Do you have some mares that always have the same sex foal?

[pintofoal]

Do you have some mares that always have the same sex foal?

I have several mares that ALWAYS have the same sexed foals

Fantasia: Art Deco blk/w pinto filly, Hall of Fame chestnut filly, Apollon spotty filly, Art Deco black filly, Sempatico blk/white pinto filly, Sempatico 2008 blk/w pinto filly

Celebration: Art Deco blk/w pinto colt, Art Deco black colt, Art Deco chestnut/w chrome colt, Sempatico bay/w colt, Sempatico blk/white colt, Art Deco 2008 bay colt.

Deco's Favorite (I have not had her for all of her foalings) but ALL colts out of 7 foals 2008 bay white pinto colt Sempatico.

All my others have been pretty normal with the odds: pretty much 50/50

Except for my old mare Heaven (who I had to put down this year at 29 :( ) She had 50/50 but what was interesting is that all of her colts where clones of their sires and all pintos, but if I saw chestnut legs coming out of her I knew it was going to be a filly. She never had a pinto filly for me always solid chestnuts! Heaven had 12 foals 6 pinto colts and 6 solid chestnut filles.

I find it fascinating that some of my mares work this way -- do any of you have such mares?

[aspenlucas]

I find it fascinating that some of my mares work this way -- do any of you have such mares?

I have a few mares like that:

Darlin Playgirl 3 bay 1/4 Cleveland Bay Fillies

Concrete Angel 4 bay fillied, 2 1/2 welsh, 2 1/4 Cleveland Bay

One Man's Gamble 4 chestnut pony colts!

Acceptable Risk has had one colt followed by SIX fillies

My other few mares have been almost 50/50. One mare doing filly, colt, filly, colt, filly!

[classicsporthorses]

I have one and actually Liz she is a daughter of State of the Art! Isn't that Ironic. She has had 4 foals ALL are fillies, from three different stallions. We are waiting to see what she gives us this year.

2 years ago she gave us a black and white filly-she is tri colored and my stallion is a blood bay so go figure on that color (sota's color). Man was I surprised, hence her name (Surprise) and the fact she was born premature.

I have other mares who seem to alternate, colt one year, filly the next and so forth.

[Daydream Believer]

I have one who's produced 4 fillies in a row to my stallion and another that's produced 3 in a row to him also. What's interesting is that they are half sisters by the same stallion. Another mare has produced 3 colts and one filly. Some friends of mine have a mare that gave them 10 colts in a row and finally a filly this year!

[Signature]

We have one mare who has had 5 foals and all 5 fillies.

It is definitely true that the stallion determines the sex of the foal via the sperm, so while it's coincidental I don't think the mare can control any part of it :). Very interesting though!!

[Fairview Horse Center]

One of my mares produced 6 colts. She then gave me a filly, and is now back to boys (2 more).

[railmom]

I have an every other year mare. Seven foals in a row, colt, filly, colt, filly, colt, filly, colt. Now that I am breeding her this year for a filly to keep she will probably break her pattern!

[FriesianX]

Technically, the stallion determines the sex - the mare has two Y chromosomes, the stallion has an X and a Y, so the mare gives a Y and the stallion gives whatever he gives. Having said that, I have one mare who gave me her FIRST ever filly. I've gotten two colts out of her, and prior owners have gotten at least 2 or 3 that I know of. I'm tempted to keep the filly just to perpetuate the line - she is a fabulous broodie, and is getting up there in years.

Most of my mares seem to be in roughly the 50/50 pattern, although my first few years breeding, all we got was colts.

Then like Heaven, I have a breeder friend who also has a mare whose foals have consistent characteristics based on whether they are fillies or colts. All the colts are HUGE, maturing to 16.2 or larger (some going over 17 hands), and all the fillies are short, the tallest being 15.3! All with the same sire (and I think she's had at least a dozen foals).

[Simkie]

Technically, the stallion determines the sex - the mare has two Y chromosomes, the stallion has an X and a Y, so the mare gives a Y and the stallion gives whatever he gives.

