My stallion sired a set of twins last spring, a black and white colt and a black filly. Will there be any fertility problems with either of these foals?
There is no concern about fertility issues in twin equines. Twins in the horse are almost always as a result of double ovulations (there have only been 3 or 4 cases of identical twins, so one cannot say "always", but it might as well be...!). The condition of "freemartinism" - which is related to reduced fertility - such as is seen in cows is therefore not an issue in the equine.
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