Can you please explain to me how you could determine if a mare was in oestrus and receptive to a stallion - Identifying strategies that could be used, the advantages of these strategies, and the signs that a mare will display?
Each mare is different depending on life exposure.Some competition type mares who have never seen a stallion will show no outward signs of being "in". Some mares will get fussy or look for other company. Presented to a stallion, most mares will repeatedly lift their tails and urinate. maiden mares sometimes will not do this and must be verified "in" by a vet. The monthly cycle of a horse is approximately 21 days and I have found it best to cover the mare in the last 3days of being "in". Once the mare ovulates you have 12 to 24 hours and then she will be "out" and not receptive to the stallion. Good Luck! Maiden mares take an average of 3 cycles to get pregnant unless your lucky. Start early in the season so you don't run out of time if you are in the south. You really don't want to breed in July as the mares down south are beginning to "cool off' already, due to the heat. Remember, gestation is 340 to 360 days for normal term.
Anywhere from 9 months of age onwards. Most will not be in estrus and fertile at 9 months, but some can be and therefore if they are being kept with a male entire, it is advisable to move them at or before 9 months of age.
Incidentally, males (colts) are the same, so don't fall into the trap of thinking that if she's in with a colt and he's too young to breed and be fertile if he is only 9 months old - he may not be!
I have recently purchased a 10 year old mare, whom I don't think has ever foaled, according to the previous owner. I am intrested in breeding her, but I was told that doing so could completely change her attitude. At present she is very calm and trusting. So right now I am undecided. Also, are there any supplements that she should be on, or anything that can be given to bring her in, if I decide to breed her. }
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