Equine
Umbilical Hernia
By Lauren Lamb
An umbilical hernia is a defect in the horse’s ventral body wall at the location of the umbilicus. The umbilicus is the equivalent of our belly button. The umbilicus is where the umbilical cord attaches to the foal while it is developing in the mare’s uterus. The umbilical cord is made up of a vein, two arteries and the urachus. The umbilical vein and artery carry blood to and from the fetus as it is developing in the uterus. The urachus is a tube that connects to the fetus’ bladder and carries urine from the developing fetus.
Umbilical hernias are seen in foals between the ages of birth and three months of age. The hernia bump seen on the bottom of the abdomen is made up of skin, subcutaneous tissue, peritoneum (lining of the abdomen) and a piece of the gastrointestinal tract.
Questions concerning umbilical hernias frequently asked by owners:
- How does an umbilical hernia develop?
- Are they genetic?
- How can I prevent an umbilical hernia?
Some evidence shows umbilical hernias may have a genetic component; however, the genetic influence is most likely mild. This means breeding a mare and/or stud that had an umbilical hernia when they were foals will not result in an offspring with an umbilical hernia. The flip side of the coin is also true; crossing a mare and stud with no history of umbilical hernias will not result in a foal without an umbilical hernia.
Some have a strong belief that foaling behavior of the mare immediately after delivery can have an influence on whether a foal will develop an umbilical hernia. The natural behavior of a mare following delivery of her foal is to remain lying down until the foal starts to move and becomes more active. This may take several minutes for the foal to become active. Once the foal becomes active, the mare will stand up and break the umbilical cord about one inch from the foal’s navel. When a mare stands prematurely, the risk of an umbilical hernia forming can be increased. The most common reason for a mare to stand prematurely is human intervention. When humans try to rush into the stall to assist the foal or mare, the mare will become nervous and stand up too early.
An umbilical infection can lead to an umbilical hernia. The post foaling care of the umbilicus can influence whether or not a foal will develop an umbilical infection. The umbilicus should be dipped in dilute Nolvasan solution or betadine solution two to three times a day for the first three days of life. An umbilical infection is likely to occur if the umbilicus is not dipped in an antiseptic solution for the first three days after birth.
The size of an umbilical hernia is measured in fingers, aka the number of fingers that will fit in the hernia. A small hernia is less than three fingers in size. A large hernia is anything bigger than three fingers in size. The hernia should not be painful on palpation, nor should there be any heat or swelling around the hernia. When you place your fingers in the hernia, the contents of the hernia should be easily reduced (pushed back into the abdomen). A veterinarian should be contacted as soon as possible if you notice any heat, swelling, pain on palpation or you cannot reduce the hernia. A veterinarian should also be contacted as soon as possible if a horse with an umbilical hernia starts to colic. All these clinical signs are evidence that a portion of the intestine is stuck within the hernia. When the intestine is stuck within the hernia, the blood supply to the intestine can be compromised, which will result in the intestine becoming necrotic—dead. The hernia should be checked daily to ensure none of the previously mentioned clinical signs have developed.
Several treatment options are available for hernias. One conservative treatment option for small hernias (less than three fingers), is to reduce the hernia one to three times a day. By reducing the hernia you allow the hernia ring (defect in the body wall) to heal close. When the foal reaches four months of age, there is little chance that the hernia will heal with conservative therapy. Any foal that is greater than four months of age with an umbilical hernia will need a surgery to repair the hernia.
An umbilical hernia has two surgical repair options—both require general anesthesia and can be performed in a clean stall or a surgery room. A hernia repair performed in a surgery room has lower complication rate following surgery.
The first surgical option is called the closed technique. With the closed technique, the abdominal cavity is not opened, but the skin and subcutaneous tissue are opened. The hernia is repaired by placing large sutures across the abdominal defect. The closed technique decreases the risk of an infection occurring within the abdomen, but it increases the risk that a portion of the intestine is sutured to the body wall. The closed technique is usually used in cases were the surgery is performed in a stall within the barn. In this location, there is higher environmental contamination compared to a surgery room.
The open technique is the second option. With the open technique the abdominal cavity is opened and large sutures are placed across the defect to close the hernia. With the open technique, the risk of the intestine being sutured to the abdominal wall are significantly decreased. The open technique should be performed in a surgery room.
