Join Date: Aug 2010
Location: Perth, Western Australia
• Horses: 0
Line breeding and in breeding are not the same thing, for what it's worth.
In this case, you should be fine. The ONLY problem with in breeding is a simple genetics one. Say that Horse A is bred to Horse B, and foals Horse C. Horse C has 50% of each parent's genetic material. If Horse A had some recessive gene that caused something bad, for this example lets say "bunky leg syndrome", it has a 50% chance of passing that recessive gene on to Horse C. If Horse C, which has a 50% chance of carrying the Bunky Leg gene, is crossed to Horse A, who carries Bunky Leg but the owners don't realise, the resulting foal, Horse D, has a 50% chance to get a copy of Bunky Leg from Horse A, and a 50% chance of getting a copy from Horse C. Before you panic though, this does not equal a 100% chance to have the Bunky Leg gene. What this does mean, is that there is a 25% chance of having NO Bunky Leg, 50% chance of having one copy of the gene, and 25% chance of having TWO copies of the gene. Having two copies of Bunky Leg Syndrome gene will then cause Horse D to display the Bunky Leg traits.
So as you can see, in breeding like this just gives you a chance of doubling up on hidden recessive genes that the closely related horses might both be carrying. It does NOT give you mutant foals, foals with three heads, or foals that are always sickly.
Mods, grant me the serenity to see the opinions I cannot change, courage to change the ones that should change, and the wisdom to spot the trolls.