HGG Community Forums

Originally posted by Ammit in March 2017 on Forest Server (HJ2)


I decided it would help people a lot to see some real concrete examples of what sort of intact rates you should expect from breeding your horses. I created 50 perfect foundation mares and bred them each 8 times too different studs at different pasture bonus levels. Here are the results.

**All horses used in this test and all foals had all testing done on them including strict breeding advice. You can expect a much larger number of intact foals (near double) for regular breedng advice**


Test 1: Perfect foundation stallion (100% breeding ability) bred to 50 perfect foundation mares (100% breeding ability), zero days in pasture.
Results: 12 intact foals, 38 altered foals. Avg breeding ability 99%, Avg PT 9.65

Test 2: Perfect foundation stallion (100% breeding ability) bred to 50 perfect foundation mares (100% breeding ability), 30+ days in pasture.
Results: 34 intact foals, 16 altered foals. Avg breeding ability 102%, Avg PT 9.91

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Test 3: Exceptionaly perfect foundation stallion (105% breeding ability) bred to 50 perfect foundation mares (100% breeding ability), zero days in pasture.
Results: 3 intact foals, 47 altered foals. Avg breeding ability 103%, Avg PT 9.99

Test 4: Exceptionaly perfect foundation stallion (105% breeding ability) bred to 50 perfect foundation mares (100% breeding ability), 30+ days in pasture.
Results: 20 intact foals, 30 altered foals. Avg breeding ability 105%, Avg PT 10.21


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Test 5: 5% Boosted Exceptionaly perfect foundation stallion (110% breeding ability) bred to 50 perfect foundation mares (100% breeding ability), zero days in pasture.
Results: 5 intact foals, 45 altered foals. Avg breeding ability 104%, Avg PT 10.11

Test 6: 5% Boosted Exceptionaly perfect foundation stallion (110% breeding ability) bred to 50 perfect foundation mares (100% breeding ability), 30+ days in pasture.
Results: 11 intact foals, 39 altered foals. Avg breeding ability 108%, Avg PT 10.39

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Test 7: 5% boosted clone of 5% Boosted Exceptionaly perfect foundation stallion (115% breeding ability) bred to 50 perfect foundation mares (100% breeding ability), zero days in pasture.
Results: 0 intact foals, 50 altered foals. Avg breeding ability 108%, Avg PT 10.48


Test 8: 5% boosted clone of 5% Boosted Exceptionaly perfect foundation stallion (115% breeding ability) bred to 50 perfect foundation mares (100% breeding ability), 30+ days in pasture.
Results: 1 intact foals, 50 altered foals. Avg breeding ability 110%, Avg PT 10.68

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This test gives a great look at what sort of intact rates you can expect given different amounts of uneven ability breeding. All these horses are foundations so are certainly even generation numbers but ever 5% increase in breeding ability is roughly a generations increase in quality.

The perfect foundation stud is even ability with the perfect foundation mares, but the 105% stud is like crossing second gens and foundations, the 110% is like crossing third gens and foundations and the 115% stud is like crossing a 4th gen and foundations.

Mares with a full 30 day pasture bonus produced foals about as good as those sired by a stallion 5% higher, but with a much higher intact rate.

These ratios hold true regardless of how good the horses are. A sire who is 5% better then the mares will always produce a similar ratio of intact foals regardless if the cross is 105% to 100% or 125% to 120%.