Following surgery, foals are kept on stall rest with no hand walking for two weeks and then turnout in a small paddock or trap for an additional two weeks. After four weeks, foals are allowed to go back to regular turnout and exercise.
Umbilical hernias are abdominal wall defects that are commonly seen in foals. The cause of an umbilical hernia is not completely understood; however, both genetics and husbandry practice can contribute to a horse developing an umbilical hernia. Surgery is not always required to repair umbilical hernias unless the foal is over four months of age. At this age surgery is needed to repair the hernia. Following surgery, foals had a good prognosis.
Equine
Trailer Safety Checklist
By Janis Blackwell
As the season arrives to gear up for participation in your equine event of choice, one thing remains a constant for all horse owners. That constant is our responsibility to insure the safety of our horses by being diligent to maintain the integrity of the trailers in which we haul them. There are a number of things that can be dangerous both inside and outside of your trailer. Whether you traveled all winter long or whether your trailer sat unused or was used very little through the cold weather months, at least once a year your trailer is due a thorough going over. So here we go with a checklist that will help you insure a happy and safe trip for you and your equine partner.
- A sound floor is absolutely imperative. Whether your floor is aluminum, steel or wood, it should be cleaned regularly after use to preserve it. Urine and manure will erode and weaken all types of floors. Even rubber mats will not prevent erosion of your floor. (Maintenance tip: remove mats and wash aluminum floors often to prevent erosion.)
- Especially check wooden floors for rotten boards. Immediately replace questionable flooring before hauling. (Maintenance tip: For wood, remove mats and wash out manure and debris. Coat wooden floor in a cheap motor oil. Allow to sit in hot summer weather until the oil soaks in. Be careful—floor will be slippery until oil cures into the wood. This treatment yearly will preserve a wooden floor for much longer than normal as it repels urine and protects the wood).
- Keep the interior and exterior washed to enable you to check for rusted out places, leaks, etc.
- Have a professional check your brakes at least once yearly to be sure they are operating properly.
- Be sure tires are inflated to the proper air pressure, and check the inside of each tire for hidden unusual wear that could cause a blowout. Replace worn tires before leaving home.
- Wheel bearings must be checked and packed at least once a year. This should be done even if the trailer has been rarely used since the last time the wheel bearings were packed. In fact, trailer maintenance professionals say that sitting stationary and unused is even worse for the bearings. Improper care and maintenance of wheel bearings can cause a wheel to seize up and actually twist off while in use. Use a horse trailer professional for this maintenance task.
- Axles should be checked for bowing. A bent or bowed axle can cause excessive tire wear and damage wheel bearings.
- There should be no more than two inches in height difference from the front of the trailer to the back. More difference than that causes the bulk of weight of the trailer and its contents to ride mostly on the rear axle causing it to bow and wear on both tires and wheel bearings.
- Another critical part of the trailer to keep an eye on are the butt chain or bar and the back door. The butt chain or bar should be firmly attached to the wall and its keeper and should always be latched. The door should have a strong secure latch with a pin to insure it stays latched while in motion.
- Finally, but certainly not of least importance is a thorough check of the trailer hitch including ball and coupling. Keep the ball well greased. Periodically, check to see that the ball is still securely tightened and the latch on the coupling is working properly.
These few critical safety check points can save you money, stress and the wellbeing of your horse. Until next time, happy trails and safe traveling.
This article was originally published in the April 2016 issue of Oklahoma Farm & Ranch.
Equine
Fly Control That Works: What’s Worth Your Money This Summer
By Ann Asher
Every year about this time, it feels like the flies start winning. No matter how clean I keep the pens or how many fly strips I hang, they show up in clouds. Over the past few summers, I’ve tried just about everything—feed-through supplements, predator bugs, DIY traps, and plenty of fly sprays. Some things helped. Some were a waste of money. If you’re battling flies this year, here’s what’s actually worked for me—and what research says can make a real difference on the farm or ranch.
Start with Cleanliness (But Know It’s Not Enough)
The first—and most repeated—advice is to stay ahead of the mess. Manure management is critical, especially around barns, pens, and loafing sheds. Flies lay eggs in fresh manure, and those eggs hatch into larvae in as little as 24 hours during warm weather.
I try to clean high-traffic areas at least every other day, but the truth is, even on the cleanest farms, flies can still be a problem because of moisture, standing water, and nearby neighbors.