Females have two X chromosomes. Not Y.

Males have an X and a Y.

The Y chromosome is the male chromosome and contains very few genes--all relating to making the animal male.

[pintofoal]

Well I have a theory :cool:

I think a mares vaginal fluids can and do influence sex of resulting foal, maybe the colt makers or filly only makers have a different PH that is more conducive to the type of sperm that "make it" what do you all think? :confused:

[Sixth Sense]

Although the male does determine the sex of the foal, it is the female that hosts the conditions. Sometimes, the environment is more hospitable to the X sperm and sometimes the Y. Also, I was told by a a few repro vets and others with genetics degrees, that although the Y sperm are faster at getting to the egg, they do not live as long as the X sperm. As a result, if insemination is before the egg is released, the chance of there being a filly is greater since more X sperm than Y will be alive to fertilize.

[Signature]

Interesting about the internal conditions, seems like that definitely could play a factor.

We almost always have fillies because we breed a good ways before ovulation. Then if you notice, many frozen semen babies are colts - bred very close to or after ovulation = faster swimmers reach egg first (male).

I had heard something similar about a certain stallion (Escudo perhaps?) that the chestnut offspring were often very large while the bays/blacks were of a normal size. Very neat!

[clint]

I have one mare who has had four fillies by four different stallions. And not to dispute your theory about pre-insemination being important for fillies, because she seems to grow a follicle and ovulate in a hurry, three of these fillies have been post-ovulation inseminations with fresh semen.

[gortmore]

Seven foals = seven colts for our broodmare

[Home Again Farm]

Rubizza has had 6 foals and all are fillies. Rohanna had a 4 filly streak going and wrecked it this year with a colt. :winkgrin:

[Edgewood]

Diotima has had 4 colts in row by 3 different stallions. Three breedings were cooled semen, 1 frozen.

[Signature]

Perhaps the internal conditions theory would explain post ovulation equalling fillies a bit better - but in any case, nothing is 100%. :) Is it ever? LOL

[Blonde Filly]

Do you have some mares that always have the same sex foal?

I have several mares that ALWAYS have the same sexed foals

Fantasia: Art Deco blk/w pinto filly, Hall of Fame chestnut filly, Apollon spotty filly, Art Deco black filly, Sempatico blk/white pinto filly, Sempatico 2008 blk/w pinto filly

Celebration: Art Deco blk/w pinto colt, Art Deco black colt, Art Deco chestnut/w chrome colt, Sempatico bay/w colt, Sempatico blk/white colt, Art Deco 2008 bay colt.

Deco's Favorite (I have not had her for all of her foalings) but ALL colts out of 7 foals 2008 bay white pinto colt Sempatico.

All my others have been pretty normal with the odds: pretty much 50/50

Except for my old mare Heaven (who I had to put down this year at 29 :( ) She had 50/50 but what was interesting is that all of her colts where clones of their sires and all pintos, but if I saw chestnut legs coming out of her I knew it was going to be a filly. She never had a pinto filly for me always solid chestnuts! Heaven had 12 foals 6 pinto colts and 6 solid chestnut filles.

I find it fascinating that some of my mares work this way -- do any of you have such mares?

I wonder what would happen if you sold the mares who produce nothing but fillies to Kathy at equine-reproductions who said recently she has had 46 colts now in a row!!!!! :eek::eek::eek::eek:

[showjumpers66]

Most of mine are 50/50, although Foxen had 11 foals and 10 of those were fillies.

[rideagoldenpony]

I just sold a mare last year that had had 6 colts for me. I bought her as a yearling, and was so excited about various crosses for a keeper filly. I waited and waited for a filly -- and gave up.... sigh. Sold her in foal -- I'll be mad if she finally has a filly for her new owner!!! :lol:

We had another mare that we had bought as a 9 year old. She had a string of 6 or 7 colts (including some before we bought her), but then went on to have 4 fillies in a row -- then one more colt, before she was retired.

