %
4.36
BV / Star
253.41 · 5*
Sire on card · G-22
Sire's dam · 3600 kg
Rec. 03
GR-50215
Manek · RHR-GR-50215
Dam kg
3836
Fat %
5.3
BV / Star
1*
Sire on card · Manek
Sire's dam · 4132 kg
Rec. 04
GR-50213
Laloo · RHR-GR-50213
Dam kg
3864
Fat %
4.6
BV / Star
1*
Sire on card · Laloo
Sire's dam · 3615.5 kg
Rec. 05
GR-50228
Gopal · RHR-GR-50228
Dam kg
3104
Fat %
4.32
BV / Star
1*
Sire on card · Gopal
Sire's dam · 3800 kg
Pipeline
From elite dam to frozen dose
- 01
Milk recording
Pure Gir females recorded (INAPH) for 305-DMY and composition.
- 02
High-yield dams
Identify dams in the rare high band for nominated mating.
- 03
Nominated AI
Top bulls on elite dams to produce HGM bull calves.
- 04
Calf ID & parentage
Birth ID, verification, and entry into the selection pipeline.
- 05
Quarantine & health
Disease screening; quarantine often ≥60 days before station work.
- 06
Rearing to collection
Training, welfare housing, controlled nutrition for semen quality.
- 07
Collect · evaluate · freeze
Volume, concentration, motility, morphology; process and freeze doses.
- 08
LN₂ dispatch
Batch testing, inventory, cold-chain dispatch to AI networks.
Field meaning vs example (GR-50149 class cards)
Field
- Dam best lact. (kg) — milk merit of the mother; main proxy for young bulls
- Fat % — dam composition on that lactation
- Sire’s dam lact. (kg) — paternal granddam milk depth
- Breeding value — station index when published
- Star rating — directory ranking (e.g. 5* vs 1*)
- Sire daughters yield — progeny proof; often NA until enough daughters milk
- INAPH ID — national animal productivity network identifier
Example values (GR-50149)
- Dam best lactation: 4,423 kg
- Dam fat: 4.5%
- Sire’s dam: 5,950 kg
- Breeding value: 274
- Star: 5*
- Sire daughters yield: often NA on young bulls
- INAPH / tag style: RHR-GR-50149 class IDs — re-verify live station data
Quality lab
Checks that decide straw trust
- 01
Motility
Pre-freeze and post-thaw motility. Thaw technique in the field is part of the quality chain.
- 02
Morphology & concentration
Sperm structure and dose concentration must meet station standards before freezing.
- 03
Hygiene
Microbial control from collection through processing — dirty process voids genetic merit.
- 04
Identity
Correct bull and batch on every straw. Mislabeling is a genetic and legal failure.
- 05
LN₂ inventory
Liquid nitrogen level monitoring and batch inventory under continuous cold chain.
- 06
Field reality
AI success also depends on heat detection, timing, technician skill, and cow nutrition — not only the straw.
Always re-verify live station data
Public bull cards and this site’s research snapshot are starting points. Confirm current availability, health status, and card values with the station before commercial purchase.