Feed-Through Fly Control: A Solid Foundation
One thing that made a noticeable difference for my horses and cattle was starting a feed-through larvicide early in the season. These products add a growth regulator to the feed that passes through the animal and prevents fly larvae from developing in manure.
It’s not an instant fix—you won’t see fewer flies for several weeks—but once it kicks in, you’ll notice fewer new flies being born.
Tip: Feed-through products only work if all animals on the property are eating it consistently. Otherwise, you’re just treating part of the manure, and flies will keep breeding.
Fly Predators: Small, Mighty, and Surprisingly Effective
Last year, I tried fly predators for the first time. These are tiny, non-stinging insects that lay their eggs in fly pupae, stopping the next generation.
I was skeptical (and honestly a little creeped out at first), but I noticed that where I used predators around the barn and dry lots, the fly pressure dropped. Some companies even offer subscription services that send predators timed to your local climate.
Tip: Fly predators don’t kill adult flies—they stop future flies. So you still need to control the adults already buzzing around.
Good Old-Fashioned Fly Traps
In areas like the barn aisle and outdoor runs, nothing beats physical traps.
I like a combination approach:
- Sticky ribbons and strips for indoor areas
- Odor-baited traps placed away from livestock areas to draw flies away
Tip: Hang baited traps a good distance from barns or stalls. Otherwise, you’re luring flies right into your animals’ space.
Fly Sprays: Choose Carefully
Fly sprays are the first thing most of us reach for—and they do help—but they have limits.
For horses, sprays containing pyrethrins, pyrethroids (like permethrin), or natural oils tend to offer the best repellency. Even then, most sprays only last a few hours, especially if animals are sweating heavily.
Tip: Apply before morning turnout and again before evening if possible. Reapplication is important, especially after heavy exercise or rain.
Other Tools That Help
- Fly masks and fly sheets — particularly those with UV protection, to protect sensitive areas like the eyes and ears
- Fans in barns and run-in sheds — flies struggle to land in strong airflow
- Automatic sprayer systems — an investment, but highly effective for larger barns
The bad news? There’s no magic bullet for fly control.
The good news? Combining several methods—manure management, feed-through treatments, predators, traps, and targeted sprays—can actually make summer bearable for you and your livestock.
At the end of the day, I figure if I can cut the fly population by half, I’ve already made life better for my animals—and a lot less miserable for myself.
References:
- Texas A&M AgriLife Extension – Managing Flies on Livestock
- University of Kentucky Entomology – Controlling Flies Around Livestock
- North Carolina State Extension – Livestock Pest Management
- USDA Agricultural Research Service – Fly Management Resources
- Spalding Labs (for info on biological control programs) – Fly Predators Information
Equine
History of the Horseshoe Part 1
If it were not for the horseshoe and wagon wheel, the United States would not have been founded, according to Lee Liles. The owner of the National Museum of Horse Shoeing Tools and Hall of Honor said Oklahoma is the grandest example in the world.
Horseshoe books date back to 400 B.C. In fact, the oldest horseshoe at the museum in Sulphur, Okla., is more than 500 years old from Denmark.
“I don’t like going back much farther than 1860 because we don’t have the documentation to back it up,” Liles explained. “You got a few magazines like the Harper Weekly and the Wallaces’ Report, but you want to verify the facts.”
19th Century Patents
The first patent on a horseshoe manufacturing machine in the United States was issued in 1834 to Henry Burden, a Scottish-born industrial engineer. By 1850, Burden had more than 50 different patents on his machines at Burden Iron Works in Troy, N.Y., Liles added.
This was all before the first horseshoe nail patent, which was issued in 1863 to Daniel Dodge in Keeseville, N.Y. The horseshoe nail is the most difficult nail in history to manufacture, Liles explained.
“It’s got a lot of different tapers to it,” he explained. “The nail needs to be strong and durable enough to drive through a foot, come out, be turned over 180 degrees and clenched down in the horse’s foot.”
The nail industry has changed a lot throughout the years, Liles said. In 1853, the horseshoe nail was made from Swedish Iron, but copper nails have become popular in recent years. The oldest nail company left in the United States was the Capewell Horse Nail Company owned by the Mustad family. The nail company started in 1881, and they recently moved out of the country.