I know of a farm in the UK who has a mare I just ADORE.... and the mare is 14 years old, and has had many foals and only one has been a filly. But on the other hand, out of 26 foals, they had only had TWO fillies born on that farm. They've clearly got some of that same bad juju going that Kathy does!!!! :lol: :lol: :lol:

[Hillside H Ranch]

[QUOTE=Signature;3257807]
We almost always have fillies because we breed a good ways before ovulation. Then if you notice, many frozen semen babies are colts - bred very close to or after ovulation = faster swimmers reach egg first (male).

QUOTE]


This hasn't held true for me! I do mostly frozen semen breedings (always post ovulation) and usually end up with 50/50 colts/fillies.

[Jellybean83]

My mare has had 3 chestnut fillies. She aborted a bay colt in Feb of this year. Necropsy revealed nothing....we think she is just allergic to boy :P

[dressagetraks]

My best broodmare is 100% on colts, for me and previous owner, with different stallions.

I'm trying a different tactic for my 2009 model hopefully coming soon to a uterus near me. I'm going to tell her how well her former colts are doing and how neat it would be to have another to sell, with a couple of nibbles already on a potential 2009 colt.

Then I'll sit back and see if FINALLY I can get a filly from her. First filly I see I keep, to keep her bloodlines in my broodmare band.

[nsm]

My mare Zara [Miz Yenko/Supernatural] is 4 for 4 with colts. One of my other mares has gone girl/boy/girl/boy. However she has been leased out so the fillies were not mine. I get colts, I have had all colts regardless of my mares, except for my one lone filly. This years foal is a colt out of another mare yet.
I can't say anything about my stallion as he tends to throw pretty close to 50-50 on colts and fillies. But I am happy whatever I get, although another filly would be nice....

Nancy

[LaurieB]

We bought a filly last year whose dam has produced nine fillies and one colt. The interesting thing is that the dam's dam produced eleven colts and one filly.

[Rocky XVI]

Our Voltaire mare produced colt #4 this year!

[risingstarfarm]

Actually there are a lot of data on sex selection - most of it has to do with timing of insemination.

Insemination closer to ovulation produces male offspring more often than female offspring, with females being the predominant outcome when insemination occurs outside the ideal ovulatory window (at least in the human and primate literature).

There are lots of factors that have been proposed as causal - pH is definitely one explanation!

This would suggest that colts would be the most common outcome from using frozen semen - does anyone have supporting or dissenting data?

[Sassenach]

We have old one old mare in Ireland - took a look at her breeding records - recorded in her passport and tallied them up with ours:

14 foals
11 fillies
The last 5 in a row have been fillies. :) Her last foal is our 'keeper' filly. She ain't going anywhere! Though I wish we had retained at least one of the 4 fillies she produced with our last stallion :( He died suddenly and we tried to track them down - the owners wouldn't sell for anything.

[BelladonnaLily]

My old mare Scarlett had 5 fillies 0 colts.

Tracey has had 2 colts so far, no fillies.

Belle had 3 fillies 0 colts.

Not really enough to know, but interesting. In my VERY limited experience, my mares either have one or the other :lol:

[poltroon]

I wonder what would happen if you sold the mares who produce nothing but fillies to Kathy at equine-reproductions who said recently she has had 46 colts now in a row!!!!! :eek::eek::eek::eek:

It would be like tying buttered toast to the back of a cat ... :D

[faluut42]

my mare has had 4 fillies and 1 colt.

but my friends mare has had 5 colts. all from LC. this will be the first year using fresh shipped semen.

[amdfarm]

I'm always complaining to my stallion, because in the five years he's been breeding, I've only gotten one crossbred filly out of my own mares, yet he's produced two with outside mares (one LC and one test tube after ovulation.) And that filly came last year. No babies this year for me. :(

My oldest mare (early teens) has had four foals and they have all been BOYS!! First when I didn't have her and the last three by my stallion, all LC. She's a pinto and her first w/ me and first for my stallion is also pinto. Solids ever since.

So you can tell most of mine have been boys!!