Milk of Death: The dark side of the nurse mare industry

Written by JANE ALLIN
Chief Research Analyst, Int’l Fund for Horses

They call them “Junk Mares”. Yes “junk” as in debris, trash, worthless and possessing utility but lacking in substance. These are the horses of the nurse mare industry.

The tradition of breeding mares to ordinary studs lacking any significant commercial value to induce lactation has been practiced for many years primarily by, but not limited to, the horse breeding/thoroughbred racing industry. Originally, these mares served to nurture rejected foals or those whose mothers died in childbirth; basically a benevolent thing which over the years has progressively deteriorated into a reprehensible industry as a result of the lucrative quest to breed the ultimate horse with rejection of the masses. Over breeding is now pandemic and has created an exponential rise in a most insidious disease called “horse slaughter”.

Once the mares have foaled, they are leased out to highly profitable breeding farms to act as surrogate mothers to “expensive and promising” foals. You may ask why this is necessary and who is responsible?

First and foremost, “The Jockey Club” and their archaic rules are accountable for these crimes.

“To be eligible for registration, a foal must be the result of a stallion’s Breeding with a broodmare (which is the physical mounting of a broodmare by a stallion with intromission of the penis and ejaculation of semen into the reproductive tract). … A natural gestation must take place in, and delivery must be from, the body of the same broodmare in which the foal was conceived. Without limiting the above, any foal resulting from or produced by the processes of Artificial Insemination, Embryo Transfer or Transplant, Cloning or any other form of genetic manipulation not herein specified, shall not be eligible for registration.” []

In essence, a quality highly valued mare who has produced champion foals in the past is repeatedly bred with equally impressive stallions to maximize profits. Given that the gestation period is 11 months and after giving birth she is in heat 7-10 days later she must be re-bred to ensure she produces another potential champion foal in 11 months. This unremitting cycle pushes the mare to extreme biological limits, clearly equine exploitation at the hands of the negligent thoroughbred industry.

Since the mares can only be impregnated naturally and not by artificial insemination, for example, they must be transported to the farm housing the stallion to be live bred. Due to the value of her foal and insurance purposes the foal cannot travel to the breeding shed with her.

Enter the nurse mare.

Having left her own foal behind, she will now nurse the “privileged” thoroughbred and at the end of her “duty” be re-bred to resume the chronic cycle. Many of these mares are not well cared for and just as the thoroughbred and PMU mares they are relentlessly pushed beyond their natural physical capacity. Effectively “pack mules” of a malignant industry rife with overzealous greed.

Perhaps in the “good old days” of racing prior to the explosion of over breeding this was legitimate and respectful protocol but in today’s frenzy of unregulated breeding and unmitigated overpopulation of horses, it is no longer viable.

Two Foals
Foals, the unwanted byproduct of racing's nurse mare practice, are simply killed by clubbing or other means. Some are starved to death and others are sold to the tanning industry for their hides, also known as “pony skin”. Since it is illegal to send foals under six months to slaughter, they skin them to manufacture high-end leather products.

But wait, what about the nurse foals?

Looking more closely at the situation, one realizes that the real tragedy of this procreative process is not only the fate of the nurse mares but more piteously their foals – the unwanted and forgotten by-products; simply waste for disposal.

Similar to the fate of the foals of the PMU industry, these innocent creatures face an even gloomier destiny. They are more or less taken from their mother immediately at which time the horror begins. Many are simply killed by clubbing or other means, some are starved to death and others are sold to the tanning industry for their hides also known as “pony skin”. Since it is illegal to send foals under six months to slaughter, they skin them to manufacture high-end leather products.

Some are lucky and are rescued by horse advocacy groups but like the PMU industry some eventually make it to the slaughterhouse ultimately ending up on a high-priced foreign menu as a delicacy item. Are you unwittingly carrying a “pony skin” handbag or sitting comfortably on a couch made of “Cordovan” leather – the product of nurse foal hides?

What is really overwhelming to think about is the state of thoroughbred breeding practices in this day and time and what this implies in terms of these by-product foals.

“Based on RMBs (Report of Mares Bred) received through Oct. 13, 2009, The Jockey Club reports that 2,409 stallions covered 45,317 mares in North America during 2009. The annual statistics include the number of mares bred to each stallion and represent approximately 92 percent of the mares that eventually will be reported as bred in 2009. According to historical trends, The Jockey Club expects to receive RMBs representing an additional 4,000 to 5,000 mares bred from the 2009 breeding season.” []

Ok, let’s do the math; 45,317 + 4500 (an average estimate) = 49,817 mares bred in 2009. Looking at the worst case scenario, this means there are about 50,000 mares and 50,000 by-product foals on average per year that the racing industry is accountable for. This is an atrocity in light of their claim to be a reputable and responsible organization.