“All of these major shoe companies, tool companies and nail companies were located in the northeast United States,” he explained. “That’s where the population was. There weren’t any companies located down here in the South like Oklahoma or Texas.”
Horseshoeing Literature
Most information on horseshoeing actually came from Germany, Liles explained. German books were first written in 1861 by Leisring and Hardman. In 1882, Lungwitz was added as a co-writer.
“[Leisring, Hardman and Lungwitz] were the main vets at the Royal Veterinary College,” Liles said. “[Hardman] wrote his own first book in 1884 and wrote 24 editions. Nobody else has ever written that many books.”
Liles said books are the greatest assets for education. In 1866, the U.S. Congress adapted the cavalry books would be written on the Dunbar System.
“Alexander Dunbar was a person who our Federal Government paid to teach anatomy to horseshoers back in that era,” Liles explained.
John Kerman, who was running a horse shoeing school at Fort Carlisle, Penn., wrote the book written on the Dunbar System. The first American horseshoe book was written in 1871. In 1902, Kerman came to the shoeing school at Fort Riley, Kan.
“The cavalry has been the main source of horseshoers in this country up to the 1950s,” Liles said. “The Army technical manual, TM-220, has been the most copied horseshoeing book in history.”
In the 1890s, Pennsylvania State recruited Mississippi-native, John Adams as a professor. The university sent Adams to Germany to study under Lungwitz.
“When he came back in about 1896, he and Lungwitz were such good friends that he had permission to write the American edition of the Lungwitz book,” Liles explained. “When he came back, Adams brought an instructor from Germany to Penn State to teach anatomy and horseshoeing to the vet students.”
Even Cornell University and Michigan State University had a protégé of Lungwitz in 1913, Liles said.
William Russell
“We had a great educator in Cincinnati, Ohio, who wrote 15 horseshoeing books from 1879 to 1907,” Liles explained. “His name was William Russell.”
In 1887, the first shoemaking contest was held in Cincinnati, Ohio, where Russell won. “The contest consisted of making 100 shoes on an opry stage in front of 3,000 spectators,” Liles explained.
Russell made 100 horseshoes in two hours and 40 minutes with the help of a team. John Silk, who later became a famous horseshoer, was one of Russell’s competitors.
In the 1890s, many horseshoers, including Russell, created display cases filled with their horseshoes. Many of these display cases are still intact and hanging in the museum. One of the cases was in the World Fair in St. Louis in 1904.
“When it went to the World Fair, they added nails to the case,” he added. A photo of the case at the World Fair was added into one of Russell’s books, and it was one of the last display cases he made. Russell offered all of his collection for sale in the same year.
“He died in 1907,” Liles explained. “He was a sick man, and he was blind when he died.”
Aluminum Horseshoe
Liles also has a case located at the museum built in 1895 had an aluminum horseshoe inside. “That is very rare,” he said. “In that era, they only produced 65 pounds of aluminum per year. Aluminum was a precious metal, and you had to buy it through a jeweler.”
Liles said he does not think the aluminum held up well to wear and tear. William Wedekind received the title, “The World’s Greatest Horseshoer” at the 1892 Chicago World’s Fair. Wedekind even made an aluminum horseshoe in 1883.
“It was so light that it floated on water,” Liles explained. “They can’t duplicate the shoe today to make it float on the water.”
The Right Shoe
Liles said when people come to museum, they are used to dealing with one breed of horse and one discipline with the horse. The type of horseshoe used depends on the breed and the discipline. “In this country, we have roughly 400 different breeds of horses,” Liles said.
Liles said he was a horseshoer, which is a lot different from a cowboy shoer. For instance, a horse that is going to go trail riding or ranching needs a high-quality steel horseshoe.
A show horse will wear aluminum shoes because the aluminum will wear the toe quicker. “It will give him a quicker time to break that shoe in,” he added. “If your shoe isn’t new at the show, he has to get that shoe back to where it feels comfortable.”
Many of the plastic shoes are meant for horses that are on concrete, asphalt or wood. Liles said plastic shoes are commonly used in the circus.
A common misconception is people think the weight of the horseshoe affects a horse in either racing or working. “They think plastic is so much lighter,” he explained. “If that is the case, why don’t you just ride him barefoot?”
To learn more about the history of the horseshoe, visit www.horseshoeingmuseum.com.
This article was originally posted in the July 2016 issue of Oklahoma Farm & Ranch.
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