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Breeding - Autogens vs Homebreds, HRP Bloodlines, and the Lumbosacral - Dec 2012 |
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Autogens vs Homebreds
First, lets take a look at the autogens versus the homebreds for foals created by verified stables.
Auto-Gens – General Averages.
| Winners |
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Stake Winners |
|
Graded Stake Winners |
| 28.28 |
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1.48 |
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0.58 |
Homebreds – General Averages.
| Winners |
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Stake Winners |
|
Graded Stake Winners |
| 38.48 |
|
2.33 |
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0.93 |
The numbers show with breeding it is still possible to increase the general averages of success and is across the board with winners, stakes winners, and graded stakes winners.
HRP Bloodlines
Now lets take a look at the HRP Bloodlines. Below is a table outlining winners, stakes winners, and graded stakes winners for foals coming from both parents with the listed bloodline.
| HRP Bloodline |
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Winners |
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Stake Winners |
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Graded Stake Winners |
| Excellent |
|
41.60 |
|
3.31 |
|
1.28 |
| Very Good |
|
31.17 |
|
1.37 |
|
0.53 |
| Average |
|
22.01 |
|
1.35 |
|
0.59 |
| Below Average |
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26.20 |
|
0.93 |
|
0.27 |
| Poor |
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21.50 |
|
0.80 |
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0.26 |
The table shows that there is a distinct correlation between the bloodlines of the parents and the success of the foal. The table however does include a couple numbers that seem not to be totally in line with the others. This likely points to the fact that the bloodline alone is not the only factor in determining the success of a foal. Considerations like the parents being a good match together, the owner handling the foal properly, and many other potential factors could contribute to that.
Lumbosacral - Does it matter?
Let's take a look at the different lumbosacral ratings and see if there is any correlation between it and a horses success on the track. Take a look at the chart below.
| Lumbosacral Rating |
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Winners |
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Stake Winners |
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Graded Stake Winners |
| Ideal |
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54.90 |
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6.84 |
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3.12 |
| Very Good |
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47.23 |
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3.58 |
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1.49 |
| Good |
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30.48 |
|
1.12 |
|
0.38 |
| Average |
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20.41 |
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0.46 |
|
0.14 |
| Poor |
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16.47 |
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0.25 |
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0.00 |
The table shows there is a very strong correlation to the lumbosacral and the potential success of a horse. The better the lumbosacral rating the better the chance the horse will have of gaining success on the track.
Lumbosacral Conformation - Can it be passed on?
Lets take a look at 3 different charts below.
| Sire Rating |
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Foal Ideal |
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Foal Very Good |
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Foal Good |
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Foal Average |
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Foal Poor |
| Ideal |
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7.6 |
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36.9 |
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38.5 |
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15.2 |
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1.9 |
| Very Good |
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5.9 |
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33.8 |
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40.9 |
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17.3 |
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2.1 |
| Good |
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4.3 |
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28.2 |
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42.3 |
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22.6 |
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2.6 |
| Average |
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3.5 |
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25.6 |
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42.9 |
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24.7 |
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3.3 |
| Poor |
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3.1 |
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20.7 |
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43.3 |
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28.7 |
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4.0 |
- Sire with the given lumbosacral rating produces a foal with the lumbosacral rating at the listed rate
| Dam Rating |
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Foal Ideal |
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Foal Very Good |
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Foal Good |
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Foal Average |
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Foal Poor |
| Ideal |
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7.2 |
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37.5 |
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40.2 |
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13.5 |
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1.6 |
| Very Good |
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6.1 |
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34.4 |
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40.2 |
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17.2 |
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2.1 |
| Good |
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4.8 |
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29.4 |
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42.2 |
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21.1 |
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2.4 |
| Average |
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3.8 |
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26.1 |
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42.4 |
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24.7 |
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3.0 |
| Poor |
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2.7 |
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22.7 |
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44.1 |
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26.8 |
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3.6 |
- Dam with the given lumbosacral rating produces a foal with the lumbosacral rating at the listed rate
| Sire & Dam Rating |
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Foal Ideal |
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Foal Very Good |
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Foal Good |
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Foal Average |
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Foal Poor |
| Ideal |
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7.8 |
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43.4 |
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39.0 |
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8.2 |
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1.5 |
| Very Good |
|
7.0 |
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37.2 |
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39.2 |
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14.8 |
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1.7 |
| Good |
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4.0 |
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27.8 |
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42.6 |
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22.9 |
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2.6 |
| Average |
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2.6 |
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23.4 |
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43.4 |
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26.9 |
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3.8 |
| Poor |
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2.8 |
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8.3 |
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52.8 |
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27.8 |
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5.6 |
- Sire and Dam both with the given lumbosacral rating produce a foal with the lumbosacral rating at the listed rate
Looking at each of the three tables shows there is a correlation between the parents lumbosacral rating and the resultant lumbosacral rating of the offspring. The individual sire and the individual dam are very similar, so it does not appear that one is necessarily better at passing on the lumbosacral rating than the other. Breeding a sire and dam with the same rating appears to increase the chances the offspring will be of the same lumbosacral rating but at a somewhat marginal rate.
It would tend to support the idea that there is more to breeding than just taking a random sire and dam with the same rating and matching them together. You can't just randomly take two ideally rated lumbosacrals and breed them together and expect to significantly increase your chances of success. There is more to it than that. Each horse contains many genes and when breeding you are taking those genes from two different horses and combining them together. All of those genes have to lineup properly.
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