Well, it is dedicated all right; to the “prominent” thoroughbred owners and breeders and their bulging pocketbooks, certainly not to the welfare and safety of the horse.

So, what can be done to end this poignant, thoughtless multi-million dollar enterprise that prospers on equine exploitation?

  • Eliminating the need for live breeding and allowing artificial insemination would essentially eradicate the necessity of nurse mares. It is highly unlikely this would have an adverse effect on the integrity of the thoroughbred foals.
  • Stop breeding the mares annually. There are surplus race horses as it is and both the mare and her foal would benefit biologically as well as psychologically.
  • Provide the foal with an alternate source of milk, for example a milk replacement formula. Many of us, years ago were raised on formula rather than mother’s milk without disadvantage.
  • Campaign for elected legislators to pass humane laws to financially supporting horse advocacy organizations. Well, we all know how hard that is!
  • Raise public awareness to condemn The Jockey Club and the tactless breeders and owners who promote or at least abide by this antiquated policy.
  • Another option, perhaps controversial to some due to ethical concerns, is to induce non pregnant mares to lactate using hormone treatments in conjunction with a dopamine D2 receptor antagonist sulpiride (used as an anti-psychotic in humans, but its antagonistic effects on dopamine levels encourages milk production in horses).]

Awareness of this industry has in fact increased but this does not stop the rampant over breeding we continue to witness. Although horse racing is not the only contributor to the nurse foal industry they are the major player in this “game” of death. Horses are dying in anguish simply to line the pockets of the wealthy. Will the abuse and neglect ever end?

The most endangered species of all, the innocent.


© Int’l Fund for Horses

24 thoughts on “Milk of Death: The dark side of the nurse mare industry”

  1. There’s a special place in hell for you greedy bastards that are doing this to God’s creatures for the almighty dollar. You will answer one day for your actions.


  2. I’ve been around many Thoroughbred farms in Kentucky and have seen mostly Thoroughbred mares with their foals. I have seen nurse mares here and there. But your story is highly suspect . Not every single foal is on a nurse mare, far from it .


    1. There are many more farms in the country than just in Kentucky. We have spoken with many farms who all deny it, just like you. We hand out our cards to the workers however. They come back to us with quite a different story. Not unusual in any suspect business as egregiously cruel as the horse racing industry. That’s just Thoroughbred. We hear it is much worse in the Quarter Horse industry.


  3. I’m horrified, shocked and saddened.
    I feel ignorant that in my 45+ years of life with horses I never knew this was happening!
    Humans are a disgrace.
    I’ve always hated the race horse industry but now I absolutely despise it and anyone who has anything to do with it…!


  4. In 2005 I purchased a nurse mare foal from Last Chance Corral, in Ohio. He is a Percheron/paint cross. Today he is twelve years old and does very well in dressage. His scores are quite high. He is in training level and doing so well that I nominated him for All Breeds Award, Draft Cross. I would like to tell about his incredible journey from a “throw away” to a successful horse with a career, in a non-fiction narrative. My trainer says he is a “suprize package” and will certainly turn some heads. Looking at him, you would never image he could be so relaxed and through.


    1. What a welcome story. Do you have a picture? Of course you do. The question is would you be willing to share one? Send it to us at horsefund at and we will upload it to your comment.


  5. It’s not only the thoroughbred industry. Dig deep into it, other sport horse industries are responsible too. As I know, broodmares that are bred for high-level show jumping horses or eventing horses are artificially inseminated EVERY YEAR, shortly after giving birth to her foal from last season’s pregnancy, and given little time to recover. People just like criticizing horse racing and not look at other equestrian sports that may share the same faults. I just don’t get it.


    1. You are so right Yasmine, and we appreciate your pointing this out. We do focus too much on the Thoroughbred racing industry, and not on the horse breeding industry as a whole. Thank you.


    2. Please remember that nature intended mares to conceive every year! Under our scientific breeding programs, most breeders only produce one foal from two years of breeding. Nature had a much higher rate of live births to breedings
      A mare who is thin or has a difficult foaling IS often given a year off. And the joy a mare takes in being a mother is about as beautiful as it gets.


  6. Thank you for talking about the dirty side of the nursemare industry. People wanting the wetmares have the idea the foals will be “bought and loved – who doesn’t love a foal” and people buying the foals don’t realize they’re helping to support what almost resembles a puppy-mill setting on some farms. Buyers of these unwanted foals (like PMU foals) may be saving a foal’s life but their money is helping to finance the next year’s unwanted foal crop… and the year after and year after… enabling the cycle to keep going. It’s like “saving” horses from slaughter by buying from a broker who sells to kill — he goes right back to auction to buy more horses to fill up his killer truck AND the good Samaritan’s money is used to finance his cruelty.


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