Blue Duck Farm
Horn Prediction Tool
Modern Texas Longhorn growth predictor for cows & bulls — updated with contemporary elite data
1 Animal Details
2 Prediction Results
Projected Mature Tip-to-Tip
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Age at Measurement
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% of Mature Horn
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Multiplier Factor
Growth Progress
0%
Growth Milestone Projection
| Age | % of Mature | Predicted Horn | Growth Left |
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Note: Cow projections use the v4 curve, based on Arrowhead modern genetics (born 2016+), Oct 2026: medians of percent-of-last-tape for 100 Arrowhead Cattle Company Club 80/90/100 cows. Bull projections remain on the v3 curve (Arrowhead Gallery of Horns — Club 80 / 90 / 100; 100 bulls as of October 2026). Modern genetics keep adding horn later than the 1999 Dalgood / TLJ tables. A 12-month cow is about 35.2% of mature horn; a 12-month bull is about 39.4%. Individual animals can exceed or fall short of the average. Models update weekly as more measurement histories are added.