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COPD and Breeding

Equine-Reproduction.com Bulletin Board » General Mare Questions - Volume 2 » COPD and Breeding « Previous Next »


Author Message
 

tara malcolm
Neonate
Username: Dancewithmedixie

Post Number: 1
Registered: 12-2008
Posted on Monday, December 15, 2008 - 10:53 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I have a 15yr old mare "Dixie" whom I found out on Friday that has COPD or heaves. Right now she is having trouble getting the oxygen out of her lungs, has mucus in her nostrils and is coughing. We started her on 5cc a day of Ventipulmin and will be taking her completely off hay as soon as we can. I was thinking of breeding her when she starts feeling better but I want to know what the risks are to her. I don't want to hurt her at all so if its dangerous to breed her since she has COPD I won't. Help is appreciated.

Also my vet did say that after we have it under control I could possibly breed, but he did not tell me what the risks were, thats why I am asking this. I understand that I can't have her on Ventipulmin when she is near foaling.

I also want to know what the chances are of it being passed on to the foal.

Further information: she has had 9 foals, last one foaled in 2006. I am currently trying to located her oldest foals to see if they have any issues with COPD. I do not know how long she has had COPD as I just purchased her in February and the previous owners did not mention anything about it.
 

Michele
Breeding Stock
Username: Mich

Post Number: 114
Registered: 02-2006
Posted on Monday, December 15, 2008 - 12:10 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

From the research I did a while ago about this it would seem that COPD, some forms at least, are hereditary. Personally, I wouldn't breed a horse with a problem like this even if there was only a slim chance of the problem being genetic. Also, horse pregnancy and everything it involves is so fraught with problems and uncertainties at the best of times it doesn't make sense to add to it with the very real trauma of heaves and everything associated with it:-(
 

Jos
Board Administrator
Username: Admin

Post Number: 2238
Registered: 10-1999
Posted on Monday, December 15, 2008 - 12:36 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Here are a couple of points for your consideration:
  • The use of Ventipulmin (clenbuterol) has a negative impact on uterine contractility, so at the time of breeding you should be conscious of that, and be prepared to treat her for delayed uterine clearance. That would be an issue to consider anyway with a mare that has already had 9 foals, but is likely to be exacerbated by the Ventipulmin.
  • There may be a negative impact related to the use of uterine contractility and foaling, although this seems to be a lesser issue than at the time of breeding.
  • Interestingly, some mares with COPD seem to improve during pregnancy. That is not however universal, so obviously there is the risk that she does not respond positively, and the weigh and stress of the pregnancy becomes a negative factor. All you can do in that respect is try it and see.
 

tara malcolm
Neonate
Username: Dancewithmedixie

Post Number: 2
Registered: 12-2008
Posted on Wednesday, December 17, 2008 - 01:38 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Have you or anyone you know bred a horse with COPD? Here is a response that I got from another site and I wanted to know how accurate this was?

The risks affect both your mare, and the foal. The impingement on the diaphragm as the foal develops will affect your mare's breathing capability. In COPD, the air is trapped in the alveoli, where the exchange of oxygen and carbon dioxide occurs. The alveoli become distended with waste gas (carbon dioxide), as it can't be forced out of the alveoli. As the disease progresses, alveoli collapse and the total lung capacity is reduced. Gas exchange is impaired, and carbon dioxide levels build in the blood, and oxygen levels are reduced. Eventually, the body remains in a constant state of mild acidosis, since the carbon dioxide converts to carbonic acid. The developing foal might be deprived of adequate oxygen required to sustain normal development. The risks are related to the stage of the disease, and the effectiveness of treatment.
Also, in advanced cases, the impaired blood flow through the lungs can lead to congestive heart failure. In pregnancy the blood volume is increased, and the workload on the heart is increased accordingly. Therefore, a pregnancy could bring on this secondary complication of COPD.
In my opinion, unless there is very good reason to breed your mare, it would be better not to.
 

tara malcolm
Neonate
Username: Dancewithmedixie

Post Number: 3
Registered: 12-2008
Posted on Wednesday, December 17, 2008 - 05:22 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Thank you to you both for your input. I have contacted the head of the Reproduction Department at the University of Florida Large Animal Veterinary Clinic and spoke to them about everything.

I will not be breeding Dixie as I do not want there to be any chance of something happening to her.
 

Dorthy Brown
Breeding Stock
Username: Dodib

Post Number: 321
Registered: 04-2006
Posted on Thursday, February 19, 2009 - 02:13 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

My mare that is currently about 10 months pregnant and had a foal in 2007 has COPD. She improves almost 100% while pregnant. No heaves attacks at all. My vet said its due to some of the hormones--that act like steroids
She has had no issues with being pregnant/foaling or caring for the foal. After she had the foal in 2007 she had a bad attack about a month later which needed the vet out but had no issues while in foal
 

Jan Owen
Senior Stallion or Mare
Username: 1frosty1

Post Number: 2133
Registered: 04-2006
Posted on Thursday, February 19, 2009 - 02:19 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Hi Dorthy! So nice to see you on here! How is your mare doing? Is she getting big? As big as last time :-) Please post pics if you can. Any news on Lily from her new owners? Again nice to see you posting.
 

Linda Bauer --Rebel due 4/3/09
Breeding Stock
Username: Llazyt

Post Number: 191
Registered: 04-2007
Posted on Thursday, February 19, 2009 - 06:51 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Hi Tara, I have a mare that if she eats hay, even soaked in water, gets very heavey. She is in foal right now, (10 months). She does great if she is off hay, but that is not always posible. I have done lots of research and I am now giving her Spirulina. She has been on it for a little over a month now. http://www.springtimeinc.com/product/112/1?r=stspirulina
I am even feeding her hay without problems.
 

Dorthy Brown
Breeding Stock
Username: Dodib

Post Number: 322
Registered: 04-2006
Posted on Friday, February 20, 2009 - 11:32 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Hi Jan
I know I haven't been on here much. She is getting big but no not near the size she was with Lilly--of course Lilly was HUGE at birth. I haven't heard from her new owners in a few months. I will e-mail them soon for some new pics hopefully



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